Find cheap flights from Boston to Denver

BOS - DEN

Find cheap flights from Boston to Denver

Round-trip
Economy
Boston (BOS)
Denver Intl
Fri 10/16
Fri 10/23
Any month
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Good to know

Low season

May Best time to beat the crowds with an average 20% drop in price.

High season

December Most popular time to fly with an average 30% increase in price.

Average price of a round-trip

$268 (avg. price over the last 2 weeks)

Good deal for a round-trip

$247 or less

When to book flights from Boston to Denver

Estimated round-trip price
Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for finding a cheap flight

  • Looking for a cheap flight? 25% of our users found flights on this route for $167 or less.
  • The cheapest flight from Boston to Denver was found 70 days before departure, on average.
  • Book at least 4 weeks before departure in order to get a below-average price.
  • High season is considered to be November, December and January. The cheapest month to fly is May.
  • Morning departure is around 4% more expensive than an evening flight, on average*.
  • Do you want to fly nonstop from Boston to Denver without spending too much money? With low-cost airlines like Frontier, JetBlue, and Spirit Airlines, this is an easy mission to accomplish. Any of these three airlines offer direct and cheap flights from Boston to Denver, so you have more money to spend in Colorado’s capital city.
  • While waiting for your flight from Boston to Denver at Boston Logan International Airport (BOS), let your kids spend their energy at the Kidports of Terminal A, B, or C. Toys and a big airplane are there for fun and entertainment before boarding.
  • Boston Airport features various lounges, some of which also give out entry passes to economy flyers of any airline. The Club is located in Terminal E in the post-security area and economy passengers can purchase 3-hour passes for approximately $40. The Lounge in Terminal C on the first floor, close to Gate C19, also welcomes economy travelers for a fee of $40 per 3h.
  • Denver International Airport (DEN) has an extensive art program that welcomes passengers in style and is also acknowledged as one of the best US airports for art. Permanent and limited exhibitions find their place all around the airport and definitely serve as eye candy for any travelers passing through the corridors and terminal halls.
  • There are two 24-hour eateries at Denver International Airport, in case you arrive late and your stomach is rumbling. Einstein Bros. and Bagels is located in the Center Core of the C Gates and invites with scrumptious bagels and other snacks. If you are at the A Gates and fancy a burger, McDonald’s also has its doors open round the clock.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for booking Boston to Denver flights

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Top 5 airlines serving Boston Logan Intl to Denver Intl

Scores according to KAYAK customer reviews

7.9
Delta
Overall score based on 28,683 reviews
8.1
Boarding
7.8
Comfort
8.5
Crew
7.8
Entertainment
7.5
Food
Airline reviews

Cons: "Not delayed"

Pros: "this is the airline"

Pros: "You know what you are getting with Delta"
Cons: "The economy seats were really tiny, this made the flight fairly uncomfortable"

Pros: "The crew was very friendly. The plane was very quiet (except for noisy crying babies)."
Cons: "Unless you can afford the higher priced "comfort class" or first class seats, the seating is very, very cramped on Delta's 757s. It's a good thing the flight was only 5+ hours (but that's not long enough to get any decent amount of sleep on this flight scheduled as a redeye)."

Cons: "Better allergy aware food."

Pros: "Friendly crew"
Cons: "We reserved exit row seats and when they changed the plane they gave our exit row seats to others."

Pros: "N/a"
Cons: "The crew members were very rude and they called me an IDIOT!! Yes they did because the forced me to check my carry on bag and i didnt want they are racists"

Pros: "I was in Comfort+ so there was a bit more leg room than standard economy"
Cons: "Even with Comfort+ things are tight."

Pros: "room and services"
Cons: "can't think of anything"

Cons: "Better screens for in-flight movies. More legroom or upgrade options."

Pros: "We left early"

Cons: "they let someone get off the plane and it delayed the flight an hour and a half which caused me to miss my connecting flight. I now have to sit for a 5 hour layover"

Pros: "Not much. Boarding by "zone" works ok, but is no quicker than most other boarding methods."
Cons: "Boeing 767-400ER seats had no leg room for 6'+ traveller like me. The entertainment system was so old that there were no 115v outlets or USB ports. On a 7-hour flight, that is a significant problem for travellers today with multiple electronic devices. Finally, we were not told in advance that we had to go through security twice and through US Customs BEFORE leaving Dublin. So, the 6-hour layover at JFK was a complete waste of our time as we did not have to go through Customs there."

Pros: "wonderfu crew... very helpul`"
Cons: ".."

Pros: "The selection of movies was great."
Cons: "The food. No herbal or decaf tea. No decaf coffee. The regular coffee and regular tea was awful; I like strong coffee and tea but on the plane it was terrible. The was not a vegan option for dinner. I thought the pilot announced complimentary beverages; soft drinks, coffee, tea & alcohol. Perhaps I was mistaken or maybe he was. I like the seats (reclining back with the seat bottom moving forward) except the seat bottom is entirely too hard and was bad for my back. The hot towels are a welcome touch. The ride was smooth, the pilots did a very good job."

Pros: "Everything went great. Flight left a little late but was fine and only arrived a little late. I like the side wings on head rests really help."
Cons: "Seats are always hard on long flights."

Cons: "After we boarded and were already sitting in our sits the stewardess came and removed our bags from the overhead compartment for another person with a larger bag! We ended up storing our bags under the sits in-front. The way it was done it was rude and with no consideration for our comfort."

Pros: "Got to London on-time (early, actually) and safely. The in flight meal was okay. The leg room in comfort plus was great, the mobile app was awesome, and the staff (check-in, gate, cabin and flight deck) were professional and friendly all around."
Cons: "The leg room was great, but as a broad-shouldered guy, the width of the seat was miserable. Unfortunately, the Delta 767 doesn't offer any upgrade for a wider seat beyond Delta One, and my employer won't spring for that. Too bad there isn't a premium economy option. Also, the entertainment unit in the seat next to mine malfunctioned, which you wouldn't think would impact me that much except that because it was "seeing" touches randomly throughout the flight, the screen would turn on, off, brighter, dimmer, play random stuff, and just generally be as annoying as possible to everyone nearby throughout an overnight flight."

Pros: "Easy and quick"
Cons: "No complaints"

Pros: "on time, good food, good films enough space to sleep in economy."
Cons: "the stewardess only went up one side of the plane offering eye shades and when i asked for one she seemed really miffed."

Pros: "Great service throughout. Friendly attendants and easy boarding/deboarding processes. Would fly international with them again in a heart beat."

Pros: "First leg from San Diego was excellent."
Cons: "Arriving in SLC discovered out flight to Denver was CANCELLED! Had to reschedule to the next day. Not fun!"

Pros: "We didn’t order food and there was no online entertainment"

Pros: "Delta flights run one time and their fleet seems newer than most with comfortable seating. Having free movies in the seat back ahead of you is a big plus with a good selection of movies. Snacks are good and crew is always friendly and accommodating. We fly almost exclusively with Delta for the aforementioned reasons."
Cons: "Boarding is a hassle no matter the airline with few exceptions. You would think someone could figure and efficient method to get people on the planes. I suppose it could be the public that is the problem. Not a problem with Delta they run a good airline."

Pros: "Nice people. Very helpful."
Cons: "LOST MY BAG IN BOSTON BEFORE EVEN TAKING OFF!!!! Did not make it, and then won't deliver it when it makes it to Kathmandu! This is most distressing."

Pros: "The overall flight was good."

Cons: "Jet airways sucks"

Pros: "The only positive of this leg is that it was less infuriating than the flight from RDU to Boston"
Cons: "Delta's partnership with Go Jet seriously compromises the legacy carrier's reputation. I am a Delta fan - although flexible enough to use other choices when necessary. I will no longer fly a Go Jet operated leg when other choices are available. For my trips to Boston, that means Jet Blue. Sorry Delta. I'll see you back on a true Delta route."

Pros: "WiFi, good flight attendants"
Cons: "Would like to see Direct TV along with Delta Suite so can watch live TV"

Pros: "Great crew and passengers"

Pros: "Entertainment offered, USB charging options."
Cons: "Too much food offered."

Pros: "Within Europe KLM short flights are very good. They give you a snack and something to drink without charge."
Cons: "Seats,are a little tight but like most other airlines."

Pros: "Nothing."
Cons: "Reservation. Checkin. Seating. Flight."

Pros: "It was a really good flight minor turbulence towards the end. Flight was on time, smooth flight. NO tvs on this one."
Cons: "I wish they had more snacks like JetBlue but all was fine. TVs on every plane would be nice."

Cons: "The process of checking was very poor. One line was serving all of the Delta flights. Agents were very slow. Even when they started to serve my flight with priority still no impruvment. The agent who served me was so lost that he could not find the page with my picture and name in my passport!!!"

Pros: "Boarding was efficient and easy. For the first time on any airline, the crew was over-the-top friendly and my special meal request was excellent."

Pros: "It's what I didn't like....as a Sky Miles member I should get a free bag. Small aircraft for a FL trip."

Pros: "I liked nothing, because the flight was 4hrs late and had 20 on standby."
Cons: "4hrs late, 20 on standby, missed connection, had to travel a day later and spent 14hrs in the airport."

Cons: "I'm just glad that we got to the airport 2 1/2 hours early because we needed it. We had to check a dog so we had to go through the special needs line, they had 2 out of 20 of ticket lines open. My wife also needs a wheelchair and after 45 minutes of standing in line, I spoke to one of the idiots that are supposed to be there to help and he went and got a wheelchair which I had to push my wife in the wheelchair through the zig zag line with 2 large suit cases and a dog. It took us an hour and a half to get tickets and then they called for someone to push the wheelchair and we where told to wait for them there. We waited for 10 minutes for someone to come but no one came so I started pushing her towards the Sercurity check line and finally someone came to push her and he stayed on his phone the entire time. When my wife got to the point where she needed to walk through the metal detector she was having a little trouble getting out of the chair so they told her to just stay in the chair and they would push her through in the wheelchair. When she got through, they almost strip searched her and patted her down like she was a criminal. That took another 25 minutes!!! They the guy pushed her to our gate and insisted on taking the chair back with him, so 5 minutes later they asked if it was anyone who needed assistance getting on the plane. I went up and told them that my wife needed a chair to get on the plane so they had to call and get another chair which took another 10 minutes and finally we got on the plane. It took us 2 hours and 15 minutes to get a ticket and go through Sercurity!!!! Very very very unprofessional!!!"

Cons: "Free streaming movies on WiFi did not work (the system was broken on this aircraft according to the customer support). We had 3 people flying together but did not get the seats assigned in one place. Yes, we did not pay extra for confirmed seats but since we were buying 3 tickets I think 3 seats close to each other (if not in one row) should be expected."

Cons: "make me sleep in the airport unexceptedly"

Cons: "They lost my duffle bag, and when they found it, my bag was in a whole different state, and once I finally received my duffle bag my items were wet and damaged."

Pros: "Why did my seat assignment have to be done at gate. I booked early and had picked a seat on eac flight."

Pros: "I appreciated that everyone gave us updates constantly to let us know the status of the flights"
Cons: "My flight from Detroit to Denver was suppose to land at 1:15 ish and I had an interview to make at 3:30 thinking that I would have plenty of time to grab my bags and and get a cab to greenwood which is where my interview was. The flight was delays almost 3 hours and I was not able to make my interview which was the whole reason I flew to Denver in the first place. I understand that things happen but now Im out of a possible job that I was interviewing for and I am also out the $250 that I spent on the flight. The flight was delayed because they didn't have a crew to fly the plane which blindside is always 20/20 however it seems like pretty poor planning."

Pros: "Funny, engaging crew. Nice change. It was Thanksgiving, could have offered a free drink or a better snack."

Pros: "We arrived at the destination on time, all staff were friendly and provided good service."
Cons: "Left a little late, but the captain made up rime in the air."

Pros: "The crew played games with us before we got on the plane and handed out water and snacks. That was a first for me and it was pretty awesome. I told them a head of time that I get really scared during tubulance and they all knew my name and checked on me during the bumpy parts of the flight."
Cons: "I didn't like that I had to pay for movies"

Pros: "The service."
Cons: "Seats too close together."

Pros: "LaGuardia is terrible. We sat on the ground at the gate for 35 minutes after boarding because (according to captain) the ground control was not allowing plans to move. then there was a 30 minute delay for take off because of the traffic jam. If LaGuardia can't handle the traffic you should direct your clients elsewhere."

Pros: "I didn’t like anything at all"
Cons: "They have to add electronic devices or charge plug on it"

Pros: "Nothing"
Cons: "They canceled the flight"

Pros: "Crew on board are great."
Cons: "American keeps canceling and changing schedules. They cancelled flight section and took it out of my itinerary. Then took over 3 calls and 2 hours on hold to fix."

Pros: "Amazing Crew"

Cons: "The flight from Boston was extremely delayed,but miraculasly, the boarding to conecting FinnAir flight 6, took extra 10 minutes, which gave me a chance not to catch it. Though, me and the AA rep., had to cross-run about a mile up and down the escalators at terminal 8 , my baggage was left behind and did not make a transfer to FinnAir 6. At final destination I was asked to file a lost baggage claim. If not the initial flight from Logan, everything should go smoother."

Pros: "Pleasent"

Pros: "Bos to Rome via jfk. Both flights easy in all ways. Grrat first class seat one first flight and quite good bus class on second. New Flagship Lounge a real plus."

Cons: "3+ hour flight with no TV/ entertainment"

Pros: "Ease of boarding with the group numbers"

Pros: "Best landing I’ve experienced recently!"

Cons: "Too cold"

Cons: "Entertainment system went down toward the beginning of the flight. The crew seemed irritable, but that was probably because people were upset about the entertainment system. We had to listen to a loooong speech about their credit card. I, personally, don’t like sales pitches over the intercom in the middle of a flight. Had the movies been working, it would’ve paused during the long speech. Not cool at all!"

Pros: "No hassle of changing terminals in JFK, no bagagge claim, AA check-in-this time, was a "good luck"....Connection in Helsinki, very quik!"
Cons: "Finnair flight AY06 are old aircrafts. Every other in-seat monitor was out of order, flight attendants could not do much. That created mess for passengers, trying to move their seats to the ones with working monitors....."

Pros: "The first leg had awesome pasta.Then, on the 2nd leg, Philly to Denver, they had a "pay for meal" option for turkey with Chutney sandwich - again, delicious. I should add that the service was very good as well."

Pros: "Staff was great!"
Cons: "Seats were really uncomfortable up and reclined. Overhead baggage was full by the time I boarded and there was no enforcement of the carry-on baggage sizes... This needs to be addressed and contributed to our lack of comfort, noting this was the last leg of an 18 hour journey. My body still hurts today after a good nights sleep."

Pros: "Wonderful, again. Will fly American any chance I get!"

Pros: "The onboard entertainment selection was excellent; great movie selection, wifi connection, and flight details. A winner! So much so that I chose to binge watch movies and not sleep!!"

Pros: "Professionalism and all time smile of the crew"
Cons: "That there is not TV in the plane"

Cons: "The plane was dirty, the window had a leak, the TV was too far away and the sound system to watch the movie was broken. When the plane is in that poor of a condition, it's time to replace it. F."

Pros: "The flight crew was professional, friendly and competent. They served the dinner as early in the flight as possible."
Cons: "This was a plane with central screens along the aisle, and the airline chose to broadcast a sci-fi action movie with almost constant flashing blue light, and violent action scenes. This was first of all a movie that many people, including me, would never choose to watch, but since it was on the aisle screens there was no getting away from it. It was also unsuitable for children, even without sound. But mainly, I object to the showing of any film in that situation - only aisle screens available, and on a night flight where most of the passengers are trying to sleep. I was awakened several times by the flashing lights. Other things: one of the bathrooms was not very clean, and the plane felt like the usual cattlecar, with just 3 seats on each side of the aisle, which is unusual and unpleasant for a transatlantic flight."

Pros: "The boarding was fast, the flight was faster than expected too, crew was very efficient and friendly."
Cons: "Space between seats too small, breakfast not good, too far inside the plane... Not so happy of the company rules : whatever you want to change, it will cost you. I suppose it's the way to keep flights cheap, but it's not fair to pay if when you arrive first, you have to pay to change for another seat... One free luggage of 23 kg when you cross the Atlantic is not enough..."

Cons: "None"

Pros: "Cabin was clean. Flight attendants were courteous."
Cons: "Their snacks were merely a cookie which was okay, but not what I would have wanted."

Pros: "Good service from crew members"
Cons: "The flight was delayed for 2 hours"

Cons: "This is our honeymoon! Every single blessed thing you sent said British Airways, but it was really American. Ended up at wrong terminal. Staff uncaring, plane cramped, seat reservation not honored. The worst. You will be getting a letter on your deceptive practices and I am going to bury you on social media. Kevin Howard"

Pros: "Everything was smooth and organized. The flight even arrived early. Friendly crew and comfortable seats with extra leg room (but these were too expensive). Food was quite good for airline fare."
Cons: "Fee for more legroom."

Pros: "The flight was very smooth and the crew was so friendly!"
Cons: "It was an older plane and it felt a bit cramped."

Cons: "Watched a very weird interaction between Muslim (with a hajib) women with a kiddo and desk crew. She wanted to sit next to her child on the flight and needed to switch seats to be able to. Woman was very gracious and understanding that she was asking for an accommodation. Ends up her flight to Philly had been moved to a different gate after they had found a volunteer to switch seats. Volunteer was totally unfazed but Desk crew made it seem as tho the Muslim mom was at fault for the time and trouble they had had to go through to accommodate her. She apologized profusely and was very appreciative for the trouble evernote had gone to for her. . As she walked away the crew looked at each other and shook their heads. Pretty crummy way to treat customers!"

Pros: "Wine"
Cons: "No tv's for such a long flight. One tv on the ceiling every so often does not qualify for entertainment.. flight was delayed for 3 hours. Never American Airlines again"

Cons: "No wifi or any video"

Pros: "We arrived safe."
Cons: "The plane had been on the ground for 6 hours prior boarding time, yet we leave until 1 hour late. Waited for the food to be loaded and then waited for paperwork to be signed. Really?"

Cons: "American Airlines made me check my carry-on luggage, despite there being many open overhead compartments visible on the plane."

Pros: "The flight was on time and the crew are nice with the people"
Cons: "Too crowded not able to take my other luggage on board."

Pros: "The departure time. This left enough time to get to the airport and go through security without rushing!"
Cons: "Sitting in the middle Paying for luggage ( I wish Southwest flew out of ORD)"

Pros: "All good - with every aspect of the trip."

Pros: "Loved the people, very friendly and accommodating. I sat in first class and felt very comfortable."
Cons: "I think needing your own device for entertainment is awful then having to pay rental fees, even if you're in first class."

Pros: "Crew was nice including those helping with boarding."
Cons: "Difficult to recline chair. Limited snack options. Landing was a bit rough."

Pros: "The plane was not full"
Cons: "Booked Brittish Air, got American. Plane delayed, no wifi, TV screen could not be seen from seat. No control of TV. Plane seats old & uncomfortable. Paid a premium price for a sub par experience."

Pros: "Plane wasn't full"
Cons: "We booked on British Air, but got American Airlines. Something I didn't realize. I don't like Amercan Airlines! No internet, no tv. Only overhead tv too far away to see from my seat and no choices Old plane"

Pros: "No turbulence Efficient"

Pros: "Got there in one piece"
Cons: "Left late. Ran out of food before all were served. Cabin staff were weary and more attentive to each other than the passengers. With us packed in like sardines,American maintains it's reputation as the Greyhound of the air. Next time Jet Blue."

Pros: "had onboard in seat entertainment. Mostly TV shows but not bad."
Cons: "Center seat, group 3 boarding, poor seat spacing in coach."

Cons: "The flight landed about 30 minutes early. We spent one hour on the tarmac waiting for a gate, resulting in us being late .. compromising many with tight connections."

Pros: "On time"
Cons: "No free food or drink"

Pros: "30 minutes early in Dallas,"
Cons: "Cabin where I sat was way too warm"

Cons: "Changed equipment and my aisle seat went to middle seat with no advance notice"

Cons: "Everything about it was terrible. So late we nearly missed a legal AA contection. No USB or WIFI as promised. Rude staff."

Pros: "On the way there, it was a newer plane in nicecondition, comfortable, entertainment was ok."
Cons: "AA IOS app - always problems getting the mobile boarding passes. This time is just like every other. Never a problem before with US Air or Southwest Food - There and back, sandwiches and non-snack items were sold out by the time crew could get to the rows in the back Plane on the way back was a certified POS. Seats were ancient and broken, Engine couldn't start - twice, and no entertainment"

Pros: "Flight operated by Compass Airlines and they have friendly crews who are a pleasure to deal with."
Cons: "As a late night flight, you are only given a snack, so not much of food choices. The plane is an Embraer 175 and the seats are OK but unless you sit in Row 1 in First Class, the legroom is a problem."

Cons: "I am a Platinum flyer and was flying with my family of 4. Upon boarding our pre-assigned seats were taken away and assigned to someone else. We waited while all classes were boarded then we were given seats, separated through tout the plane."

Pros: "Crew was professional and friendly."
Cons: "The plane was delayed by an hour and thirty minutes because it was coming from another airport where it was delayed."

Cons: "The plain was cold It’s the first time ever I had get my coat on because of the temp No in seat screens and expensive WiFi"

Cons: "I paid $100 for an upgrade on a United which turned out to be the first row, and right beside the rest room (which was erroneously showing as occupied for the first 20 minutes). The traffic made it feel like I was sitting on a bench in Grand Central Station. I chose an aisle seat but ended up mysteriously in the middle seat. I had extra leg room but if I’d eaten the free 5 pretzels I wouldn’t have been able to fit it my seat any longer. The WiFi wasn’t working for the first hour of the flight. The flight attendant got really annoyed when we didn’t look up when he came by with beverages the first time. We all had headphones on and were looking at our personal screens. The activity by the rest room was constant so we didn’t notice it wasn’t just someone waiting for the loo. The luggage took so long to come out I thought my conference would be over before I got it. Overall, I thought it was bad and confirmed why I don’t fly United. Old, dingy planes, poor service. The pilot was pleasant and communicative so there was at least that..."

Pros: "The crew was attentive, professional, and courteous"
Cons: "5 hour delay"

Cons: "Not being delayed for 2 hours"

Pros: "I liked the ticket price."
Cons: "The seat was very narrow with absolutely minimal leg space, and a carry-on bag was not included in the fare."

Pros: "The crew and pilot were terrific. Soft take off and landing. We flew past Toronto over Lake Ontario. Great views!"

Pros: "Great take off and landing. My ears were not even plugged up after landing. Great piloting skills by the crew."

Cons: "They made me put my carry on under the plane."

Pros: "Things were new"
Cons: "Seats were smaller, legroom was less, seatbacks when fully upright push your heard forward so when I fell asleep, my head kept falling, NO FREE ENTERTAINMENT. They tell you to download the app mid-flight to get free entertainment, but you need to pay for wifi to access the app store."

Cons: "Seats space was very toght"

Pros: "The flight attendants were so nice, and although our flight was delayed and hour and fifteen minutes and our layover was an hour and fifteen minutes, we were able to make our connection! Since our connection to Portland in Denver was the last flight of the night, they were able to hold it for us. This was wonderful because there weren’t many flights out that weren’t booked solid for the next day. The attendants on this flight were great about updating us with information for the connections and telling us when we would land in Denver."
Cons: "The plane was delayed over an hour for cleaning. It was frustrating to say the least."

Pros: "Nice jet, nice ride, fun trip, amazing gate agents!"
Cons: "Actually everything was great."

Pros: "The crew was excellent, very friendly and helpful. the pilot announcements were unintelligible. I appreciated that the crew anticipated that overhead luggage space would run out and offered gate checking of luggage all the way through to my final destination. I took advantage of their offer and it made my connections so much quicker and smoother"
Cons: "The room for seating is way to crowded, I need more leg room and don't feel I should have to pay extra for a minimum requirement for air travel. Beverages were skimpy, should be offered more often."

Cons: "Inspire of making it clear all through booking, check-in and seat assignment, I was assigned a seat in an emergency exit. I told crew before I boarded that I could not open the emergency exit at assigned seat, due to an injury. I had to board almost last waiting for them to find someone who would take that seat. Then they put me in a non-reclining seat. I was given the wrong free beverage and the crew never came back. So I had nothing to drink on a 4+ hour long flight."

Pros: "Free movies on the plane, because of errors."
Cons: "4 hour delays both ways. We missed our connection flight due to delays on the way home. That connection was the last flight out of that airport home. We ended up having to sleep in the airport overnight, because United wouldn't pay to put us in a hotel even though the delay was because of a mechanical error on the plane. Our 5 hour flight turned into a big ordeal."

Pros: "Smooth and early."

Cons: "Was afraid I may get beat up. Flight attendants were quite stern."

Cons: "The boarding process gives me anxiety."

Pros: "Nothing"
Cons: "They would not let me travel with one carry-on and one smaller item. They made me check one item. This has never happened to me on a flight before. During the flight and in between during the layover all staff members were very rude. I will never fly with united again."

Pros: "Efficient"
Cons: "Bumpy ride"

Pros: "Scored anot exit row for no extra charge"

Pros: "Great flight Left in time Arrived early"

Pros: "This leg of my journey was fine. Sat in the middle seat. Was able to sleep most of the way."

Pros: "Nothing"
Cons: "Our plane departed on time, 6:05 AM. About 6:40 A E turned back towards Boston. There was a problem with the wing. It got repaired. We deplaned. And waited. And waited. Then we needed fuel to be removed. And we waited. And waited. Then we got back on board, got to the runway, and the RIGHT ENGINE didn't start. So they tried to repair it, couldn't (didn't want to fly on that old, broken plane anyway at this point), and we had our flight canceled. All told, I spent 10+ hours at Logan Airport. It was an absolute disaster."

Pros: "better seats than in the past"
Cons: "flight attendants fighting with a passenger"

Pros: "Once flight began it ran quite smooth"
Cons: "I chose seats when I booked the tickets. So... Not quite sure how both myself and my partner didn't end up seated together, and both ended up in a middle seat sandwiched between 2 overweight people... Are you little people profiling to break up the overwhelming number of big people? another couple with 2 kids were also broken up into distant areas on the plane. I know everyone complains about so many things, and this wasn't the end of the world, but still, it's not ideal. The seating/etc seemed more disorganized than usual for this flight."

Cons: "Unreliable wifi."

Pros: "The crew was nice and boarding went smoothly. I'm glad that they now offer complementary small snacks."
Cons: "I can never get the entertainment to work on my personal device and the seating is always tight in economy class."

Cons: "The second leg of my trip was a disaster. Dealparture tike change 5 times from 6:50 PM to 10:15 PM. Exhausting! Then the flight attendant was aggressive and rude."

Pros: "Crew friendliness"
Cons: "Boarding was a mess with an adjacent gate exiting at the time of boarding creating a melee of people crossing queues. You have a carry-on baggage policy - stick to it. I wasn't carrying any roll-ons or large items but many of my fellow passengers were carrying multiple items in the hope of either getting them on or having them checked for free. Complete shambles with later boarders running up and down the aisle trying to fit their carry-ons into overhead lockers. Solution: Enforce one item only; Apply free checked items at the gate early. Apply a fee for items that don't fit and were not offered up for checking."

Pros: "Boarding was consistent and timely"
Cons: "Older, worn interior, especially if seats are pushed back"

Pros: "On time or close to it. Nice crew."
Cons: "Bumpy but pilot did her best to find the best altitude."

Cons: "It was over 7 hours late. The second plane was old and in poor condition. The crew attitude des were awful."

Pros: "Getting off the plane"
Cons: "Bathrooms weren't working, huge lines in aisle, lackluster service. Overhead bins were full by Group 3. late takeoff."

Pros: "The attendants were the best I have ever experienced. Traveling with my disabled father can be very hard but it was great. We're always going to fly United!!!!!"
Cons: "Nothing"

Pros: "United seems to be recycling which is a good thing."
Cons: "The obnoxious child sitting behind me. He kicked the seat and pulled on the tray."

Cons: "Our flight was 2 hours late, the customer service was horrid and didn't even acknowledge people who needed help at the front desk. They we're too busy talking to their coworkers. We then get on the plane and it's old, run down, and the take off and landing were the roughest I've ever encountered. Nobody was remotely professional and we landed after our rental car company closed so we had to go back to the airport the next day. NEVER FLYING UNITED AGAIN!!!"

Pros: "I didn't die."
Cons: "I almost died. There was some sort of overheating happening under my seat requiring constant monitoring by the crew and myself; I burnt myself on the wall of the plane. It was terrifying. The flight crew was able to rule out fire but said all they knew in the cockpit was that it "has something to do with the wing". REFUND PLEASE?!?!?"

Pros: "I liked how the flight attendants treat people in this flight. Thank you all."
Cons: "I didn't like how long the flight was, but that is not up to anyone to decide. I liked my stayed in the airplane."

Pros: "The crew was courteous and nice. Due to a 2+ hour delay we had free movies on the flight."
Cons: "The fact that our incoming flight was delayed more than 2 hours."

Pros: "Nothing."
Cons: "Recently United decided to cancel all of their flights to Denver due to an April snow storm. United was the only company that chose to cancel rather than delay flights. Our flight was cancelled 24 hrs before any snow fell. Their solution was to offer us another flight over 72 hrs out. After spending 6 hrs on the phone with this company (not exaggerating) I feel entitled to say that this company holds zero accountability or concern for their customers. We had to spend an additional $500 to get to our destination last minute through JetBlue."

Pros: "The flight was delayed but the gate staff and flight attendants did an excellent job helping us to get quickly to our connections"

Pros: "Instead of a 4 hour layover in Denver, I was easily able to get on an earlier flight to slc thank you to such a wonderful front desk agent. Even the crew members on board were so pleasant you could tell they truly enjoy their job and want to make for an enjoyable flight. Thank you United!! Will be flying with you again!!"

Pros: "Extremely friendly crew"
Cons: "No entertainment, but that is expected"

Pros: "Efficient boarding"
Cons: "Very rough flight but pilot did a good job of keeping passengers informed"

Pros: "My flight home was surprisingly faster than I thought it would take and the entire time I was comfortable and relaxed."

Pros: "The crew members were welcoming and the cabin was clean."
Cons: "Only limited drinks were available and then the flight attendant forgot to bring the water I requested. Thankfully it was a short flight, so it wasn't that big of a deal."

Pros: "Customer service at Dulles was helpful"
Cons: "My trip was jacked up on both ends, starting with cancelled flight at 11 p.m. the night before, phone calls to United to change flights on the way out, and then maintenance on the way back home, which caused me to miss my connection in Dulles. Horrible accommodations, bad replacement flights, baggage service in Syracuse was dishonest and apathetic. All around bad."

Pros: "Plane was comfortable. Flight service was good."
Cons: "Flight was extremely delayed and an accurate timetable was not communicated well."

Pros: "The staff was very kind and the plane was clean."
Cons: "Around the time we should have been starting our descent into Denver, the pilot came overhead and said we had been re-routed an hour north due to storms and would land in about another hour. It would have been nice if they had notified us of the change as it happened. Also, when I bought my ticket online, I was left thinking I had to purchase a carry-on despite the fact that it would fit under the seat in front of me. As it turnes out, I didn't have to and was out that money. I was also caught by surprise by having to pay extra for my seat selection."

Pros: "very social and fun crew"

Pros: "excellent service"

Pros: "Getting off the plane."
Cons: "Frontier is all around archaic in a modern world."

Pros: "Evertytging ran very smoothly. Got loaded early and got to Denver early which is always nice when traveling with a 3 year old."
Cons: "Turbulence coming into Denver was a bit bumpy. Made my niece nervous but I understand is common in denver."

Cons: "What? Wouldnt you think your ticket would actually mean you'd purchased a seat on your flight? Not with Frontier. Extra cost for your seat - ANY seat. And for your carry-on bag. Seats are nearly unbrearably thin and stiff. No recline. No headrest. Miniature tray. Knees push against the seat in front. And not an inexpensive ticket to begin. Last Frontier flight for me."

Pros: "Boarding process was fast. Flight left on time. Crew were polite and helpful. Bathroom was clean and odorless."
Cons: "Seat didn't recline! So uncomfortable. Non-alcoholic drinks should be free. Crew should let passengers onow about "happy hour" drinks and deals available...I would have purchased one."

Pros: "Very friendly crews. I wasn't troubled with checking the size of my carry on. Very roomy middle seats. Above average for the competitive prices they offer as long as you don't pay any additional for carry on or checked bags."
Cons: "Seats don't recline, no complimentary beverage service. Storage room under seat is very small and if your bag will not fit rules are you must pay for your carry on."

Pros: "Nothing"
Cons: "Everything. Never using them again"

Cons: "Despite the missed connection the woman at the ticket counter insisted that I would be charged for a carry on bag. I flew American instead and will be seeking a refund."

Cons: "fees were charged foe everything from carryon bags,checked bags, seat reservation. There was a fee for everything but water. no updates on flight status, no music, no TV no movies, seats did not recline, stuffed in the seats like sardines."

Pros: "Nothing"
Cons: "Seats don't rcline, extra fees for seat selectin, carryon,food or drink, dirty plane, bored and slobby cabin personnel, late."

Pros: "Cheap fare"
Cons: "The remodeled interior puts the seats closer together from front to back and don't recline. That also limits the size of the tray table, which is tiny. Even as a tiny, short person, it was uncomfortable. For anyone of normal stature it would be torture. Paying for a "better" seat appears to provide very little if any added benefit, just keeps your party together. There is no entertainment, movies, music, or wifi so bring your battery pack charger. There is only expensive junk food to eat. My only option on my coast to coast flight was a red eye. So you arrived just wiped out. So if you do this to save money, in my overall assessment, it's just not worth it. I'll never do it again."

Pros: "Frontier provided hotel vouchers for the night along with food vouchers. Even though there was a bit of a waiting game from time to time, everything was organized."
Cons: "Upon arrival to the Kansas City, MO airport we were instructed to stay on the plane for an undetermined time. We were offered snacks for purchase. I think they could have spared some free snacks considering they had already gone through selling while en route."

Cons: "Might as well take flying school bus and pay tons of money to do so. Cheap experience that's not cheap at all after they chafe charge you for every possible thing. My new least favorite airline. I will never fly them again."

Pros: "Nothing!"
Cons: "Everything! Had to pay $40 for a carry-on, $35 to pick my seats in advance, $35 to check a bag, over 110 in fees before I got on plane. $2 for a Coke- water was free but they were rude when you asked for it. No tray tables, seats didn't recline, Felt like I was on a bad school bus."

Pros: "There was a flight delay due to bad weather and since I would miss my connection, I had to be rebooked onto another flight. The whole process of rebooking was tedious and annoying"
Cons: "The customer service and the airline staff."

Cons: "Delayed again longer then they said it would be as well, also their reason was "there's no good reason" awful"

Pros: "Not much. The crew was fine. Also customer service people I spoke with were good. One was excellent. Seats themselves are comfortable but the closeness of the rows is horrible! NO ROOM!"
Cons: "I cannot stand the fee structure of charging more than any other airline for EVERYHING! $60 to pay for one carry on bag if it is at the gate!!! You guys are simply mercenary. It looks like others hate this also from the reviews I can see. Your fares are not less! to justify the additional charges! LEG ROOM WAS LESS THAN ON ANY OTHER FLIGHT I HAVE EVER TAKEN. I have never been so squashed in a plane. I will not fly frontier again if I can help it."

Cons: "5 hr delay with no explanation."

Pros: "Everything went smoothly"
Cons: "Paying extra for what would have been a carry on for UA or AA"

Cons: "While the fare for Frontier was reasonable; I chose them because of flight schedule. However, I couldn't believe how much more I had to pay than just the fare. Baggage fees for not only checked bag but carry-on plus the seat selection added $94 EACH WAY to my costs. That is unforgiving. I'm back to Southwest."

Pros: "There's nothing bad about Frontier's service. Flights were on time, staff was courteous."
Cons: "BUT, they don't honor Global Entry or TSA Pre-Check, which is ridiculous! The ticketing agent told me "it's not in the budget." Had I known this ahead of time I wouldn't have purchased a ticket from Frontier. The security lines were incredibly long in Denver and this added a good 30 minutes to my passage through the airport."

Pros: "Flights were on time"
Cons: "Nickel and dime you to death."

Pros: "Everything was efficient, smooth flight, and we landed--that's a good flight, right? We even landed 30 minutes ahead of schedule, which was great since I had to wait at the baggage carousel."
Cons: "It was my first time flying with Frontier and I didn't know about the bag charges and seat charges--that's on me though. Not sure I will fly with them again, as waiting for what COULD have been my carry-on at the carousel took so much time... then again, it makes it easier and quicker to board and de-board. But the seat charges were still ridiculous. Wish drinks and like, pretzels could be free just so we don't deplane with harsh breath."

Pros: "I didn't have to pay extra for my seat with extra leg room"
Cons: "There was confusion about my seat"

Pros: "You sold me the wrong date 2/17 and I had to buy the RIGHT one 2 days prior to my trip."
Cons: "Your inflexibility to changing flight prior to actual flight/need."

Pros: "Nothing"
Cons: "Everything"

Pros: "All was on time, crew was friendly, emergency on board was handled well."
Cons: "The seats are not movable, so you could not lean back a little. No screen for entertainment, tray table was less than half the normal size, uselss, snack choices, had little that one might consider healthy. A lot of junk food, and a huge offering of alcoholic beverages. Could we maybe have healthier food. It could still be pre-packaged somehow. Cost of carry on: $30. Checked suitcase: $25. That did not really make any sense, other than they make more money that way. Also irritating that if you want to have a specific seat, rather than waiting for what you might get at the airport, you have to call them, and pay $13 for a seat reservation. They are nickel and diming you, or rather in dollars. It is a rip off."

Pros: "inexpensive, on time, no BS. the bag check fee sucks, but even with that cost, to Denver the flight was much less than closest competitor."

Pros: "The air fair. Even after the fees for seats, and bags, the flight was still 100 bucks cheaper than the cheapest competitor. I was in a empty row...except for me, of course, so I was able to spread out a little. The Airbus 319 was clean and appeared well maintained as everything worked. I didn't eat or drink anything so I gave 3 stars."
Cons: "Fees for everything, carry on, seats, coffee, food. The seats are rigid and nonreclining. This does avoid the spilled coffee or laptops being bumped. Although you couldn't actually put a laptop on that little tiny tray. We did have an unusually long period of turbulence that kept people bouncing and swinging for about 40 minutes. That was not the Captains fault since it was clear air turbulence and was unavoidable. It was the roughest ride I had felt in some time."

Pros: "Obviously the price is what makes me keep buying Frontier tickets. The crew is okay, I always notice there are a ton of extra staff on board sitting in jump seats."
Cons: "The price of a carry-on is ridiculous, and the seats are crammed together with no chance of reclining. Tall person behind you? Prepared to have his knees in your back for 4 hours."

Pros: "Wish they had free snacks."

Pros: "I will never fly Frontier again. Poor customer service. Poor baggage handling. Poor timeliness of flight and baggage delivery. Poor communication of flight delays and baggage mix-ups. Understaffed. Undertrained. Poor seats, particularly considering I paid for the best. Inadequate compensation for 8+ hour delay and missing baggage for 3 days. After all the nickel and diming for seats, baggage (checked AND carry on) it would have cost me less to fly my preferred carrier and avoided every hassle, not to mention the inadequate compensation (again). Horrible, horrible experience."
Cons: "I will never fly Frontier again. Poor customer service. Poor baggage handling. Poor timeliness of flight and baggage delivery. Poor communication of flight delays and baggage mix-ups. Understaffed. Undertrained. Poor seats, particularly considering I paid for the best. Inadequate compensation for 8+ hour delay and missing baggage for 3 days. After all the nickel and diming for seats, baggage (checked AND carry on) it would have cost me less to fly my preferred carrier and avoided every hassle, not to mention the inadequate compensation (again). Horrible, horrible experience."

Pros: "Excelente"

Cons: "From the inappropriate and unprofessional threats of the flight attendant to the up-charges for everything, this is truly the worst airline out there. Never again."

Pros: "They surprised me at the counter with a 50 dollar carry on fee. It was complete chaos boarding more than usual. The flight was an hour late. The guy at the counter representing them and the attendants were rude."

Cons: "Everything is tribble I will never fly with frontier airline again"

Pros: "Price of flight"
Cons: "Everything else."

Pros: "I made it to my destination safely."
Cons: "Complementary soft drinks or coffee would have been nice."

Pros: "The seats were comfortable and the crew very friendly."
Cons: "The seats did not recline. All food was overpriced including water. I had prepaid for a suitcase, but they refunded to me when I tried to check in online so had to pay $40 instead of $30 when at the counter."

Cons: "I paid an extra fee to pick my seat. When I boarded the plane the flight attendant informed me that they gave me seat away to an infant because the mother wasn't aware that she couldn't put a car seat in a isle or middle seat. How is that my problem? Maybe give away a seat that a passenger didn't pay for. The flight attendant was extremely rude and told me if I didn't like it I could take another flight. How about you put that baby and irresponsible mother who failed to read the fine print on another flight?"

Pros: "There was a lot of things that i didn't like but the crew made me forget about all the bad things. Amazing crew and funny just maid everyone smile and laugh. Without this crew i think i would have hatted my flight but they made it worth it."

Pros: "Crew was fine."
Cons: "Uncomfortable seating, had to sit all cramped up, had to pay for water, even though got boarding pass online had to stand in line at airport for 45 min. for checkin process, had to pay extra for luggage and seat assignment."

Pros: "Boarded on time. Friendly crew."
Cons: "No leg room. Should serve free beverages."

Pros: "Inexpensive, quick"
Cons: "The seats were fixed, tiny and I was uncomfortable the whole time."

Pros: "Boarding was fabulously easy."
Cons: "I did not know during booking about the carry-on fee or the seat fee (!!!! though I later learned that if you didn't select a fee for a seat they would assign you whatever was left, not that that is appealing). You had to pay for everything except water. There was no in-flight entertainment at all. Trays were tiny. I will never fly this airlines again."

Pros: "Reasonably efficient, on time on the way out, 30 minute delay on the way back. Crew was pleasant enough."
Cons: "Seems like a good deal, but be careful! I expected a budget airline where one had to buy coffee or soda onboard, no big deal. I didn't expect that the carryon baggage, would cost nearly as much as the flight. I expect a charge for premium seating, but not a charge for ANY seat selection, etc. Seats were the worst I'd EVER encountered. No headrest at all, no padding, nothing. I'm not too picky, and at 150 lbs don't strain the capacity of most airline seats, but this was BAD."

Pros: "food and entertainment were not spplicable- you might need to add that sd an option"

Pros: "Space on plane sense nobody flies this airline."
Cons: "Ticketing agent denies a 6'6" traveler an aisle seat because it's, in their words: "Fully Booked". Once onboard, you realize the plane is half full and that the ticketing agent just didn't want to be inconvenienced."

Pros: "Quick and easy flight"
Cons: "Could not enter the gate, waited on the tarmac after arriving for a long time with rude flight attendants."

Pros: "but reach destination 45 min.early"
Cons: "late by 2 hours"

Pros: "Nothing!"
Cons: "Everything!"

Pros: "Price"
Cons: "Check baggage line"

Cons: "Poor customer service. Rude staff."

Cons: "The aircraft was freezing. The water was not complementary and I didn’t have a card to pay with I only had cash. The seat was extremely hard and uncomfortable. The flight was last taking off and landing."

Pros: "Seats were comfortable and it was nice to have trays"
Cons: "The blonde woman doing all the announcements was rude"

Pros: "I like the cheap price of the ticket, Spirit charges for each bag. We paid over$200 in luggage fees! Then they charged us for $3 for a can of soda! Never again."
Cons: "I like the cheap price of the ticket, Spirit charges for each bag. We paid over$200 in luggage fees! Then they charged us for $3 for a can of soda! Never again."

Pros: "This trip was on a newer airplane I believe as it seemed there was a little bit more leg room between rows/seats. Seats did seem a little bit more comfortable than the previous Spirit jet I flew on."
Cons: "Still seemed cramped in the seats with not much leg room. Seats did not recline at all"

Pros: "Staff very friendly and helpful"
Cons: "Seats uncomfortable"

Pros: "Boarding was efficient Price was reasonable Flight boarded and landed on time"
Cons: "Leg room was tight Wish the people at the gate were a little more friendly"

Pros: "Friendly funny staff . No issues!"

Pros: "Great price...decent comfort... left on time and arrived 30 min early. No snacks/wake up meant a good relaxing flight with a nap."

Cons: "Delayed, on take off. Long time getting luggage after flight. Everything cost money even water."

Pros: "On time"

Cons: "I'm only 5'6" and my knees were jammed into the seat in front of me... wildly uncomfortable."

Pros: "Barbara."

Pros: "It was better than Frontier Airlines."

Pros: "Missed flight! Got delayed and they never called us and we were at the gate area. Spirit is terrible."

Pros: "Low fare. NOT WORTH IT."
Cons: "Like flying with WalMart people taking a cross-country bus."

Pros: "I liked the VFW lounge and the free amenities for us veterans"
Cons: "Everything els, horrible everything..will never fly Spirit again"

Pros: "About the only thing that I can say I liked is, the boarding process went smothly for me & my luggage was on time."
Cons: "Where to start... paid more in bag fees & to get an isle seat for each(4)flights than I did for damn plane ticket! Flights delayed 4hrs another flight in same trip delayed 2 hours. Staff wasn't interactive/friendly I'd say 6/10 were nice. Asked for an isle seat the person helping at counter, said I'd have to pay to upgrade. Seriously- upgrade for isle seat!! I paid to have an isle seat on all 4 flights(I'm a disabled vet who was injured in the line of duty) I need easy access to toilets I'm unable to crawl over people, in turn need idle seat). Paid for isle seat all 4 flights- just to see the flights were super empty, people were sitting where they wanted anyway. Thanks for taking my $ for the seats tho spirit:-|. Staff wasn't that friendly compared to other airlines I've flown on. Not food. No entertainment on flight. Not worth it. If they don't do better business they won't last long I feel. There is potential just needs some work!"

Cons: "I find this company to be a con .. when I pay $54 for a flight, only to get to the gate and told I need to pay $57 to carry on my luggage, it feels like I'm being hustled by a street merchant. Its unfair, it doesn't seem ethical, and I'll never fly them again. SO cheap, that they pulled this tactic, and its a shame Kayak does business with them, gives you a bad name as well. Honesty is everything, this company is an F-"

Pros: "One of the attendants was extra nice can't remember her name but she sat rear facing at the middle of the plane. Very curious."
Cons: "Having to pay for a carry on is rediculous, penny pinching scam to up the cost of flying The attendant picking up the garbage was rude I disagreeing with him on some stupid topic and he said to mess with him that the attendants always win and the passenger always loses."

Pros: "Quick boarding"
Cons: "$55 for carry-on, $4 for snack, no entertainment, no Internet, no reclining seats"

Pros: "Clean airplane."
Cons: "I feel cheated and deceived. A checked bag costs $50. A carry on costs $55. If you don't realize this before you go the gate it goes from $65 to $100. The counter crew was rude, and the boarding crew in Cleveland was shaking down passengers to be sure they were not "cheating", stopping the boarding process to check passenger receipts. Getting an assigned seat, an extra $15 per person. And there was absolutely no leg room for that extra $15 (which I paid for). These costs should be shared upfront - basically every ticked is $50-$65 more than the website shows. I will not fly this airline again."

Cons: "This was one of the worst flight experiences of my entire life. I had to pay almost $200 in extra fees, which included everything from checked bags, carry on bags AND seat selection. Their website is awful! It took me over 2 hours plus 2 customer service phone calls before I was able to check in for my flight. Completely disorganized at the airport. Under staffed. We arrived 2 hours early and barely made our flight. We were in lines so long we barely had time to use the restroom, let alone find any kind of food for the flight. Upon boarding, I witnessed one of the flight attendants being extremely rude and hostile to a female customer who was talking to her friend about how bad her Spirit experience was. A supervisor came back and instead of reprimanding the rude flight attendant, she told all of us that if the flight attendant didn't feel "comfortable" with any of us, we would be "removed" from the flight! The flight was delayed because they closed the cabin doors before 10 additional customers were able to make it through their ridiculous lines. Instead of apologizing for their incompetence, they blamed the customers for being late, despite the fact that at least one of them initially arrived at the same time we did (2 hours before the flight)! Oh and the flight itself was rickety as hell with screaming babies everywhere. I'm absolutely DREADING the return flight home. This is the worst airline ever and should be shut down as soon as possible."

Pros: "WOW! Super impressed with the staff. I hadn't flown spirit in years because I had such bad memories about the spirit credit card (false promises) and bad experiences with the staff. But EVERY spirit person was great. From check in, to the flight attendants, to pilots, to people at the boarding gate… really great team now in 2016"
Cons: "Those seats NEED to recline. You have to fix this on your planes. I couldn't sleep I was so uncomfortable and I can usually always sleep…. Pleaseeee recline those joints"

Pros: "The crew was very friendly and funny."
Cons: "The seats are very uncomfortable, hard, small and they don't recline. You have to pay extra for everything even water!"

Pros: "The crew coming back had a sense of humor. Made it more enjoyable."
Cons: "Still think your luggage rates are outrageous. What I saved on flight the luggage check in rate made it more expensive. Probably won't use you again. Sorry, but money is tight. And charging the outrageoust rates for snacks. Shame on you."

Pros: "Because of blizzard was cancelled. Took three days and hours to get another flight. Some on phone were not at all knowledgeable"

Cons: "Flights were near on time but seats are very uncomfortable. Flight attendants in their own world and talking together since they had nothing much to do. Will not book a spirit flight again. Will go with the comfort of Jet Blue."

Cons: "I disliked the fact that the plane took off after the designated takeoff time. When I brought up the fact that I would definitely miss my connecting flight in Florida I was assured that if that was the case I would be provided with accommodation if I had to stay overnight."

Cons: "The flight was delayed and no one notified us at the gate or gave us an update The flight attendants were extremely rude she kicked my bag under the seat because it wouldn't fit"

Pros: "Low cost"
Cons: "Crowded seating"

Pros: "The ticket price was wonderful."
Cons: "Paying for luggage, seat, etc. - everything is an up charge."

Pros: "It flew me from Boston to Florida."
Cons: "The seats don't recline. Everything is an upsell on Spirit including checking in ($18!). It wouldn't surprise me if they put bill acceptor at the bathroom door to pay $3 a flush. If you are over 5 feet 10" this will be the most uncomfortable plane ride of your life so beware the cheap flight price."

Pros: "Teriible delay"

Cons: "All Denver flights were cancelled so after talking with Spirit Airlines the first flight they could get me back to Denver was Dec. 20th which was 5 days later. Extremely poor customer service. I will never intentionally book a flight on Spirit every again."

Cons: "Left 1 hour late Very noisy"

Cons: "I think that if its plan has any mechanical problems it needs to be repair before flying to destination! Now today I'm flying back to home but again still delay and the same problem with plane! I lost my 3 hours to coming to San Diego and spent more money than I thought! That's why I'd say they are not professional! Also I was going to change my flight for next day but customer service asked me to pay more than 100$ dollars, but I bought new ticket for next day for 34$ dollars! So I don't fly again with spirit airlines and don't recommend to anyone to fly with this airlines!"

Pros: "Good organization Excellent crew Plane in good shape"
Cons: "Legroom. I am 6' 4 and I had a hard time sitting. Fortunately it was a 2 hours flight."

Cons: "I was forced to pay 110 dollars just for 2 check bags when I checked in. Being military I expect to pay baggage fees if my bags weigh more than 50 lbs but they didnt. Definitely not going to fly spirit again if I have to pay baggage fees everything I check in."

Pros: "Price was thrifty"

Cons: "It was like I was bothering all personnel involved with this flight. I do not recall receiving 1 Hello or how are you... The room you have in a seat is so tiny that my knees were pinned to the seat in front of me and I had to apologize both ways to the person sitting there- thankfully, they understood. Having to pay to pick your seat both ways?...I opted for free but if I was traveling with someone I would have had to pay an extra chunk of money - same goes for the carry-on fee of $45! I will not be flying Spirit again, or suggesting it to anyone."

Pros: "Everything!"

Pros: "Pleasant crew. New plane. Smooth boarding even though the plane we were to board was late arriving. There is enough leg room to accommodate my tall frame. The seats don't recline but I never recline anyway. The snacks and drinks available for purchase were better than the peanuts or cookies given on other flights. Spirit ticket prices were less than half than other airlines! We saved over $1000 on 3 tix, which buys pleanty of extras on spirit! Will definitely fly them again!"

Pros: "Good seats"
Cons: "No food or water without a price! No snacks!"

Pros: "Had to pay an extra $100 (on top of the $70 I already paid) because my bags were overweight as Spirit's limit is 40 lbs, not 50 as with other airlines. I was flying with gifts, so packing light wasn't an option. Flight arrived almost 3 hours late, so I was stuck forever in their terrible non-reclining seats. Luckily I was in the emergency exit row, so I got some more leg room. Staff was very professional and in remarkable spirits given the situation. I feel like huge delays are par for the course for them. Spirit remains the worst airline out there. Be prepared to pay for a lot of extras and spring for the Big Front Seat, because those chairs will break you and break you fast. And keep in mind that all of your devices need to be fully charged because there are no outlets. But there's also no wifi, so maybe you won't be using them too much."

Pros: "carryon sticker shock along with no free bevs or snacks"

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11/12
Thu
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Spirit Airlines
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11/14
Sat
1 stop
Multiple Airlines
9h 42m
DEN - BOS
12/2
Wed
1 stop
Spirit Airlines
13h 01m
BOS - DEN
12/6
Sun
1 stop
Spirit Airlines
9h 03m
DEN - BOS
11/19
Thu
1 stop
Multiple Airlines
13h 14m
BOS - DEN
12/2
Wed
1 stop
Multiple Airlines
9h 36m
DEN - BOS
12/4
Fri
1 stop
Spirit Airlines
11h 54m
BOS - DEN
12/6
Sun
1 stop
Spirit Airlines
5h 50m
DEN - BOS
11/16
Mon
1 stop
Multiple Airlines
12h 17m
BOS - DEN
11/18
Wed
1 stop
Multiple Airlines
8h 53m
DEN - BOS
12/4
Fri
1 stop
Spirit Airlines
8h 45m
BOS - DEN
12/7
Mon
1 stop
Spirit Airlines
9h 03m
DEN - BOS
11/12
Thu
1 stop
Multiple Airlines
8h 19m
BOS - DEN
11/15
Sun
1 stop
Multiple Airlines
9h 42m
DEN - BOS
11/19
Thu
1 stop
Spirit Airlines
15h 44m
BOS - DEN
12/7
Mon
1 stop
Spirit Airlines
8h 11m
DEN - BOS
11/12
Thu
1 stop
Multiple Airlines
8h 19m
BOS - DEN
11/18
Wed
nonstop
Multiple Airlines
3h 46m
DEN - BOS
11/7
Sat
2 stops
Spirit Airlines
38h 32m
BOS - DEN
11/10
Tue
2 stops
Spirit Airlines
29h 18m
DEN - BOS
11/12
Thu
1 stop
Multiple Airlines
8h 19m
BOS - DEN
11/14
Sat
nonstop
Multiple Airlines
3h 46m
DEN - BOS
11/11
Wed
2 stops
Spirit Airlines
38h 32m
BOS - DEN
11/18
Wed
1 stop
Spirit Airlines
8h 53m
DEN - BOS
Show more results

Recent one-way flight deals

11/12
Thu
1 stop
Spirit Airlines
8h 19m
BOS - DEN
11/10
Tue
2 stops
Multiple Airlines
28h 52m
BOS - DEN
11/6
Fri
1 stop
Frontier
12h 17m
BOS - DEN
10/28
Wed
1 stop
Major Airline
6h 51m
BOS - DEN
11/4
Wed
1 stop
American Airlines
9h 45m
BOS - DEN
11/12
Thu
1 stop
Spirit Airlines
8h 19m
BOS - DEN
11/13
Fri
nonstop
United Airlines
4h 35m
BOS - DEN
11/26
Thu
1 stop
Delta
10h 11m
BOS - DEN
12/2
Wed
1 stop
Spirit Airlines
13h 01m
BOS - DEN
10/20
Tue
1 stop
Multiple Airlines
13h 07m
BOS - DEN
11/22
Sun
1 stop
Spirit Airlines
13h 14m
BOS - DEN
11/17
Tue
2 stops
Spirit Airlines
14h 32m
BOS - DEN
10/21
Wed
1 stop
Multiple Airlines
16h 00m
BOS - DEN
11/13
Fri
2 stops
Spirit Airlines
38h 32m
BOS - DEN
10/22
Thu
1 stop
Frontier
12h 14m
BOS - DEN
10/28
Wed
2 stops
Spirit Airlines
38h 07m
BOS - DEN
11/23
Mon
1 stop
Frontier
12h 27m
BOS - DEN
11/1
Sun
2 stops
American Airlines
11h 09m
BOS - DEN
11/21
Sat
1 stop
Spirit Airlines
15h 44m
BOS - DEN
10/20
Tue
2 stops
Multiple Airlines
37h 18m
BOS - DEN
Show more results
*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

We compile tonnes of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
please send us an and someone from our team will get back to you promptly.

^
The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.
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