Find Cheap Flights from Boston to Denver

Cons: The flight was delayed for 2 hours, which made me late for work and my daughter late for school.

Cons: Missed the flight

Pros: Nothing

Cons: Terribly uncomfortable seats

Pros: The crew was nice.

Cons: The tray tables are tiny. The seats are hard. It’s obvious they’re cutting corners.

Pros: Nothing

Cons: Terrible flight experience from delta

Pros: Good Flight

Cons: Delays both in DETROIT and a huge delay in Shanghai.

Cons: Traveled Comfort Plus. Looking really crowded in the main cabin.

Cons: Baggage check was never on time and seats were dirty and don’t recline. It was the 15 minute long advertisement for a credit card coming through speakers so loud my ears were ringing that convinced me to never use Frontier again.

Pros: The crew were great and very friendly.

Cons: The flight was delayed for approximately two hours.

Cons: 1hour on tarmac Very uncomfortable chairs Purchased snack and got stale crackers

Pros: EXCELLENT

Cons: Everything was great beside the flight price. Besides that it was EXCELLENT!

Pros: The price is right.

Cons: (1) The seats don’t recline; (2) have minimal padding; (3) minimal legroom. In my opinion, can really tolerate flying Spirit on flights over 2-2.5 hrs.

Pros: Nothing really was standing out to like.

Cons: Flight was late by one how which resulted in problems with car rental. Non standard weight limit for checked bag. It used to be ~50lb on all flights, it's 40lb on Sprint. I did not have to pay, it's just more packing effort. Spirit seems to try to sell everything, even if it's included already. To select a seat (any seat) I would have to pay ~$20. If I do not select I'll get it anyway. Seats could not be reclined. No entertainment.

Pros: Nothing. But it's the cheapest flight, so I can't complain.

Cons: The seats are very uncomfortable. During the boarding, it was totally unclear what is the current zone. When I tried to board they said I should wait for my zone, but there wasn't any information on the screen so it's hard to know, especially if you listen to music and don't hear announcements. Please improve this!

Cons: They have disabled the recline feature on all seats. Even if you upgrade to the wider seats at the front if the plane.

Pros: Connecting flight

Cons: Seat size

Pros: Crew was okay, seat comfort sucked.

Cons: Seats need to be more comfortable. I felt like I was sitting in a slightly padded folding chair.

Pros: Nothing

Cons: Everything

Pros: Reservation person upgraded me without me asking!

Cons: flights on time - no complaints

Pros: Everything was fine except the seats

Cons: The seats were uncomfortable

Pros: More easy to board with the size bag, within their limits, that I thought it would be. Didn't know about all the price sticklers until after I bought my plane tickets, but once I knew the rules and we only packed one change of clothes into a small bag that we could carry on, everything else went smoothly.

Cons: No USB ports on the plane and no entertainment. I've never flown Frontier before so I asked the male Steward a couple of questions about the drinks (short bright from GEG to LAS) he was rude as if I should know the rules. So I simply got water which he filled one third of the way and that was it :-(

Cons: Off boarding

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

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: The beverage service and entertainment was fantastic!

Cons: I wish the seats were slightly roomier.

Pros: Crew

Cons: Food vegan

Cons: Fix the plane before it’s scheduled to take off

Pros: More easy to board with the size bag, within their limits, that I thought it would be. Didn't know about all the price sticklers until after I bought my plane tickets, but once I knew the rules and we only packed one change of clothes into a small bag that we could carry on, everything else went smoothly.

Cons: No USB ports on the plane and no entertainment. I've never flown Frontier before so I asked the male Steward a couple of questions about the drinks (short bright from GEG to LAS) he was rude as if I should know the rules. So I simply got water which he filled one third of the way and that was it :-(

Cons: Seemed short staffed. I was assisting my aunt who is wheel chair bound and they didn't seem to have enough staff.

Pros: Flight from Hartford to Denver was excellent. First time flying From brier so I was unaware that snacks only were available for purchase so I arrived very hungry in Denver.

Cons: Flight attendant was somewhat rude when I had to make a run for the bathroom when the fasten seatbelt sign was on, but I couldn’t delay. Had to wait until they finished serving water instead of pushing their cart forward so I could return to my seat. Shortly after, the pilot made an announcement to please be respectful of the fasten seatbelt sign. I’m a seasoned and obedient passenger but sometimes the need for a trip to the bathroom is immediate. I think the flight attendant could have been a little nicer about it.

Pros: Price

Cons: Seats are way to small. Will never fly Spirit agan

Cons: have people helped with there bags so no heavy luggage falling on customers

Pros: The fligt and crew was fine Im just upset because I had to pay $50 for a standard back pack as a carry on CRAZy!

Cons: Not charge so much for a carry on!

Pros: Price

Cons: Delayed, no info on when or why, app didn’t update to show delay, front desk people rude.

Pros: Great flight Left in time Arrived early

Pros: On time departure.

Cons: It was a CRJ-700, but I was cramped...

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: 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: We arrived earlier than expected and easy boarding.

Pros: The seats were not very comfortable. My seat was very mobile. When the person behind me would get up they would grab my seat. The flight attendants didn’t seem to care about anyone other then the customers in the front row and by the exit row. It was very cold in my area as well not just by the emergency exit.

Cons: The flight attendants should show that they care about ALL the passengers, not just the ones that they know or ones who are paying more for a seat.

Pros: On time flights with punctual boarding and early arrival Polite flight attendants Pilots pointed out areas of interest during the flight Comfortable take off and landing Unlimited snacks and beverages, even on shorter flights Free entertainment, even on shorter flights

Cons: nothing

Pros: Excellent entertainment options with screens installed in each seat.

Cons: A second drink cart offering later in the flight would have been nice.

Pros: Amazing crew

Cons: Late departure

Cons: Our flight from Dublin arrived late, we missed our connection to the Alaska airlines. Since the arrival from Dublin came into terminal 1 and our Alaska airlines flight was in terminal 6 we would most likely have not made our connection anyway. Since we had a 3rd party booking they could do nothing.

Pros: Flight crew was nice.

Cons: They were careless with our luggage. 2 wheels on my husband's suitcase and 1 on mine were broken off. We have flown before with other airlines, never has our property been damaged before.

Pros: comfortable flight

Cons: It was good service 4me...

Pros: Connecting flight

Cons: Seat size

Pros: Crew was nice. However the spirit airline attendant at the desk told me to gate check my bag. I stood there waiting for someone to grab my bag for sometime. So I asked the stewardess and she told me just to bring the bag in and put my carry on in the over head compartment.

Cons: However the desk attendant came on the aircraft took my bag out of the overhead compartment. And then left it outside or the plane. I waited at the airport for until 1:30am before I got a confirmation that the back was in fact at Newark still. I had a nursing convention to go to and I had no clothing. So I had to Uber to Walmart than Uber back to my hotel. So I didn’t get any sleep. I didn’t check into my hotel til 4am due to a negligent spirit employee. I paid for the checked bag and there was plenty of space in the over head compartment. She caused me unnecessary stress and an embarrassing morning with my administrators due to my lack of sleep.

Pros: The crew were excellent.

Cons: No frills airline that nickel and dime you for everything. By the time you pay for luggage and seats, the fare was comparable to a better quality airline. Tight seating, uncomfortable seats, no way to charge your phone or tablet. May as well pay for another airline and be more comfortable.

Pros: Nothing at all!

Cons: Stop charging for a carry on bag to get over on your customers!

Cons: The time of the flight was super late. I wish we could have left earlier. All other aspects were fine.

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.

Pros: lie flat

Cons: cabin crew attentiveness

Pros: Crew

Cons: Food vegan