United's Economy Plus seats offer up to six inches more legroom than standard economy.
United offers free messaging on most flights, with Wi-Fi available for purchase.

Planning a trip from Boston to Denver? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.
Based on the flight data, it appears that the cheapest day of the week to fly from Boston to Denver is Tuesday, while the cheapest month to travel is January.
Cheapest Route: Choose the direct route from Boston Logan Intl to Denver Intl for the most affordable option.
Booking Advance: Book your flight at least 58 days in advance to get the best deal.
Cheapest Airline: Consider flying with Frontier, as it is generally the cheapest airline for this route.
Direct or Layover: It's cheaper to fly direct from Boston to Denver than to have a layover.
AI-powered; AI can make mistakes.
| Low season | November |
|---|---|
| High season | June |
| Cheapest flight | $95 |
Direct departures
Boston Logan Intl to Denver Intl
Monday
Delta, JetBlue, Southwest, +1 more
Delta, JetBlue, +2 more
1
Tuesday
Delta, JetBlue, Southwest, +1 more
Delta, JetBlue, +2 more
1
Wednesday
Delta, JetBlue, Southwest, +1 more
Delta, JetBlue, +2 more
1
Thursday
Delta, JetBlue, Southwest, +1 more
Delta, JetBlue, +2 more
1
Friday
Delta, JetBlue, Southwest, +1 more
Delta, JetBlue, +2 more
1
Saturday
Delta, JetBlue, Southwest, +1 more
Delta, JetBlue, +2 more
1
Sunday
Delta, JetBlue, Southwest, +1 more
Delta, JetBlue, +2 more
1
Direct returns
Denver Intl to Boston Logan Intl
Monday
Delta, JetBlue, Southwest, +1 more
Delta, JetBlue, +2 more
1
Tuesday
Delta, JetBlue, Southwest, +1 more
Delta, JetBlue, +2 more
1
Wednesday
Delta, JetBlue, Southwest, +1 more
Delta, JetBlue, +2 more
1
Thursday
Delta, JetBlue, Southwest, +1 more
Delta, JetBlue, +2 more
1
Friday
Delta, JetBlue, Southwest, +1 more
Delta, JetBlue, +2 more
1
Saturday
Delta, JetBlue, Southwest, +1 more
Delta, JetBlue, +2 more
1
Sunday
Delta, JetBlue, Southwest, +1 more
Delta, JetBlue, +2 more
1
On time. Friendly staff. Took to long to pre bord all the specialty groups. Cramped small plane
On time. Friendly staff. Took to long to pre bord all the specialty groups. Cramped small plane
The seats were comfortable, and the boarding process was pretty smooth.
3 hour delay. Had to change plans and was still delayed.
The staff was very friendly, professional, and courteous. The overall flight was a great experience.
The crew canceled the complementary snack and drink in anticipation of turbulence that never materialized. I was counting on the drink (water) to take the the doses of medication - prescribed for my heart condition - that were due during the flight. Since no snack or meal was served on this flight, I cannot rate the food quality. Otherwise, this flight was excellent.
Departure was delayed more than 1/2 hour while we waited for luggage (only) transfer from another flight/plane. Once approved for takeoff, the flight was excellent.
We got exit row seats both flights. Everything was running on time
The flight crew was extremely rude and especially not helpful when our flight was delayed.
Pretty seamless, just a tad bit late in taking off and landing.
Flight was fine other than there was a gate change that I was not notified of. By chance I happened to check my phone and saw the change, otherwise, we would have missed our connecting flight.
I upgraded to first. Quick and easy boarding. Comfortable seat with power and a nice IPA.
Probably not the fault of Delta but there was delay after delay after delay and I ended up getting home 4 hours later then I should have at 1:30 in the morning
No in flight service, no explanation - FC got service, C+ did not, unsure about Economy. No turbulence to speak of, so I guess another way to cut cost, or promote health and well being of Delta employees? Also, boarding in MEM combined zones, and with overhead space already full on both flights after Zone 2/ Diamond, presents a huge challenge to find a space for a bag. Delta, other than point A to B, is no longer reasonable to fly - very poor experiences, not even taking into account the chastising at the gate and rude crews, across the board.
It would have been better if the flight wasn't delayed by 2.5 hours
Delta’s staff is unmatched. From the gate agents, to the pilots, to the flight attendants… all top of the industry.
Delta flight Delay for ,more that two hours i.e original flight was 6.30 PM and it starts at 8.45 PM, When we connect Delta team for meal vouchers as it is late arrival in designation,But we did not get it as per delta policy , which is not good for mid night arrival,
Inexperienced boarding crew allowed too many bags on to a full flight and delayed takeoff causing a missed connection and unplanned overnight stay. There was a hotel at the airport but Delta would not pay for it offering only to shuttle me to an area hotel. Never even offerred so much as an apology by anyone working for Delta.
Staff was great! Kind and cordial! Middle seat row 28 seat B has a hump in it. Trays were getting stuck when putting down and up. Good flight
Departure was delayed resulting in me missing my connection. Delta did not autimatically find me another flight.
The seats weren’t reclining even though it wasn’t as exit seat
The flight was delayed by two de-icings. The seatbelt did not work correctly. It did not stay tight.
Hotter than Hades in August. Why, why do crews think that in the winter when we are already dressed for cold weather we need a cabin that is 82 degrees. Even the vents were blowing hot air.
Flight was delayed. De-icing took a while. When we landed had to wait for another plane to vacate our gate. Just an overall bad experience.
Not good - outbound flight was delayed and missed my connection even though I got to the gate after running through the airport - the agent would not let me on because the door was closed (flight had not left). There was no notification from United - overall experience was very disappointing. Additionally, I was downgraded from first class to coach on the alternative flight
United have really come back. Airport and boarding process is clear and good, app and information also very good
The entertainment available didn’t work for anyone on the flight. Long 6 hr flight with no entertainment option and the staff didn’t know until an hour into the flight when we made sure they knew about it. They had no way to fix it.
Late FA meant slow boarding. WiFi did not work. I’m a medium plus sized passenger. The seatbelt was for the first time ever barely fitting. And we delayed on the tarmac 40 min
My husband and I had boarded the flight from Denver to Chicago, and one of the last passengers to get on the plane opened the overhead bin above my husband's seat and threw his bag out of the bin to make space for his own. He said, "Mine is bigger!" The flight attendant supported the new passenger. They didn't care that my husband has two artificial knees and must have the foot room in front of his seat to be able to fit his legs in -- and to be able to stand, much less walk, at the end of the flight. I have never seen this happen before, and it was a disaster.
I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.
Had to cancel first flight because Airporter Bus took over 3 hrs to get to airport which resulted in an extra $378 dollar fare . Is there anyway I can be reimbursed for initial fare since it was not my fault? Sent from my iPhone EJ Ledet
Terrible. They canceled our early morning flight after midnight on the day of and had no available flights to rebook my family on for the next 72 hours. Yet they still had other flights that were not cancelled from JFK so it couldn’t be based on the weather. It felt like they canceled the flight based on it not being profitable enough for them. I am not interested in traveling with the again. The absolute worse customer service and lack of accountability.
Horribly rude check in at airport, worst in 25 years of flying. All over a simple issue they could have googled to resolve.
First time flying with JetBlue and never again. I went to the counter to request meet and assist because I'm 74 and my wife is 79. I walk with a cane and my wife is handicapped and has her own wheel chair. I told the agent that my wife and luggage was at the entrance door. The ticketing agent said to me that they don't offer meet and assist. I need to bring them our luggage and then go back and get my wife in order to get my boarding pass. As I went back to get my luggage a Southwest agent along with a TSA agent recognized the situation and came over and took my wife and luggage to the JetBlue ticketing counter alongside the line and told the JetBlue agent to issue to take our luggage as soon as they could.
1) No pilot available for 1 hour 2) no room for most passengers careyon in overhead—-> stowed below 3) when we landed we had to wait 45 min. Before docking at gate as gate was not ready
It was good. I prefer JB over other airlines.I just wish we had headphones for the films, but other than that - good.
The ride share experience in JFK is terrible. After traveling on a flight, then you need to take a subway to the last stop to get an uber or lyft. Unacceptable. Bad job JetBlue for permitting JFK and Port Authority to do this to your passengers.
Checking In on JetBlue site was impossible. It hung up on REAL ID. Even my Global Entry did not help. Luckily, on Kayak site it was a breeze. Entire flight the temperature was COLD! Otherwise the crew was great!
The flight was two hours late due to a computer fault and resulting maintenance. Nothing was offered as compensation beyond bottles of water during the time we were deplaned and waiting in the terminal.
Very pleasant flight attendants. Gate crew rather loud chatting with each other.
Four plus hour flight delay in New York caused us to take off after 11:30pm. We didn’t arrive at our hotel until five hours after check in. Started the trip off feeling exhausted.
It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.
Due to weather, my flight was delayed, further delayed, then canceled. I eventually got through to a support person who helped me find a different route out of MSP, but to get to DIA, they didn't want to, but eventually did help with the connection ticket purchase. But even this replacement flight was delayed time and time again, and I would have missed my connecting flights and I didn't want to get stuck in a layover city, so after 12 hours at the airport with two young boys who were very tired, we just cancelled our plans and spent the week at home, instead of Nana's.
I knew going into this that Frontier, being a low cost carrier, would be pretty bare bones and charge for most extras but this was made up for by the fact that the airplane was a reasonably new Airbus, every employee was great and best of all, Everett Washington is an amazing airport - thanks Frontier for flying there!!!
Seats were new and comfortable. Staff was fine. Missed my connection due to weather -which wasn’t their fault- but got no help at all. Gate staff sent me to customer service, which was and stayed unstaffed. Sign with QR code directed me to call or chat. Chat was useless. Call was returned after an hour. No itinerary offered by Frontier could get me home in less than 30 hours. Rebooked with another airline and got a partial refund that came to about 10 percent of what I paid to get home.
The experience was good. No frills but I got there safe and sound and on time.
As every law enforcement agency I could imagine surrounded the plane and we didn’t disembark for 2 hours and then had to stick around for another hour to go get our personal belongings after leaving them behind and being bused away from the plane, it was scary and inconvenient. We were given no information as to why this was happening. Lack of communication with passengers was disappointing.
Frontier Airlines was AWFUL. I was an hour early for my flight and the lady refused to check me in. I had to purchase a whole new ticket with a different airline.
Late, terrible communication, horrible planning of passenger seating until the literal last minute. One of the worst flying experiences of my life. Y'all suck
First of all, we never got on the connecting flight to Denver. They delayed our flight for two hours. If we would have gotten on that flight, we would have been stuck in Denver for 13 hours. So we re- routed our flight for a straight through flight to Oklahoma two days later. THEN, they delayed that flight for two hours. After that we were able to finally get on our flight and come home. Frontier Airlines - one of the worst airlines I have ever been on.
Terrible communication with weather delay, lost baggage, near impossible to reach customer service