DEN - BOS

$119 Find Cheap Flights from Denver to Boston

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to Boston departing on 4/18. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Boston

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Boston.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Boston.
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$183
Typical prices: $389-$221
Southwest
Tue 4/21Tue 4/28
DEN - BOS • 1 stop
Cheapest non-stop
$190
Typical prices: $405-$239
Southwest
Mon 5/4Tue 5/12
DEN - BOS • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
JetBlue offers free Wi-Fi and live TV on flights.
Take the Silver Line from BOS for a free ride to downtown.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $183 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with Delta, JetBlue and others. Average duration is 3h 57m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Avoid delays
Most punctual • 82% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $202 (round-trip)
Shortest trip • 5h 30m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 27% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 13% price drop
Most popular
Good to know
Good to know
+1
+1
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Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Boston!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Denver to Boston (DEN-BOS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver to Boston that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Denver to Boston

Tue, Apr 21 - Tue, Apr 28
Southwest Logo
6:35 am - 4:05 pm
DEN
-
BOS
7h 30m
1 stop
Southwest Logo
5:35 am - 8:05 am
BOS
-
DEN
4h 30mnonstop
$183Southwest
Sat, Apr 18 - Wed, Apr 22
Frontier Logo
1:09 pm - 1:31 am
DEN
-
BOS
10h 22m
1 stop
Frontier Logo
12:55 pm - 10:29 pm
BOS
-
DEN
11h 34m
1 stop
$184Frontier
Tue, Apr 28 - Thu, Apr 30
Frontier Logo
1:09 pm - 1:31 am
DEN
-
BOS
10h 22m
1 stop
Frontier Logo
12:31 pm - 11:59 pm
BOS
-
DEN
13h 28m
1 stop
$185Frontier
Sat, May 2 - Wed, May 6
Frontier Logo
11:59 pm - 11:25 am
DEN
-
BOS
9h 26m
1 stop
Frontier Logo
8:44 am - 2:32 pm
BOS
-
DEN
7h 48m
1 stop
$186Frontier
Tue, Apr 21 - Tue, Apr 28
Southwest Logo
10:55 am - 10:40 pm
DEN
-
BOS
9h 45m
2 stops
Southwest Logo
5:35 am - 8:05 am
BOS
-
DEN
4h 30mnonstop
$188Southwest
Mon, May 4 - Tue, May 12
Southwest Logo
7:00 pm - 12:50 am
DEN
-
BOS
3h 50mnonstop
Southwest Logo
5:35 am - 8:05 am
BOS
-
DEN
4h 30mnonstop
$190Southwest
Mon, May 4 - Tue, May 12
Southwest Logo
7:00 pm - 12:50 am
DEN
-
BOS
3h 50mnonstop
Southwest Logo
5:35 am - 8:05 am
BOS
-
DEN
4h 30mnonstop
$191Southwest
Mon, Apr 13 - Wed, Apr 15
Multiple Airlines Logo
11:31 pm - 5:19 am
DEN
-
BOS
3h 48mnonstop
Multiple Airlines Logo
6:00 am - 12:09 pm
BOS
-
DEN
8h 09m
1 stop
$194Multiple Airlines
Tue, Apr 21 - Tue, Apr 28
Southwest Logo
10:55 am - 10:40 pm
DEN
-
BOS
9h 45m
2 stops
Southwest Logo
6:20 am - 11:15 am
BOS
-
DEN
6h 55m
1 stop
$196Southwest
Thu, Apr 9 - Tue, Apr 14
JetBlue Logo
11:31 pm - 5:19 am
DEN
-
BOS
3h 48mnonstop
JetBlue Logo
8:20 pm - 11:04 pm
BOS
-
DEN
4h 44mnonstop
$197JetBlue
Booking Insights

KAYAK's insights & trends for Denver to Boston flights

Get data-powered insights and trends into flights from Denver to Boston to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Denver to Boston?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Denver to Boston departing in April.

What’s the cheapest day of the week to fly from Denver to Boston?

The average price of all round-trip flights from Denver to Boston clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Boston on a Wednesday, as we generally find the cheapest rates on that day for this route. On the other hand, Monday is the most expensive day to fly from Denver to Boston. For your return ticket, we recommend flying on a Tuesday and avoiding Sundays for the best deals.

What is the cheapest month to fly from Denver to Boston?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver to Boston, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Denver to Boston is January, where tickets cost $277 (return) on average. On the other hand, the most expensive months are March and February, where the average cost of round-trip tickets is $337 and $334 respectively.

Can I save money by flying with a layover from Denver to Boston?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $325 on average.

How far in advance should I book a flight from Denver to Boston?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Denver to Boston, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Denver to Boston, you should book around 4 weeks before departure, which saves you about 27% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

Expert advice

Expert advice for your flight from Denver to Boston

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines and Delta

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Harriet Baskas

Harriet Baskas

Expert on JetBlue and DEN

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Blane Bachelor

Blane Bachelor

Expert on Southwest and BOS

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

KAYAK's tips to save more on a Denver to Boston flight

When planning a flight from Denver to Boston, there are several strategies to consider for saving money. Generally, Wednesday is the cheapest day of the week to fly, and January is the cheapest month.

Advance Booking: Book your flight at least 57 days in advance for the best prices.

Cheapest Airline: Consider flying with Frontier, as it is generally the cheapest airline for this route.

Direct Flight: Opt for a direct flight, as it is significantly cheaper than flights with layovers.

Specific Route: Stick to the direct route from Denver International to Boston Logan International for the best deal.

Off-Peak Travel: Consider traveling in January for the lowest monthly rates.

AI-powered; AI can make mistakes.

Good to know

Low seasonJanuary
Cheapest flight$119
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly with an average 2% increase in price.
Flight from Denver to Boston

When to book flights from Denver to Boston

Are your dates flexible? Find out the best times to travel from Denver to Boston based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Denver to Boston

  • What is the cheapest flight from Denver to Boston?

    In the last 3 days, the lowest price for a flight from Denver to Boston was $119 for a one-way ticket and $183 for a round-trip.

  • Do I need a passport to fly between Denver and Boston?

    A passport is not required to fly from Denver to Boston.

  • Which airports will I be using when flying from Denver to Boston?

    Denver and Boston are both served by 1 main airport. You will leave Denver from Denver Intl and will be arriving at Boston Logan Intl.

  • Which airlines offer Wi-Fi service onboard planes from Denver to Boston?

    JetBlue, Delta, and American Airlines offer inflight Wi-Fi service on the Denver to Boston flight route.

  • Which aircraft models fly most regularly from Denver to Boston?

    The Airbus A321neo is the aircraft model that flies most regularly on the Denver to Boston flight route.

  • Which airline alliances offer flights from Denver to Boston?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Denver and Boston, with oneworld being the most commonly used for this route.

  • On which days can I fly direct from Denver to Boston?

    There are nonstop flights from Denver to Boston on a daily basis.

  • Which is the best airline for flights from Denver to Boston, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Denver to Boston are Southwest and Delta. With an average price for the route of $349 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $292 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Denver to Boston?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Denver to Boston.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Denver to Boston?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boston from Denver is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Denver to Boston?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Boston with an airline and back to Denver with another airline. Booking your flights between Denver and BOS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Denver to Boston?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Boston from Denver up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Denver to Boston

  • Looking for a cheap flight? 25% of our users found flights on this route for $192 or less one-way and $267 or less round-trip.

Prefer to fly direct from Denver to Boston?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Denver Intl to Boston Logan Intl.
Find which airlines fly direct from Denver Intl Airport to Boston Logan Intl Airport, which days they fly and book direct flights.

Direct departures

Denver Intl to Boston Logan Intl

Monday

Delta,JetBlue,Southwest, +1 more

Delta,JetBlue, +2 more

Tuesday

Delta,JetBlue,Southwest, +1 more

Delta,JetBlue, +2 more

Wednesday

Delta,JetBlue,Southwest, +1 more

Delta,JetBlue, +2 more

Thursday

Delta,JetBlue,Southwest, +1 more

Delta,JetBlue, +2 more

Friday

Delta,JetBlue,Southwest, +1 more

Delta,JetBlue, +2 more

Saturday

Delta,JetBlue,Southwest, +1 more

Delta,JetBlue, +2 more

Sunday

Delta,JetBlue,Southwest, +1 more

Delta,JetBlue, +2 more

See more direct flights

Direct returns

Boston Logan Intl to Denver Intl

Monday

Delta,JetBlue,Southwest, +1 more

Delta,JetBlue, +2 more

Tuesday

Delta,JetBlue,Southwest, +1 more

Delta,JetBlue, +2 more

Wednesday

Delta,JetBlue,Southwest, +1 more

Delta,JetBlue, +2 more

Thursday

Delta,JetBlue,Southwest, +1 more

Delta,JetBlue, +2 more

Friday

Delta,JetBlue,Southwest, +1 more

Delta,JetBlue, +2 more

Saturday

Delta,JetBlue,Southwest, +1 more

Delta,JetBlue, +2 more

Sunday

Delta,JetBlue,Southwest, +1 more

Delta,JetBlue, +2 more

See more direct flights

Reviews of the top 5 airlines serving from Denver to Boston

 
See real verified KAYAK customer reviews for airlines flying from Denver to Boston. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Denver to Boston? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4331 reviews
8.6Crew
7.5Entertainment
8.1Boarding
8.0Comfort
7.0Food
Airline reviews

Great flight. Good snacks and drinks. Grateful it was free. The flight from Nashville to louisville, i think her name was Tracy (not sure that's right) super awesome, nice and cheerful. She really enjoyed being at work today! She was the person who scanned the boarding pass on flight wn941. She should be recommended for a raise !

10.0 ExcellentGwen, Mar 2026
DAL - BNA
Read more Southwest reviews

Great flight. Good snacks and drinks. Grateful it was free. The flight from Nashville to louisville, i think her name was Tracy (not sure that's right) super awesome, nice and cheerful. She really enjoyed being at work today! She was the person who scanned the boarding pass on flight wn941. She should be recommended for a raise !

I liked it better when you were truer to your roots Am paying more for less fun

Southwest was greaat! The most expensive but the least upsetting for those we were flying to see.

I flew twice this week on Southwest, was delayed over 2 hours both ways. From Pittsburgh to Chicago it was due to weather but the gate agents, pilot etc were great at updating everyone. Today from Midway to Pittsburgh the plane had come from an international location, kept getting delayed, no information was given until we were delayed for the third time. It was ridiculous, whoever scheduled that plane to fly to Pittsburgh after didn’t consider a lot of things.

Boarding was easy. The seats are small and fairly uncomfortable

I was supposed to be on a later flight. When I showed up at the gate, the woman working there was extremely helpful getting moved up to this earlier flight.

We had a 5 hour delay on the tarmac in Baltimore

Long layover between flights to Long Island from BWI - need better coordination between flights

I elected to pay for the upgrades and found very little difference

The new seating arrangement is so over priced for what you get.

I took seat 15A in anticipation of window seat, there is no window.

The first class flight attendant was awful to everyone. Very rude; no customer service. She should not be working in first class.

Snacks and included beverages were appreciated. Boarding went smoothly. Plenty of overhead bin space. Seats get very uncomfortable after a couple of hours. After waiting 10 painful minutes for my walker, a very nice Delta guest agent pushed me in a wheelchair to the gate. It was finally delivered to me after another 15 minutes . Our checked bag was on the carousel long b4 I was able to retrieve it. Fortunately it was still there but somewhere along the way the straps we used to secure it were removed and and were not reattached. Wish I had made note of the agents name.

It was fine. 55 minute flight. No snacks or beverage service offered. Boarding went smoothly and my walker was waiting for me on the jet way.

Smaller plane for a longer flight than my first one. Doesn’t make sense.

The cabin temperature was nice and cool. The wifi was not working.

Flight late, the waited for a long time for “personal” to arrive at gate to dock the plane in Rochester. So annoying. This flight was expected, why aren’t personel available for the jet bridge?

As previously noted, this flight was great: departure was timely, the crew was friendly and attentive, and wifi connectivity was seamless. In particular, I appreciated that the flight attendant just told me to stow the laptop right before takeoff/landing, and trusted me to do so (which I did!).

Kayak botched up the booking, i had to call delta and fix. In the process Delta failed to honor my comfort plus seat assignment that i had previously.

Entertainment is ok! Boarding and seat with zone is terrible. I paid for the seats but you didn’t give me what I paid for which is exit isles.

Flight left on time and we arrived 25 minutes early! There was a gate available when we arrived so early on a busy Sunday afternoon! Flight attendants came around twice with the drinks cart.

I like flying first class, and United has a nice one

Sitting on the runway after we land for almost two hours! Not sure if we should blame United or Just Dumpy Vance.

United airlines has the best customer experience from booking to arrival. I always fly United airlines. The mileage program is excellent

Flight was late - I was downgraded from first class to coach

Crew seemed a bit cranky. No seatback screens. But boarding was efficient and on time and we arrived early.

See previous note about the passenger in Denver who threw my husband's bag out of the overhead bin in order to maker room for his own. And the flight attendant back up the new passenger.

Terrible. They wouldn't allow me on my flight on the 14th..

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

Onboard functioning wide-variety entertainment on a budget and having an open pantry is nice. Seats are not comfortable but go provide plenty of legroom for a 6'2" 260lbs man.

Even though the weather made a lot of flights become cancelled Jet Blue made the flight that was supposed to leave at 9 pm and we left at 12:15 am and I was so grateful- Thanks to the Senior Jet Blue Staff who made those decisions

Worst customer service ever experienced on the planet, dirty plane, no communication, and severe delays

Flight cancelled 2 hours prior to boarding. No explanation. No refunds.

Delayed by 1.5 hours. Terrible apologies, half hearted at best. It will be a LONG time until i book w Jet Blue again. Very disappointed.

My check in was stressful. I somehow lost my seat from my original booking, the plane showed no availability/no seat when it was time to check-in. I called and was instructed to try to get a seat at the airport. I asked if it was a full flight and the travel agent said the site showed some seating but was not able to secure one for me. Why not? On my way to the airport the app finally revealed one available seat towards the back of the aircraft that I was able to book. It ended up being an overbooked flight, so glad I wasn't stuck.

Flights with JetBlue from San Diego to Boston are a miserable experience. The flight was delayed about 1.5 hours due to “weather” supposedly but the flights for other airlines left on time so it just have been some kind of weather that only affects JetBlue. I had a small carry on - purse. The crew stored it in a bin 2 rows down from me because they were using the bin next to my seat for other people’s stuff. The TV screen in the emergency row seats does not work. It just was awful from start to finish. When we landed, we had to sit inside the plane for a very long time because the plane had to be moved to a different gate.

They made me check my bag and I didn't need to as there was overhead space available. I paid for a seat towards the front of the plane and it didn't recline. I requested a refund and they declined to give me one.

I have to congratulate Kayak (and Dylan the Chatdeal agent) because because when we decided extended our trip in Florida by two days, there were many direct flights oprions back to Boston available on the Friday we wanted to fly on the JetBlue website, but once I canceled the original JetBlue flight on their website, those direct return options disappeared immediatley! I think it's a game JetBlue plays. . Luckily, I checked Kayak and they had a direct flight that wasn't appearing on JetBlue's website and so I booked it, and we were able to fly home direct through the Kayak booking when JetBlue was offering nothing (even though I have been a True Blue member for 20 years, and also am a Mosaic member). So much for loyalty- their algorithm for booking is like a shell game. JetBlue used to be a good company but now they're worse than anyone. Also I was originally booked this trip to Florida, two months before the departure date, I booked the trip on JetBlue's website and then after the payment part, they said there was a problem and that I needed to do the booking again, so when I immediately went to rebook , the price had gone up 30%! I called them and it sounded like they had heard this so many times before and the guy told me to check back in 10 minutes and the price would be back to where it was when I was booking- it but it never was. How could the price go up 30% in one minute two months before the flight???? They're playing a game with their customers. Anyways, I booked a cheaper flight then at a less convenient time. So fast forward two months the night before the 7 AM flight, they sent me an email at midnight when I was sleeping to let me know that my flight at 7 AM had been canceled. The only thing they offered was a flight that night from from a different airport (Providence) to a different airport in Florida (West Palm Beach) or a flight two days later. No compensation, nothing. They couldn't of tried to get another plane to the Boston airport? They had all night to do it. I passed on their ridiculous options and flew with Delta and it was a great experience. Of course, I had to pay a lot more booking on the same day, but JetBlue doesn't care. I put in a lengthy complaint with the agent who assured me someone would get back to me by email within three days and I haven't heard a thing. JetBlue used to be a good company but now they're among the worst. The only thing they still have is decent legroom, but the corporate bean counters will probably start taking that away too.

We were made to wait in the airport for six hours for a flight that was ultimately canceled.

The crew acted like they had never done this and kept barking passive aggressive orders at people. + the security line + the delay + sitting on the tarmac for 2 hours + none of the apps or signage updating with correct times

More inflight connection. And leg space is horrible. And the paying for baggage I'd ridiculous!!!

My flight was originally from SAT to MCO connecting from MCO to ORD. We got diverted to ATL and than Frontier staff there was sooo un helpful first they said they couldn’t give us any accommodation since our flight first got delayed that cancelled and now it’s 221am and I am still in ATL since they said they need to create a new flight my final destination is ORD and I have been delayed twice and cancelled. With no real help the frontier app didn’t work no email updates over all such a horrible experience

There's no seats that lean back with little leg space i wad uncomfortable the entire flight. Your charges for extra baggage is despicable and costly!!

Remind customers of the need to have passport or new ID for boarding.

Flight was canceled. Most upsetting was message from Kayak, stating that the flight was canceled and click with Kayak for details regarding rebook, refund details. THERE'S NO INFORMATION PROVIDED BY KAYAK EXCEPT THAT FLIGHT IS CANCELED. AND NOW THIS SURVEY TO FIND OUT HOW WAS THE FLIGHT !!!!!!!

The flight never took off and we spent 7 hours at the airport

Gate not determined until I got to the airport - hard to plan the trip to the airport.

Our flight was canceled. I will never use Kayak nor Frontier for travel again. The entire experience was a headache.

Frontier.. nickel and dime add-ons. Flight late, on time, late again, last minute gate change, arrival gate required a shuttle to the terminal. They sure keep you guessing.. if you like a little chaos and airport anxiety, this is the airline for you!

Everything you need to know for your flight from Denver to Boston

Other airlines flying from Denver to Boston

Flights from the other most popular airlines that fly from Denver to Boston according to KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability are not guaranteed.