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$108+ Cheap flights from Denver to Boston (DEN - BOS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/5. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BOS
Mar 21 — Mar 281
Sat 3/21
Sat 3/28
1 adult, Economy
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Find cheap flights from Denver to Boston with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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Cheapflights Tip: The best prices from Denver Intl to Boston Logan Intl are usually found in January or March, booked 67 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from Denver to Boston

Cheapest flights from Denver to Boston
Explore the most affordable flight options available from Denver to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 19, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/611:59 pm
DEN
-
BOS
1 stop9h 46m
Frontier
Tue 4/1412:55 pm
BOS
-
DEN
1 stop12h 08m
Frontier
Deal found 2/15$175
This SmartFares deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/611:15 pm
DEN
-
BOS
Nonstop3h 52m
JetBlue
Tue 4/1412:49 pm
BOS
-
DEN
Nonstop4h 41m
JetBlue
Deal found 2/15$177
This Kiwi.com deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/87:43 pm
DEN
-
BOS
2 stops26h 16m
Multiple Airlines
Tue 4/1412:55 pm
BOS
-
DEN
1 stop12h 08m
Multiple Airlines
Deal found 2/15$185
This Kiwi.com deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/121:09 pm
DEN
-
BOS
1 stop9h 42m
Frontier
Wed 5/1312:55 pm
BOS
-
DEN
1 stop12h 08m
Frontier
Deal found 2/18$186
This Cheapflightsfares deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/159:25 am
DEN
-
BOS
1 stop22h 56m
Frontier
Mon 5/1811:16 am
BOS
-
DEN
1 stop13h 43m
Frontier
Deal found 2/18$189
This Priceline deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/711:59 pm
DEN
-
BOS
1 stop9h 46m
Frontier
Thu 4/3012:35 pm
BOS
-
DEN
1 stop12h 28m
Frontier
Deal found 2/15$190
This Kiwi.com deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/511:59 pm
DEN
-
BOS
2 stops22h 00m
Multiple Airlines
Tue 5/1912:55 pm
BOS
-
DEN
1 stop12h 08m
Multiple Airlines
Deal found 2/18$192
This Flysmarter deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/3011:09 pm
DEN
-
BOS
Nonstop3h 48m
JetBlue
Tue 4/77:35 pm
BOS
-
DEN
Nonstop4h 42m
JetBlue
Deal found 2/18$193
This Cheapflightsfares deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/210:34 pm
DEN
-
BOS
Nonstop3h 56m
JetBlue
Tue 6/96:54 pm
BOS
-
DEN
Nonstop4h 45m
JetBlue
Deal found 2/18$196
This deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/294:25 pm
DEN
-
BOS
Nonstop3h 56m
JetBlue
Wed 5/612:49 pm
BOS
-
DEN
Nonstop4h 41m
JetBlue
Deal found 2/16$197
This Kiwi.com deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/151:09 pm
DEN
-
BOS
1 stop9h 42m
Multiple Airlines
Mon 4/205:23 pm
BOS
-
DEN
1 stop19h 07m
Multiple Airlines
Deal found 2/17$198

Find flight deals from Denver to Boston

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Boston (BOS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$175
(Kiwi.com)

One-way from

$108
(Trip.com)

Popular in

June

Cheapest in

January

Average price

$320

Good round-trip deal

$232 or less

Good one-way deal

$169 or less
Provider with most accurate pricing for Denver Intl-Boston Logan Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Boston Logan Intl flights.
Search Deals
From Denver Intl to Boston Logan Intl
Search Deals
One-way flight from Denver Intl to Boston Logan Intl
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($9 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($2 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from Denver Intl to Boston Logan Intl.
Search Deals
Price to beat on a one-way flight from Denver Intl to Boston Logan Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver to Boston that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 19, 2026.
Use the filters below to find and compare flights from Denver to Boston that are best for you.

Fly from

Denver

Fly to

Boston

Route

Depart

Return

Price

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Tue 7/21

3:57 pm-9:59 pm

Nonstop4h 02m

Boston Logan Intl

Wed 7/29

4:55 pm-7:43 pm

Nonstop4h 48m

$207

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Wed 3/18

5:59 pm-11:53 pm

Nonstop3h 54m

Boston Logan Intl

Wed 3/25

7:00 am-10:00 am

Nonstop5h 00m

$207

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Wed 3/25

11:35 am-5:32 pm

Nonstop3h 57m

Boston Logan Intl

Sat 3/28

7:30 am-10:24 am

Nonstop4h 54m

$210

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Thu 3/19

7:05 pm-12:50 am

Nonstop3h 45m

Boston Logan Intl

Mon 3/23

5:05 pm-7:50 pm

Nonstop4h 45m

$210

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Wed 5/27

4:45 pm-12:59 am

1 stop6h 14m

Boston Logan Intl

Tue 6/2

7:45 am-10:19 am

Nonstop4h 34m

$212

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Thu 5/28

11:59 pm-5:58 am

Nonstop3h 59m

Boston Logan Intl

Mon 6/1

8:05 pm-12:53 am

1 stop6h 48m

$217

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Thu 3/26

11:59 pm-5:51 am

Nonstop3h 52m

Boston Logan Intl

Mon 3/30

6:33 pm-11:44 pm

1 stop7h 11m

$217

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Sat 5/23

10:34 pm-4:30 am

Nonstop3h 56m

Boston Logan Intl

Sat 5/30

6:54 pm-9:39 pm

Nonstop4h 45m

$220

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Thu 3/5

4:25 pm-12:35 am

1 stop6h 10m

Boston Logan Intl

Mon 3/9

4:46 pm-7:39 pm

Nonstop4h 53m

$220

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Mon 3/30

7:05 pm-12:50 am

Nonstop3h 45m

Boston Logan Intl

Sun 4/5

5:00 am-7:45 am

Nonstop4h 45m

$227

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/15

Showing 1-10 of 22 results
1
2
3

Compare providers for flights from Denver to Boston

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Denver to Boston in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
Trip.comPrice Accuracy1 starTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
BudgetAirPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Denver-Boston flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Denver-Boston flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Denver-Boston flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Denver-Boston flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Denver-Boston flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Denver to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from Denver with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from Denver to Boston. Price data was last updated on February 18, 2026.

The best time to book flights from Denver to Boston is 67 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Denver to Boston?

Currently, August is the cheapest month in which you can book a flight from Denver to Boston (average of $65). Flying from Denver to Boston in February is currently the most expensive (average of $166). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from DEN to BOS?

Find hourly flight availability from Denver to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 19, 2026.

Unlike at noon, when flights are generally more expensive, you can save up to 24% on flights from Denver to Boston by exploring options for tickets in the evening.

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

Use this chart to determine the cheapest time to fly round-trip from Denver to Boston. Price data was last updated on February 7, 2026.

Travelers seeking maximum savings on their Denver to Boston flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for Denver to Boston flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Denver to Boston trip
Our travel experts
Paul Rubio

Paul Rubio

Expert on BOS

Travel journalist and photographer Paul Rubio is a Miami native (and current resident), who has lived in nine countries and traveled to 137. He is an expert in luxury travel, eco-travel, loyalty programs, hotels, airports and airlines. He is a contributing editor at AFAR, Condé Nast Traveler, LUXURY Magazine, and Palm Beach Illustrated.

Read more
Emily Zemler

Emily Zemler

Expert on DEN

Emily is a freelance writer and book author based in London covering entertainment and travel. Her work has appeared in Los Angeles Times, Observer, and Conde Nast Traveler She has ventured to more than 40 countries and all seven continents, always in search of a great art museum. She has written extensively about hotels, luxury travel, and aviation.

Read more

Reviews of airlines servicing Boston

Get insights into the airlines that provide service to Boston. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Boston. Reviews last updated February 19, 2026.
Get a feel of what it's like to fly with Southwest, Delta, and United Airlines from Denver to Boston by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,295 reviews

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,295 reviews
Southwest
8.0
Very good
4,295 reviews

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,213 reviews
Southwest
8.0
Very good
4,295 reviews

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,323 reviews
Southwest
8.0
Very good
4,295 reviews

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
JetBlue
7.2
Good
2,900 reviews
Southwest
8.0
Very good
4,295 reviews

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.7
Fair
3,048 reviews
Southwest
8.0
Very good
4,295 reviews

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from Denver to Boston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Denver to Boston?

    If you wish to fly to Boston from Denver, then you need to book flights from Denver Intl to Boston Logan Intl. There are 13 flights from Denver Intl (DEN) to Logan Intl (BOS) per day to choose from. Flights to Boston from Denver Intl are available from 6 different airlines, which means you should have some options if you want to compare airfare deals. 3h 45m is how long a nonstop flight from Denver to Boston Logan Intl typically takes.

  • How popular is this Denver to Boston flight route?

    This flight path from Denver Intl to Boston Logan Intl was viewed by 27 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Denver to Boston?

    Airlines like United Airlines, Delta, and Southwest fly from Denver to Boston in about 3h 45m. The time it takes to get you to your destination is usually consistent. The distance from Denver to Boston is about 1748 mi. Most flights are nonstop.

  • What are the cheapest airlines flying from Denver to Boston round-trip?

    Cheapflights users have booked flights from Denver to Boston round-trip from $101. Other airlines that can offer you cheap pricing are JetBlue, from $118, and Delta, from $120. Frontier is priced at 67% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Denver to Boston one-way?

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $94. However, be on the lookout for offers from Southwest and JetBlue, as they are both options that can get you from Denver to Boston for a low price.

  • What are the most reliable airlines from Denver to Boston?

    No one likes to see their flight delayed. When booking a flight from Denver to Boston consider choosing Qatar Airways (100%), ITA Airways (95%) or United Airlines (88%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Denver to Boston?

    Looking at all options, your cheapest flight can be booked for $104. While the most popular route (Denver Intl - Boston Logan Intl) can be booked for $177 on average, our data indicates $632 when flying from Denver to Boston.

  • Can I find deals for flights from Denver to Boston that include hotel bookings?

    Yes. In addition to deals on Denver to Boston flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Denver to Boston?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Denver to Boston.

  • Can I find deals for business class flights from Denver to Boston?

    Yes. Cheapflights offers flight deals from Denver to Boston by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Denver to Boston?

    Currently, August is the cheapest month in which you can book a flight from Denver to Boston (average of $65). Flying from Denver to Boston in February is currently the most expensive (average of $166). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Medford
Cambridge
Hampton Beach
Watertown
Seekonk
Brockton
Concord
Seabrook
Cranston
Lincoln
Warwick
Smithfield
Peabody
Quincy
York Beach
Londonderry
Swansea
Old Orchard Beach
Waltham
Lowell

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 6 airlines flying from Denver to Boston

Discover the top 6 airlines that operate flights from Denver to Boston. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$101Average$219FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$118Average$281FlexibilityNo cancel feeOn-time62%
DeltaCheapest$120Average$280FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$158Average$315FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$175Average$362FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$185Average$333FlexibilityNo cancel feeOn-time63%

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