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$95+ Cheap flights from Boston to Denver (BOS - DEN)

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 2/10. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — DEN
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
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Find cheap flights from Boston to Denver 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

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Boston Logan Intl to Denver Intl are usually found in January or April, booked 87 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from Boston to Denver

Cheapest flights from Boston to Denver
Explore the most affordable flight options available from Boston to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 23, 2025.

This JetBlue deal was found by Cheapflights users on 12/22. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/262:07 pmBOS - DEN
Nonstop4h 45mJetBlue
Sat 1/311:40 pmDEN - BOS
Nonstop3h 53mJetBlue
Deal found 12/22$277
This Expedia deal was found by Cheapflights users on 12/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2511:03 amBOS - DEN
1 stop13h 05mFrontier
Thu 1/16:00 amDEN - BOS
1 stop23h 23mFrontier
Deal found 12/22$278
This Frontier deal was found by Cheapflights users on 12/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2510:47 amBOS - DEN
1 stop13h 02mFrontier
Wed 12/3111:59 pmDEN - BOS
1 stop7h 53mFrontier
Deal found 12/21$304
This Delta deal was found by Cheapflights users on 12/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:10 amBOS - DEN
1 stop11h 03mDelta
Wed 1/711:38 amDEN - BOS
Nonstop3h 57mDelta
Deal found 12/21$317
This Expedia deal was found by Cheapflights users on 12/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2510:47 amBOS - DEN
1 stop13h 02mMultiple Airlines
Sun 12/2810:40 pmDEN - BOS
Nonstop3h 47mMultiple Airlines
Deal found 12/21$322
This American Airlines deal was found by Cheapflights users on 12/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/263:30 pmBOS - DEN
1 stop9h 40mAmerican Airlines
Sat 1/317:20 amDEN - BOS
1 stop7h 28mAmerican Airlines
Deal found 12/22$327
This Expedia deal was found by Cheapflights users on 12/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2511:03 amBOS - DEN
1 stop13h 05mFrontier
Mon 12/2912:14 amDEN - BOS
1 stop7h 28mFrontier
Deal found 12/22$328
This Frontier deal was found by Cheapflights users on 12/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/268:08 amBOS - DEN
1 stop12h 34mFrontier
Tue 3/1011:59 pmDEN - BOS
1 stop9h 42mFrontier
Deal found 12/21$331
This Expedia deal was found by Cheapflights users on 12/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2510:47 amBOS - DEN
1 stop13h 02mFrontier
Sat 12/2712:14 amDEN - BOS
1 stop7h 54mFrontier
Deal found 12/21$333
This Expedia deal was found by Cheapflights users on 12/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:45 pmBOS - DEN
Nonstop4h 52mMultiple Airlines
Wed 12/3111:59 pmDEN - BOS
1 stop7h 53mMultiple Airlines
Deal found 12/22$341

Find flight deals from Boston to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Denver (DEN). 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 December 23, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$178
(Priceline)

One-way from

$95
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$357

Good round-trip deal

$252 or less

Good one-way deal

$173 or less
Provider with most accurate pricing for Boston Logan Intl-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Denver Intl flights.
Search Deals
From Boston Logan Intl to Denver Intl
Search Deals
One-way flight from Boston Logan Intl to Denver Intl
Search Deals
High demand for flights, 3% potential price rise
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Boston Logan Intl to Denver Intl.
Search Deals
Price to beat on a one-way flight from Boston Logan Intl to Denver Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to Denver 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 December 23, 2025.
Use the filters below to find and compare flights from Boston to Denver that are best for you.

Fly from

Boston

Fly to

Denver

Route

Depart

Return

Price

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

Wed 2/25

6:00 am-8:37 pm

2 stops16h 37m

Denver Intl

Sun 3/1

11:25 pm-11:59 pm

1 stop22h 34m

$197

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

Fri 1/30

7:20 am-10:24 am

Nonstop5h 04m

Denver Intl

Tue 2/10

11:38 am-5:35 pm

Nonstop3h 57m

$197

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

Sat 1/31

3:15 pm-6:09 pm

Nonstop4h 54m

Denver Intl

Sat 2/7

5:51 pm-11:52 pm

Nonstop4h 01m

$197

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

Mon 2/2

9:59 am-12:45 pm

Nonstop4h 46m

Denver Intl

Tue 2/3

1:40 pm-7:33 pm

Nonstop3h 53m

$197

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

Fri 1/9

7:20 am-10:24 am

Nonstop5h 04m

Denver Intl

Tue 1/13

11:38 am-5:35 pm

Nonstop3h 57m

$197

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

Tue 2/3

9:59 am-12:45 pm

Nonstop4h 46m

Denver Intl

Wed 2/4

1:40 pm-7:33 pm

Nonstop3h 53m

$197

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

Fri 1/23

11:17 am-2:12 pm

Nonstop4h 55m

Denver Intl

Sun 1/25

8:01 am-2:02 pm

Nonstop4h 01m

$197

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

Wed 1/14

7:20 am-10:24 am

Nonstop5h 04m

Denver Intl

Wed 1/21

11:38 am-5:35 pm

Nonstop3h 57m

$197

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

Fri 1/9

9:59 am-12:45 pm

Nonstop4h 46m

Denver Intl

Tue 1/13

1:40 pm-7:33 pm

Nonstop3h 53m

$197

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

Sun 1/18

7:20 am-10:24 am

Nonstop5h 04m

Denver Intl

Sun 1/25

11:38 am-5:35 pm

Nonstop3h 57m

$197

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 20 results
1
2

Compare providers for flights from Boston to Denver

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 Boston to Denver in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
Trip.comPrice Accuracy2 starsTrust 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 Boston-Denver flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Boston-Denver flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from Boston-Denver flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-Denver flights, Cheapflights users trust CheapOair the most. CheapOair 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 Boston-Denver 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 Boston to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Boston 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 Boston to Denver

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

Use this chart to determine the optimal time to book a round-trip flight from Boston to Denver. Price data was last updated on December 19, 2025.

The best time to book flights from Boston to Denver is 87 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 Boston to Denver?

Currently, November is the cheapest month in which you can book a flight from Boston to Denver (average of $87). Flying from Boston to Denver in September is currently the most expensive (average of $153). 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 BOS to DEN?

Find hourly flight availability from Boston to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 23, 2025.

One of the essential ways to save on airfare from Boston to Denver is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 27% on airfare.

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

Use this chart to determine the cheapest time to fly round-trip from Boston to Denver. Price data was last updated on December 20, 2025.

Travelers seeking maximum savings on their Boston to Denver flight should consider departing on Thursday 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 Boston to Denver 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 Boston to Denver trip
Airports
BOS

Use the FlyLogan App to pre-order food and save time at BOS. Most restaurants participate, making it a convenient option.

Read more about BOSBy Paul Rubio
DEN

Take the A Line train from DEN to Union Station for a quick, 37-minute ride into downtown Denver. It runs every 15 minutes.

Read more about DENBy Emily Zemler
Our travel experts
Paul Rubio

Paul Rubio

Expert on BOS

Paul Rubio

Paul Rubio

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 Zemler

Emily Zemler

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 Denver

Get insights into the airlines that provide service to Denver. 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 Denver. Reviews last updated December 23, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines from Boston to Denver have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,253 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

Comfort

8.0

Crew

8.6

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
4,253 reviews
Southwest
8.0
Very good
4,253 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

Comfort

8.0

Crew

8.6

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
8,014 reviews
Southwest
8.0
Very good
4,253 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

Comfort

8.0

Crew

8.6

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
9,106 reviews
Southwest
8.0
Very good
4,253 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

Comfort

8.0

Crew

8.6

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
2,898 reviews
Southwest
8.0
Very good
4,253 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

Comfort

8.0

Crew

8.6

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
5.8
Fair
3,074 reviews
Southwest
8.0
Very good
4,253 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

Comfort

8.0

Crew

8.6

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 Boston to Denver. 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 Boston to Denver?

    Booking a flight from Boston Logan Intl (BOS) to Denver Intl (DEN) is your only option if you wish to fly from Boston to Denver. On a typical day, there are 13 flights from Logan Intl to Denver Intl, all of which are around 4h 28m for a nonstop flight. You can also purchase a plane ticket from 7 airlines when you book a flight from Logan Intl to Denver.

  • How popular is this Boston to Denver flight route?

    This flight path from Boston Logan Intl to Denver Intl was viewed by 87 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 Boston to Denver?

    Delta and United Airlines can get you from Boston to Denver in just under 4h 54m. Your travel time will be generally consistent. Boston and Denver are separated by a distance of 1748 mi. Most flights are nonstop.

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

    Flying on Frontier is currently your cheapest option to Denver, with prices starting at $95. Additional round-trip tickets that might be worth considering are offered by Delta and JetBlue, with the lowest prices starting at $108 and $119, respectively. Frontier is currently priced 70% below the average price you’ll pay for this route.

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

    $53 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on American Airlines and JetBlue, with prices starting from $93 and $94, respectively.

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

    Before booking your flight to Denver from Boston, check out the most reliable airlines to get you to your destination on time: Icelandair (92%), ITA Airways (87%), Qatar Airways( 87%).

  • What are the cheapest flights from Boston to Denver?

    Looking for the cheapest flight from Boston to Denver? While on average our users pay $997, our data indicates the cheapest price to be $88. The most popular route (Boston Logan Intl - Denver Intl), is priced around $147.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Boston to Denver 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 Boston to Denver?

    Currently, November is the cheapest month in which you can book a flight from Boston to Denver (average of $87). Flying from Boston to Denver in September is currently the most expensive (average of $153). 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 Denver?

Book flights to Denver if you plan to visit one of these locations
Thornton
Black Hawk
Broomfield
Westminster
Winter Park
Golden
Greeley
Lone Tree
Lakewood
Wheat Ridge
Cripple Creek
Silverthorne
Central City
Frisco
Manitou Springs
Fort Morgan
Brighton
Longmont
Idaho Springs
Evergreen

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Boston to Denver

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Boston to Denver

Discover the top 7 airlines that operate flights from Boston to Denver. 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 December 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$108Average$198FlexibilityNo cancel feeOn-time62%
DeltaCheapest$117Average$299FlexibilityNo cancel feeOn-timeN/A
Sun Country AirCheapest$144Average$314FlexibilityNo cancel feeOn-time83%
JetBlueCheapest$146Average$301FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$180Average$319FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$196Average$371FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$196Average$312FlexibilityNo cancel feeOn-time71%

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