Boston

$109+ Cheap flights from Colorado to Boston (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 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BOS
Aug 23 — Aug 301
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Cheap flight deals from Colorado to Boston

Keep the following information in mind while searching for Colorado to Boston flight deals. Data was last updated August 18, 2025.

Round-trip from

$187
(FlightHub)

One-way from

$109
(United Airlines)

Popular in

December

Cheapest in

January

Average price

$327

Good round-trip deal

$231 or less

Good one-way deal

$167 or less
From Colorado to Boston Logan Intl
One-way flight from Colorado to Boston Logan Intl
High demand for flights, 5% potential price rise
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Average for round-trip flights in August 2025
Price to beat on a round-trip flight from Colorado to Boston Logan Intl.
Price to beat on a one-way flight from Colorado to Boston Logan Intl.

Find flight deals from Colorado to Boston

Cheapest flights from Colorado to Boston
Explore the most affordable flight options available from Colorado to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

This FlightHub deal was found by Cheapflights users on 8/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3012:16 amDEN - BOS
1 stop30h 12mFrontier
Mon 11/312:20 pmBOS - DEN
1 stop7h 22mFrontier
Deal found 8/18$187
This Frontier deal was found by Cheapflights users on 8/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/58:35 amDEN - BOS
2 stops21h 08mFrontier
Mon 9/1512:59 pmBOS - DEN
1 stop10h 32mFrontier
Deal found 8/18$190
This Priceline deal was found by Cheapflights users on 8/18. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/412:59 amDEN - BOS
1 stop6h 59mFrontier
Mon 9/812:59 pmBOS - DEN
1 stop10h 32mFrontier
Deal found 8/18$191
This FlightHub deal was found by Cheapflights users on 8/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/106:01 pmDEN - BOS
1 stop12h 42mFrontier
Sun 9/149:38 amBOS - DEN
1 stop25h 19mFrontier
Deal found 8/18$192
This Frontier deal was found by Cheapflights users on 8/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2512:25 pmDEN - BOS
2 stops17h 11mFrontier
Fri 10/3112:20 pmBOS - DEN
1 stop7h 22mFrontier
Deal found 8/17$193
This Frontier deal was found by Cheapflights users on 8/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/612:59 amDEN - BOS
1 stop6h 59mFrontier
Sun 9/218:47 amBOS - DEN
1 stop14h 01mFrontier
Deal found 8/16$194
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/87:48 pmDEN - BOS
1 stop24h 59mMultiple Airlines
Mon 9/225:50 amBOS - DEN
1 stop29h 24mMultiple Airlines
Deal found 8/16$195
This Frontier deal was found by Cheapflights users on 8/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/106:01 pmDEN - BOS
1 stop12h 42mFrontier
Fri 9/2612:59 pmBOS - DEN
1 stop10h 32mFrontier
Deal found 8/16$196
This JetBlue deal was found by Cheapflights users on 8/16. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1511:59 pmDEN - BOS
Nonstop3h 53mJetBlue
Tue 10/217:10 pmBOS - DEN
Nonstop4h 39mJetBlue
Deal found 8/16$197
This JetBlue deal was found by Cheapflights users on 8/16. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2211:59 pmDEN - BOS
Nonstop3h 55mJetBlue
Wed 10/17:55 pmBOS - DEN
Nonstop5h 01mJetBlue
Deal found 8/16$198
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 9/107:48 pmDEN - BOS
1 stop24h 59mMultiple Airlines
Mon 9/225:50 amBOS - DEN
1 stop29h 24mMultiple Airlines
Deal found 8/17$199
This Frontier deal was found by Cheapflights users on 8/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/106:01 pmDEN - BOS
1 stop12h 42mFrontier
Sun 9/218:47 amBOS - DEN
2 stops14h 44mFrontier
Deal found 8/17$200

Cheapflights Fare Finder

 
Customize your flight search to find flights from Colorado 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 August 18, 2025.
Use the filters below to find and compare flights from Colorado to Boston that are best for you.

Fly from

Colorado

Fly to

Boston

Route

Depart

Return

Price

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Sat 10/18

2:30 pm-8:28 pm

Nonstop3h 58m

Boston Logan Intl

Sat 10/25

11:00 am-1:35 pm

Nonstop4h 35m

$197

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Tue 9/16

5:10 pm-11:00 pm

Nonstop3h 50m

Boston Logan Intl

Tue 9/23

7:05 am-9:35 am

Nonstop4h 30m

$197

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Wed 10/15

11:59 pm-5:52 am

Nonstop3h 53m

Boston Logan Intl

Tue 10/21

7:10 pm-9:49 pm

Nonstop4h 39m

$197

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Tue 10/14

11:59 pm-5:52 am

Nonstop3h 53m

Boston Logan Intl

Wed 10/22

7:10 pm-9:49 pm

Nonstop4h 39m

$197

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Fri 10/3

2:10 pm-8:29 pm

Nonstop4h 19m

Boston Logan Intl

Mon 10/6

11:00 am-1:35 pm

Nonstop4h 35m

$197

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Wed 10/15

11:59 pm-5:52 am

Nonstop3h 53m

Boston Logan Intl

Sat 10/25

11:00 am-1:35 pm

Nonstop4h 35m

$197

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Tue 10/14

11:59 pm-5:52 am

Nonstop3h 53m

Boston Logan Intl

Sat 10/25

11:00 am-1:35 pm

Nonstop4h 35m

$197

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Thu 10/16

10:44 pm-4:34 am

Nonstop3h 50m

Boston Logan Intl

Tue 10/21

7:10 pm-9:49 pm

Nonstop4h 39m

$197

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Thu 10/23

10:44 pm-4:34 am

Nonstop3h 50m

Boston Logan Intl

Mon 11/3

9:42 am-12:29 pm

Nonstop4h 47m

$197

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Mon 10/20

10:44 pm-4:34 am

Nonstop3h 50m

Boston Logan Intl

Tue 10/28

9:42 am-12:29 pm

Nonstop4h 47m

$197

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/16

Showing 1-10 of 60 results
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Best time to book a flight from Colorado to Boston

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

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

Currently, January is the cheapest month in which you can book a flight from Colorado to Boston (average of $218). Flying from Colorado to Boston in July is currently the most expensive (average of $311). 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 CO to BOS?

Find hourly flight availability from Colorado 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 August 18, 2025.

When flying from Colorado to Boston, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Colorado to Boston

Explore weekly flight availability from Colorado to Boston. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated August 18, 2025.

The most flights from USCO to BOS are scheduled on a Sunday (20 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (9 on average).

Related info for your journey

Find useful and relevant information for your journey from Colorado to Boston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly into for flights to Boston from Colorado?

    Most people fly into Boston Logan Intl (BOS) if they book a flight to Boston from Colorado. Logan Intl is conveniently located just 2.6 mi from Boston’s city center.

  • How popular is this Colorado to Boston flight route?

  • How long is the flight from Colorado to Boston?

    A quick flight from Colorado to Boston can take about 3h 58m. JetBlue provides one of the quickest options available for as low as $197. The distance between Colorado and Boston is about 1748 mi. This flight may include one or multiple stops.

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

    The cheapest airlines for a one-way flight from Colorado to Boston are American Airlines ($109), United Airlines ($109), and Southwest ($119).

  • What are the most popular routes from Colorado to Boston?

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

    Consider China Eastern (92%), EL AL (83%) or KLM (78%) when booking your flight. These represent the most reliable airlines when flying from Colorado to Boston.

  • What are the cheapest flights from Colorado to Boston?

    The cheapest flight price from Colorado to Boston is $108. On average you can expect to pay $702. The most popular route, (Denver Intl - Boston Logan Intl), can usually be booked for $184.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Colorado to Boston (average of $218). Flying from Colorado to Boston in July is currently the most expensive (average of $311). 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
Cambridge
Medford
Watertown
Hampton Beach
Waltham
Seabrook
Lowell
Lincoln
Smithfield
Cranston
Chestnut Hill
Warwick
Peabody
Quincy
York Beach
Chelsea
Swansea
Saugus
Burlington
Braintree

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Colorado to Boston

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from Colorado to Boston

Discover the top 6 airlines that operate flights from Colorado 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 August 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$105Average$184FlexibilityNo cancel feeOn-time62%
DeltaCheapest$123Average$288FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$128Average$276FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$180Average$435FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$193Average$416FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$194Average$563FlexibilityNo cancel feeOn-time69%

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