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$94+ 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 12/15. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BOS
Dec 19 — Dec 261
Fri 12/19
Fri 12/26
1 adult, Economy
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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 November 19, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$161
(Kiwi.com)

One-way from

$94
(American Airlines)

Popular in

July

Cheapest in

January

Average price

$322

Good round-trip deal

$230 or less

Good one-way deal

$155 or less
Provider with most accurate pricing for Denver Intl-Boston Logan Intl flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Boston Logan Intl flights.
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From Colorado to Boston Logan Intl
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One-way flight from Colorado to Boston Logan Intl
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Highest demand for flights based on searches. 6% potential increase in price ($23 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease ($3 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Price to beat on a round-trip flight from Colorado to Boston Logan Intl.
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Price to beat on a one-way flight from Colorado to Boston Logan Intl.
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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 November 19, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/17. 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.
Thu 12/111:42 pmDEN - BOS
2 stops15h 51mFrontier
Mon 12/158:28 amBOS - DEN
1 stop7h 18mFrontier
Deal found 11/17$163
This Kiwi.com deal was found by Cheapflights users on 11/19. 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.
Sun 12/712:59 amDEN - BOS
1 stop7h 23mFrontier
Fri 12/128:28 amBOS - DEN
1 stop7h 18mFrontier
Deal found 11/19$165
This Kiwi.com deal was found by Cheapflights users on 11/18. 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.
Wed 12/1011:59 pmDEN - BOS
1 stop17h 07mMultiple Airlines
Sun 12/1411:28 amBOS - DEN
2 stops32h 40mMultiple Airlines
Deal found 11/18$166
This Southwest deal was found by Cheapflights users on 11/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/45:00 pmDEN - BOS
Nonstop3h 45mSouthwest
Wed 12/106:45 amBOS - DEN
Nonstop4h 40mSouthwest
Deal found 11/18$167
This JetBlue deal was found by Cheapflights users on 11/18. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/411:59 pmDEN - BOS
Nonstop3h 45mJetBlue
Wed 12/109:49 amBOS - DEN
Nonstop4h 46mJetBlue
Deal found 11/18$168
This Kiwi.com deal was found by Cheapflights users on 11/18. 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 12/211:00 pmDEN - BOS
2 stops33h 22mFrontier
Fri 12/58:28 amBOS - DEN
1 stop7h 18mFrontier
Deal found 11/18$169
This Kiwi.com deal was found by Cheapflights users on 11/18. 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 12/212:59 amDEN - BOS
1 stop17h 50mMultiple Airlines
Fri 12/58:28 amBOS - DEN
1 stop7h 18mMultiple Airlines
Deal found 11/18$170
This Kiwi.com deal was found by Cheapflights users on 11/18. 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.
Thu 12/47:00 amDEN - BOS
2 stops26h 22mFrontier
Mon 12/88:28 amBOS - DEN
1 stop7h 18mFrontier
Deal found 11/18$171
This Kiwi.com deal was found by Cheapflights users on 11/18. 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.
Wed 12/36:30 amDEN - BOS
2 stops25h 52mFrontier
Fri 12/58:28 amBOS - DEN
1 stop7h 18mFrontier
Deal found 11/18$173
This Kiwi.com deal was found by Cheapflights users on 11/19. 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.
Thu 12/116:00 amDEN - BOS
1 stop23h 33mFrontier
Sun 12/1411:28 amBOS - DEN
2 stops32h 40mFrontier
Deal found 11/19$174
This American Airlines deal was found by Cheapflights users on 11/19. 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.
Wed 12/175:33 amCOS - BOS
1 stop7h 20mAmerican Airlines
Sat 1/179:45 amBOS - COS
1 stop9h 56mAmerican Airlines
Deal found 11/19$182
This American Airlines deal was found by Cheapflights users on 11/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/212:36 pmCOS - BOS
1 stop5h 46mAmerican Airlines
Thu 12/45:30 amBOS - COS
1 stop8h 18mAmerican Airlines
Deal found 11/18$222

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 November 19, 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

Thu 12/4

5:00 pm-10:45 pm

Nonstop3h 45m

Boston Logan Intl

Wed 12/10

5:45 am-2:30 pm

2 stops10h 45m

$182

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Wed 12/3

8:00 am-4:45 pm

2 stops6h 45m

Boston Logan Intl

Thu 12/4

6:45 am-9:25 am

Nonstop4h 40m

$182

Colorado SpringsBoston

COS - BOS

COSBOS

Colorado Springs

Wed 12/17

5:33 am-5:10 pm

1 stop9h 37m

Boston Logan Intl

Sat 1/17

7:00 am-5:41 pm

2 stops12h 41m

$187

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Fri 1/16

11:38 am-5:35 pm

Nonstop3h 57m

Boston Logan Intl

Tue 1/20

7:20 am-10:24 am

Nonstop5h 04m

$187

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Wed 1/14

11:38 am-5:35 pm

Nonstop3h 57m

Boston Logan Intl

Sun 1/18

7:20 am-10:24 am

Nonstop5h 04m

$187

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Fri 12/5

11:55 pm-8:05 am

1 stop6h 10m

Boston Logan Intl

Tue 12/9

5:30 am-11:15 am

2 stops7h 45m

$192

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Thu 12/11

8:05 am-4:45 pm

2 stops6h 40m

Boston Logan Intl

Fri 12/12

6:55 pm-11:15 pm

1 stop6h 20m

$192

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Thu 1/22

1:40 pm-7:33 pm

Nonstop3h 53m

Boston Logan Intl

Mon 1/26

9:59 am-12:45 pm

Nonstop4h 46m

$197

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Thu 1/15

11:38 am-5:35 pm

Nonstop3h 57m

Boston Logan Intl

Mon 1/19

7:20 am-10:24 am

Nonstop5h 04m

$197

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Fri 2/6

11:38 am-5:35 pm

Nonstop3h 57m

Boston Logan Intl

Sun 2/8

7:20 am-10:24 am

Nonstop5h 04m

$197

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/18

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, August is the cheapest month in which you can book a flight from Colorado to Boston (average of $65). Flying from Colorado to Boston in September is currently the most expensive (average of $151). 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 November 19, 2025.

A simple way to save on the total cost of your ticket is to fly from Colorado to Boston at noon. If you’re flexible enough to do this you can expect to save up to 7% on your trip compared to booking a flight in the evening.

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

Use this chart to determine the cheapest time to fly round-trip from Colorado to Boston. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Colorado to Boston flight should consider departing on Monday mornings 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.

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 November 19, 2025.

The most flights from USCO to BOS are scheduled on a Tuesday (14 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (4 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?

    The Colorado to Boston Logan Intl flight path was viewed by 22 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 Colorado to Boston?

    A quick flight from Colorado to Boston can take about 3h 45m. Southwest provides one of the quickest options available for as low as $182. 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 ($94), Southwest ($94), and Frontier ($95).

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

    While some choose either Durango La Plata County - Boston Logan Intl or Montrose County - Boston Logan Intl, Denver Intl - Boston Logan Intl is the most popular route from Colorado to Boston.

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

    Consider EL AL (78%), Icelandair (74%) or ITA Airways (72%) 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 $87. On average you can expect to pay $786. The most popular route, (Denver Intl - Boston Logan Intl), can usually be booked for $142.

  • 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, August is the cheapest month in which you can book a flight from Colorado to Boston (average of $65). Flying from Colorado to Boston in September is currently the most expensive (average of $151). 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
Hampton Beach
Watertown
Seabrook
Seekonk
Lincoln
Lowell
Smithfield
Cranston
Chestnut Hill
Peabody
Quincy
York Beach
Warwick
Swansea
Old Orchard Beach
Brockton
Waltham
Chelsea

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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 November 19, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$104Average$207FlexibilityNo cancel feeOn-time62%
DeltaCheapest$128Average$283FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$129Average$284FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$158Average$408FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$190Average$395FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$195Average$537FlexibilityNo cancel feeOn-time69%

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