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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 1/6. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BOS
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap 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 December 18, 2025.

This JetBlue deal was found by Cheapflights users on 12/16. 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 12/315:47 pmDEN - BOS
Nonstop3h 53mJetBlue
Wed 1/149:59 amBOS - DEN
Nonstop4h 46mJetBlue
Deal found 12/16$217
This Cheapflightsfares deal was found by Cheapflights users on 12/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3111:59 pmDEN - BOS
1 stop7h 53mFrontier
Thu 1/811:06 amBOS - DEN
1 stop13h 53mFrontier
Deal found 12/17$226
This Frontier deal was found by Cheapflights users on 12/16. 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 12/2411:59 pmDEN - BOS
1 stop7h 53mFrontier
Mon 1/58:08 amBOS - DEN
1 stop7h 33mFrontier
Deal found 12/16$233
This JetBlue deal was found by Cheapflights users on 12/16. 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 12/315:47 pmDEN - BOS
Nonstop3h 53mJetBlue
Tue 1/69:59 amBOS - DEN
Nonstop4h 46mJetBlue
Deal found 12/16$237
This JetBlue deal was found by Cheapflights users on 12/16. 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 12/315:47 pmDEN - BOS
Nonstop3h 53mJetBlue
Mon 1/52:55 pmBOS - DEN
1 stop10h 04mJetBlue
Deal found 12/16$247
This Frontier deal was found by Cheapflights users on 12/16. 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.
Mon 12/2912:14 amDEN - BOS
1 stop7h 28mFrontier
Mon 1/58:08 amBOS - DEN
1 stop7h 33mFrontier
Deal found 12/16$253
This Mytrip deal was found by Cheapflights users on 12/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:44 pmDEN - BOS
1 stop14h 07mMultiple Airlines
Mon 1/58:08 amBOS - DEN
1 stop7h 33mMultiple Airlines
Deal found 12/16$254
This American Airlines deal was found by Cheapflights users on 12/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:00 amDEN - BOS
1 stop5h 20mAmerican Airlines
Mon 1/196:00 amBOS - DEN
1 stop10h 14mAmerican Airlines
Deal found 12/16$257
This Expedia deal was found by Cheapflights users on 12/16. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1712:14 amDEN - BOS
1 stop7h 54mMultiple Airlines
Mon 1/199:59 amBOS - DEN
Nonstop4h 46mMultiple Airlines
Deal found 12/16$261
This Frontier deal was found by Cheapflights users on 12/16. 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 12/3111:59 pmDEN - BOS
1 stop7h 53mFrontier
Fri 1/96:00 amBOS - DEN
1 stop8h 21mFrontier
Deal found 12/16$262
This United Airlines deal was found by Cheapflights users on 12/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3112:09 pmCOS - BOS
1 stop9h 29mUnited Airlines
Fri 1/26:01 amBOS - COS
1 stop7h 23mUnited Airlines
Deal found 12/16$283
This American Airlines deal was found by Cheapflights users on 12/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1710:37 amCOS - BOS
1 stop8h 11mAmerican Airlines
Thu 1/156:00 amBOS - COS
1 stop10h 09mAmerican Airlines
Deal found 12/17$317

Find flight deals from Colorado to Boston

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

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$168
(Kiwi.com)

One-way from

$94
(Kiwi.com)

Popular in

July

Cheapest in

January

Average price

$332

Good round-trip deal

$228 or less

Good one-way deal

$142 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.
Search Deals
From Colorado to Boston Logan Intl
Search Deals
One-way flight from Colorado to Boston Logan Intl
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($23 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($3 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 Colorado to Boston Logan Intl.
Search Deals
Price to beat on a one-way flight from Colorado to Boston Logan Intl.
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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 December 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

Tue 1/20

4:45 pm-10:30 pm

Nonstop3h 45m

Boston Logan Intl

Sat 1/24

6:05 am-9:00 am

Nonstop4h 55m

$187

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Thu 1/15

8:01 am-2:02 pm

Nonstop4h 01m

Boston Logan Intl

Mon 1/19

11:17 am-2:12 pm

Nonstop4h 55m

$187

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Thu 1/8

11:38 am-5:35 pm

Nonstop3h 57m

Boston Logan Intl

Thu 1/15

7:20 am-10:24 am

Nonstop5h 04m

$187

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Tue 1/13

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

Sat 1/10

11:38 am-5:35 pm

Nonstop3h 57m

Boston Logan Intl

Sat 1/17

7:20 am-10:24 am

Nonstop5h 04m

$187

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Fri 1/16

2:10 pm-8:05 pm

Nonstop3h 55m

Boston Logan Intl

Fri 1/23

3:15 pm-6:09 pm

Nonstop4h 54m

$197

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Fri 1/23

11:38 am-5:35 pm

Nonstop3h 57m

Boston Logan Intl

Sun 1/25

7:20 am-10:24 am

Nonstop5h 04m

$197

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Thu 1/22

11:38 am-5:35 pm

Nonstop3h 57m

Boston Logan Intl

Tue 1/27

7:20 am-10:24 am

Nonstop5h 04m

$197

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Thu 1/8

11:38 am-5:35 pm

Nonstop3h 57m

Boston Logan Intl

Sat 1/10

7:20 am-10:24 am

Nonstop5h 04m

$197

HaydenBoston

HDN - BOS

HDNBOS

Hayden Yampa Valley

Fri 1/16

12:20 pm-6:16 pm

Nonstop3h 56m

Boston Logan Intl

Sun 1/18

8:00 am-10:50 am

Nonstop4h 50m

$199

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

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 December 18, 2025.

A simple way to save on the total cost of your ticket is to fly from Colorado to Boston in the evening. If you’re flexible enough to do this you can expect to save up to 21% on your trip compared to booking a flight in the afternoon.

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.

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 23 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 $187. The distance between Colorado and Boston is about 1748 mi. All flights are typically nonstop.

  • 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 Frontier ($78), Southwest ($98), and JetBlue ($98).

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

    While some choose either Aspen Pitkin County - Boston Logan Intl or Colorado Springs - 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 (87%), United Airlines (82%) or Icelandair (79%) 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 $88. On average you can expect to pay $498. The most popular route, (Denver Intl - Boston Logan Intl), can usually be booked for $141.

  • 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
Brockton
Cranston
Lincoln
Lowell
Smithfield
Peabody
Quincy
York Beach
Warwick
Londonderry
Swansea
Old Orchard Beach
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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$108Average$213FlexibilityNo cancel feeOn-time62%
DeltaCheapest$130Average$284FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$132Average$286FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$158Average$407FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$186Average$398FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$193Average$516FlexibilityNo cancel feeOn-time69%

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