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$99+ 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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BOS
Mar 13 — Mar 201
Fri 3/13
Fri 3/20
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 February 11, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/10. 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 3/311:25 pm
DEN
-
BOS
1 stop15h 20m
Multiple Airlines
Mon 3/912:35 pm
BOS
-
DEN
1 stop25h 24m
Multiple Airlines
Deal found 2/10$176
This Kiwi.com deal was found by Cheapflights users on 2/8. 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.
Sat 4/1811:59 pm
DEN
-
BOS
1 stop9h 46m
Frontier
Mon 4/2712:35 pm
BOS
-
DEN
1 stop25h 34m
Frontier
Deal found 2/8$177
This Expedia deal was found by Cheapflights users on 2/10. 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 3/42:15 pm
DEN
-
BOS
1 stop8h 58m
Multiple Airlines
Tue 3/107:31 pm
BOS
-
DEN
Nonstop4h 47m
Multiple Airlines
Deal found 2/10$178
This Frontier deal was found by Cheapflights users on 2/10. 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.
Tue 2/241:42 pm
DEN
-
BOS
1 stop9h 31m
Frontier
Tue 3/36:00 am
BOS
-
DEN
1 stop7h 56m
Frontier
Deal found 2/10$179
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 2/241:42 pm
DEN
-
BOS
2 stops25h 03m
Multiple Airlines
Wed 3/45:50 pm
BOS
-
DEN
1 stop17h 41m
Multiple Airlines
Deal found 2/10$180
This Expedia deal was found by Cheapflights users on 2/9. 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.
Tue 2/2411:15 pm
DEN
-
BOS
Nonstop3h 47m
Multiple Airlines
Tue 3/36:00 am
BOS
-
DEN
1 stop7h 56m
Multiple Airlines
Deal found 2/9$181
This Cheapflightsfares deal was found by Cheapflights users on 2/10. 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 3/31:42 pm
DEN
-
BOS
1 stop9h 31m
Frontier
Thu 3/511:45 am
BOS
-
DEN
1 stop22h 35m
Frontier
Deal found 2/10$182
This Frontier deal was found by Cheapflights users on 2/9. 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.
Tue 3/31:42 pm
DEN
-
BOS
1 stop9h 31m
Frontier
Mon 3/912:56 pm
BOS
-
DEN
1 stop9h 38m
Frontier
Deal found 2/9$183
This Kiwi.com deal was found by Cheapflights users on 2/8. 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 4/1611:59 pm
DEN
-
BOS
1 stop9h 46m
Frontier
Sat 4/256:00 am
BOS
-
DEN
1 stop8h 09m
Frontier
Deal found 2/8$184
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 3/1011:59 pm
DEN
-
BOS
1 stop8h 30m
Multiple Airlines
Wed 3/256:01 am
BOS
-
DEN
2 stops27h 01m
Multiple Airlines
Deal found 2/10$186
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 3/211:25 pm
DEN
-
BOS
1 stop22h 34m
Multiple Airlines
Wed 3/2512:09 pm
BOS
-
DEN
1 stop12h 55m
Multiple Airlines
Deal found 2/9$187
This American Airlines deal was found by Cheapflights users on 2/11. 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 3/106:00 am
COS
-
BOS
1 stop7h 13m
American Airlines
Wed 3/118:26 am
BOS
-
COS
1 stop9h 32m
American Airlines
Deal found 2/11$197

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 February 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$176
(Kiwi.com)

One-way from

$99
(American Airlines)

Popular in

June

Cheapest in

January

Average price

$307

Good round-trip deal

$224 or less

Good one-way deal

$171 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 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. 3% potential increase in price ($10 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 February 2026
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.
Search Deals

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 February 11, 2026.
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

Colorado SpringsBoston

COS - BOS

COSBOS

Colorado Springs

Tue 3/10

6:00 am-3:13 pm

1 stop7h 13m

Boston Logan Intl

Wed 3/11

8:26 am-3:58 pm

1 stop9h 32m

$197

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Thu 5/7

11:08 pm-5:01 am

Nonstop3h 53m

Boston Logan Intl

Tue 5/12

7:31 pm-10:13 pm

Nonstop4h 42m

$202

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Thu 3/12

10:59 pm-4:47 am

Nonstop3h 48m

Boston Logan Intl

Wed 3/18

11:51 am-11:04 pm

1 stop13h 13m

$207

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Thu 3/26

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 4/16

6:00 am-2:26 pm

1 stop6h 26m

Boston Logan Intl

Sat 4/25

11:15 am-2:03 pm

Nonstop4h 48m

$213

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Thu 4/23

4:44 pm-8:58 am

1 stop14h 14m

Boston Logan Intl

Sun 4/26

12:35 pm-12:09 pm

1 stop25h 34m

$213

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Thu 3/5

7:05 pm-12:50 am

Nonstop3h 45m

Boston Logan Intl

Sun 3/8

5:00 am-7:45 am

Nonstop4h 45m

$217

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Mon 3/30

11:55 pm-8:05 am

1 stop6h 10m

Boston Logan Intl

Tue 3/31

4:40 pm-7:25 pm

Nonstop4h 45m

$217

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Sat 3/28

11:59 pm-7:53 am

1 stop5h 54m

Boston Logan Intl

Mon 3/30

4:50 pm-7:38 pm

Nonstop4h 48m

$220

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Fri 3/27

11:35 am-5:32 pm

Nonstop3h 57m

Boston Logan Intl

Mon 3/30

7:30 am-10:24 am

Nonstop4h 54m

$227

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/10

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 February is currently the most expensive (average of $165). 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 February 11, 2026.

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 32% on your trip compared to booking a flight at noon.

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 February 7, 2026.

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 26 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 53m. American Airlines provides one of the quickest options available for as low as $202. 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 Frontier ($94), Southwest ($98), and JetBlue ($98).

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

    While some choose either Colorado Springs - 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 Icelandair (92%), United Airlines (84%) or ITA Airways (84%) 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 $106. On average you can expect to pay $646. The most popular route, (Denver Intl - Boston Logan Intl), can usually be booked for $168.

  • 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 February is currently the most expensive (average of $165). 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

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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 February 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$101Average$219FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$118Average$281FlexibilityNo cancel feeOn-time62%
DeltaCheapest$120Average$278FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$158Average$406FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$175Average$511FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$185Average$397FlexibilityNo cancel feeOn-time63%

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