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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 3/23. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BOS
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
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 January 29, 2026.

This JetBlue deal was found by Cheapflights users on 1/27. 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 2/1811:13 pm
DEN
-
BOS
Nonstop3h 47m
JetBlue
Sun 2/227:31 pm
BOS
-
DEN
Nonstop4h 47m
JetBlue
Deal found 1/27$177
This CheapOair deal was found by Cheapflights users on 1/27. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/111:45 pm
DEN
-
BOS
Nonstop3h 53m
Multiple Airlines
Sat 2/2112:35 pm
BOS
-
DEN
1 stop8h 52m
Multiple Airlines
Deal found 1/27$178
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 3/412:59 am
DEN
-
BOS
2 stops14h 16m
Multiple Airlines
Tue 3/1012:36 pm
BOS
-
DEN
1 stop12h 28m
Multiple Airlines
Deal found 1/27$179
This United Airlines deal was found by Cheapflights users on 1/29. 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 2/1811:59 pm
DEN
-
BOS
Nonstop3h 53m
United Airlines
Tue 2/243:09 pm
BOS
-
DEN
Nonstop4h 58m
United Airlines
Deal found 1/29$180
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 2/1612:59 am
DEN
-
BOS
1 stop22h 14m
Frontier
Fri 2/276:00 am
BOS
-
DEN
2 stops36h 18m
Frontier
Deal found 1/28$181
This CheapOair deal was found by Cheapflights users on 1/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/1311:13 pm
DEN
-
BOS
Nonstop3h 47m
Multiple Airlines
Sat 2/216:00 am
BOS
-
DEN
1 stop8h 38m
Multiple Airlines
Deal found 1/28$182
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 2/1612:59 am
DEN
-
BOS
1 stop22h 14m
Frontier
Wed 2/256:00 am
BOS
-
DEN
1 stop17h 35m
Frontier
Deal found 1/28$183
This Cheapflightsfares deal was found by Cheapflights users on 1/29. 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 2/186:20 pm
DEN
-
BOS
1 stop12h 46m
Frontier
Tue 2/246:00 am
BOS
-
DEN
1 stop7h 56m
Frontier
Deal found 1/29$184
This Kiwi.com deal was found by Cheapflights users on 1/26. 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.
Fri 2/2711:49 am
DEN
-
BOS
1 stop11h 24m
Multiple Airlines
Mon 3/26:10 pm
BOS
-
DEN
2 stops19h 46m
Multiple Airlines
Deal found 1/26$185
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 2/2411:59 pm
DEN
-
BOS
1 stop14h 46m
Multiple Airlines
Thu 3/1212:56 pm
BOS
-
DEN
1 stop9h 59m
Multiple Airlines
Deal found 1/27$186
This Delta deal was found by Cheapflights users on 1/27. 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 2/1811:33 am
DEN
-
BOS
Nonstop3h 54m
Delta
Wed 2/257:20 am
BOS
-
DEN
Nonstop5h 03m
Delta
Deal found 1/27$187
This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
Fri 2/276:00 am
DEN
-
BOS
2 stops17h 13m
Frontier
Sun 3/16:00 am
BOS
-
DEN
1 stop18h 10m
Frontier
Deal found 1/27$188

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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$177
(JetBlue)

One-way from

$99
(Southwest)

Popular in

June

Cheapest in

January

Average price

$267

Good round-trip deal

$220 or less

Good one-way deal

$170 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. 5% potential increase in price ($16 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 January 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 January 29, 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

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Thu 2/26

11:15 pm-5:02 am

Nonstop3h 47m

Boston Logan Intl

Mon 3/2

7:31 pm-10:18 pm

Nonstop4h 47m

$197

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Tue 4/21

6:00 pm-12:05 am

Nonstop4h 05m

Boston Logan Intl

Mon 4/27

5:15 am-7:45 am

Nonstop4h 30m

$197

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Sat 4/4

11:25 pm-5:17 am

Nonstop3h 52m

Boston Logan Intl

Tue 4/7

7:35 pm-10:17 pm

Nonstop4h 42m

$200

Colorado SpringsBoston

COS - BOS

COSBOS

Colorado Springs

Sat 2/14

1:39 pm-11:59 pm

1 stop8h 20m

Boston Logan Intl

Tue 2/17

4:04 pm-10:10 pm

1 stop8h 06m

$204

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Wed 2/25

11:59 pm-9:15 am

1 stop7h 16m

Boston Logan Intl

Wed 3/4

4:47 pm-7:40 pm

Nonstop4h 53m

$210

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Tue 4/14

7:45 am-1:47 pm

Nonstop4h 02m

Boston Logan Intl

Mon 4/20

6:25 pm-11:59 pm

1 stop7h 34m

$213

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Tue 4/21

6:00 am-2:26 pm

1 stop6h 26m

Boston Logan Intl

Mon 4/27

4:50 pm-7:38 pm

Nonstop4h 48m

$213

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Fri 3/6

7:05 pm-12:50 am

Nonstop3h 45m

Boston Logan Intl

Tue 3/10

4:40 pm-7:25 pm

Nonstop4h 45m

$217

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Wed 2/25

11:15 pm-5:02 am

Nonstop3h 47m

Boston Logan Intl

Wed 3/4

7:31 pm-10:18 pm

Nonstop4h 47m

$217

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Tue 4/7

6:00 pm-12:05 am

Nonstop4h 05m

Boston Logan Intl

Sun 4/12

5:15 am-7:45 am

Nonstop4h 30m

$217

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

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 $148). 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 January 29, 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 24% 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 January 24, 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.

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 January 29, 2026.

The most flights from USCO to BOS are scheduled on a Tuesday (11 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 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 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 47m. 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 Frontier ($94), Southwest ($97), and JetBlue ($98).

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

    While some choose either Colorado Springs - Boston Logan Intl or Grand Junction Regnl - 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 (95%), United Airlines (92%) or ITA Airways (88%) 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 $98. On average you can expect to pay $732. The most popular route, (Denver Intl - Boston Logan Intl), can usually be booked for $169.

  • 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 $148). 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
Warwick
Seabrook
Cranston
Lincoln
Smithfield
Peabody
Quincy
York Beach
Londonderry
Swansea
Old Orchard Beach
Waltham
Lowell
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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$90Average$216FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$116Average$281FlexibilityNo cancel feeOn-time62%
DeltaCheapest$119Average$278FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$158Average$407FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$180Average$517FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$186Average$395FlexibilityNo cancel feeOn-time63%

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