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$80+ 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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BOS
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
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 September 17, 2025.

Round-trip from

$171
(Booking.com)

One-way from

$80
(American Airlines)

Popular in

July

Cheapest in

January

Average price

$307

Good round-trip deal

$240 or less

Good one-way deal

$163 or less
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. 8% potential increase in price ($27 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 September 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 September 17, 2025.

This Booking.com deal was found by Cheapflights users on 9/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/156:55 pmDEN - BOS
1 stop14h 27mFrontier
Fri 10/2412:49 pmBOS - DEN
1 stop9h 15mFrontier
Deal found 9/16$171
This Cheapflightsfares deal was found by Cheapflights users on 9/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/66:47 pmDEN - BOS
1 stop11h 05mFrontier
Sun 11/910:43 amBOS - DEN
1 stop10h 30mFrontier
Deal found 9/16$174
This Southwest deal was found by Cheapflights users on 9/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/246:40 pmDEN - BOS
Nonstop3h 50mSouthwest
Tue 10/286:45 amBOS - DEN
Nonstop4h 40mSouthwest
Deal found 9/16$175
This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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 10/2112:36 amDEN - BOS
1 stop29h 57mFrontier
Mon 10/279:18 amBOS - DEN
1 stop15h 58mFrontier
Deal found 9/15$176
This Delta deal was found by Cheapflights users on 9/15. 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.
Sat 10/1811:40 amDEN - BOS
Nonstop4h 00mDelta
Wed 10/227:50 amBOS - DEN
Nonstop4h 40mDelta
Deal found 9/15$177
This Trip.com deal was found by Cheapflights users on 9/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2310:39 pmDEN - BOS
Nonstop3h 48mJetBlue
Sat 10/2510:15 amBOS - DEN
Nonstop4h 44mJetBlue
Deal found 9/15$180
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Fri 10/245:41 pmDEN - BOS
Nonstop4h 03mUnited Airlines
Wed 10/295:17 pmBOS - DEN
1 stop8h 19mUnited Airlines
Deal found 9/16$181
This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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 10/221:44 pmDEN - BOS
1 stop16h 49mFrontier
Sun 10/2611:44 amBOS - DEN
1 stop22h 49mFrontier
Deal found 9/15$182
This Southwest deal was found by Cheapflights users on 9/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2411:40 pmDEN - BOS
1 stop6h 45mSouthwest
Wed 10/292:05 pmBOS - DEN
Nonstop4h 40mSouthwest
Deal found 9/16$185
This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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.
Sun 9/2812:59 amDEN - BOS
1 stop6h 59mFrontier
Thu 10/212:59 pmBOS - DEN
1 stop10h 32mFrontier
Deal found 9/15$186
This Priceline deal was found by Cheapflights users on 9/15. 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.
Wed 10/2211:45 pmDEN - BOS
1 stop5h 51mFrontier
Fri 10/2412:49 pmBOS - DEN
1 stop9h 15mFrontier
Deal found 9/15$188
This Southwest deal was found by Cheapflights users on 9/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/286:15 amCOS - BOS
1 stop6h 25mSouthwest
Tue 11/46:45 amBOS - COS
1 stop6h 55mSouthwest
Deal found 9/16$195

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 September 17, 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 11/13

9:10 am-6:10 pm

1 stop7h 00m

Boston Logan Intl

Sun 11/16

6:10 am-9:00 am

Nonstop4h 50m

$185

Colorado SpringsBoston

COS - BOS

COSBOS

Colorado Springs

Mon 11/10

11:05 am-6:40 pm

1 stop5h 35m

Boston Logan Intl

Mon 11/17

6:45 am-11:40 am

1 stop6h 55m

$195

Colorado SpringsBoston

COS - BOS

COSBOS

Colorado Springs

Mon 11/10

11:05 am-6:40 pm

1 stop5h 35m

Boston Logan Intl

Sun 11/16

5:15 am-9:30 am

1 stop6h 15m

$195

Colorado SpringsBoston

COS - BOS

COSBOS

Colorado Springs

Tue 10/28

6:15 am-2:40 pm

1 stop6h 25m

Boston Logan Intl

Tue 11/4

6:45 am-11:40 am

1 stop6h 55m

$195

Colorado SpringsBoston

COS - BOS

COSBOS

Colorado Springs

Sat 10/18

3:50 pm-11:20 pm

1 stop5h 30m

Boston Logan Intl

Fri 10/24

5:35 am-11:50 am

1 stop8h 15m

$195

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Sat 10/18

11:40 pm-8:10 am

1 stop6h 30m

Boston Logan Intl

Tue 10/21

5:15 am-9:45 am

1 stop6h 30m

$195

Colorado SpringsBoston

COS - BOS

COSBOS

Colorado Springs

Thu 11/13

11:05 am-12:05 am

1 stop11h 00m

Boston Logan Intl

Sun 11/16

5:15 am-9:30 am

1 stop6h 15m

$200

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Fri 11/14

1:10 pm-10:30 pm

2 stops7h 20m

Boston Logan Intl

Mon 11/17

10:20 am-3:05 pm

1 stop6h 45m

$200

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Sat 10/18

5:41 pm-11:44 pm

Nonstop4h 03m

Boston Logan Intl

Fri 10/24

7:13 pm-9:48 pm

Nonstop4h 35m

$203

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Fri 10/31

11:51 am-7:50 pm

1 stop5h 59m

Boston Logan Intl

Sat 11/8

9:45 am-12:31 pm

Nonstop4h 46m

$226

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

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, 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 September 17, 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 September 17, 2025.

The most flights from USCO to BOS are scheduled on a Monday (21 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (12 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 19 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 4h 03m. Southwest provides one of the quickest options available for as low as $203. 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 ($80), Southwest ($98), and JetBlue ($116).

  • 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 China Eastern (92%), Virgin Atlantic (86%) or EL AL (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 $103. On average you can expect to pay $612. The most popular route, (Denver Intl - Boston Logan Intl), can usually be booked for $139.

  • 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
Hampton Beach
Watertown
Seabrook
Seekonk
Lincoln
Lowell
Smithfield
Cranston
Chestnut Hill
Chelsea
Warwick
Peabody
Quincy
York Beach
Swansea
Old Orchard Beach
Brockton
Waltham

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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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$105Average$196FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$127Average$281FlexibilityNo cancel feeOn-time62%
DeltaCheapest$127Average$281FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$158Average$423FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$196Average$561FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$197Average$376FlexibilityNo cancel feeOn-time63%

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