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$119+ 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 7/31. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BOS
Jul 7 — Jul 141
Mon 7/7
Mon 7/14
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 July 2, 2025.

Round-trip from

$204
(FlightHub)

One-way from

$119
(Southwest)

Popular in

June

Cheapest in

January

Average price

$342

Good round-trip deal

$259 or less

Good one-way deal

$154 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. 9% potential increase in price ($33 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 2, 2025.

This FlightHub deal was found by Cheapflights users on 6/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/112:05 pmDEN - BOS
1 stop15h 47mFrontier
Sat 9/138:38 amBOS - DEN
1 stop12h 24mFrontier
Deal found 6/30$204
This JetBlue deal was found by Cheapflights users on 6/30. 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.
Fri 8/1510:39 pmDEN - BOS
Nonstop3h 56mJetBlue
Thu 8/216:35 amBOS - DEN
Nonstop4h 27mJetBlue
Deal found 6/30$217
This Delta deal was found by Cheapflights users on 7/2. 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 9/1011:31 amDEN - BOS
Nonstop4h 04mDelta
Tue 9/167:40 amBOS - DEN
Nonstop4h 30mDelta
Deal found 7/2$227
This Southwest deal was found by Cheapflights users on 7/2. 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 8/1210:40 amDEN - BOS
Nonstop3h 55mSouthwest
Tue 8/199:05 amBOS - DEN
2 stops9h 00mSouthwest
Deal found 7/2$232
This American Airlines deal was found by Cheapflights users on 7/2. 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 10/227:30 amMTJ - BOS
1 stop7h 53mAmerican Airlines
Tue 10/2810:36 amBOS - MTJ
1 stop9h 29mAmerican Airlines
Deal found 7/2$233
This American Airlines deal was found by Cheapflights users on 7/2. 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 7/164:55 pmCOS - BOS
1 stop6h 46mAmerican Airlines
Wed 7/234:15 pmBOS - COS
1 stop9h 37mAmerican Airlines
Deal found 7/2$237
This United Airlines deal was found by Cheapflights users on 7/2. 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 10/173:25 pmMTJ - BOS
1 stop6h 19mUnited Airlines
Wed 10/225:30 amBOS - MTJ
2 stops9h 16mUnited Airlines
Deal found 7/2$238
This Alaska Airlines deal was found by Cheapflights users on 6/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/196:17 pmDEN - BOS
1 stop9h 43mAlaska Airlines
Sat 9/277:20 amBOS - DEN
1 stop12h 01mAlaska Airlines
Deal found 6/30$251
This American Airlines deal was found by Cheapflights users on 7/2. 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.
Sat 9/612:14 pmASE - BOS
1 stop6h 46mAmerican Airlines
Tue 9/168:05 amBOS - ASE
1 stop10h 05mAmerican Airlines
Deal found 7/2$253
This Southwest deal was found by Cheapflights users on 7/1. 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 7/313:50 pmCOS - BOS
1 stop5h 55mSouthwest
Sat 8/166:15 amBOS - COS
1 stop6h 05mSouthwest
Deal found 7/1$257
This Southwest deal was found by Cheapflights users on 7/2. 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 10/171:45 pmMTJ - BOS
1 stop8h 45mSouthwest
Tue 10/215:30 amBOS - MTJ
2 stops12h 35mSouthwest
Deal found 7/2$260
This Southwest deal was found by Cheapflights users on 7/1. 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 10/3012:35 pmHDN - BOS
1 stop9h 55mSouthwest
Sun 11/25:10 amBOS - HDN
1 stop6h 50mSouthwest
Deal found 7/1$284

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 July 2, 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 9/11

2:05 pm-7:52 am

1 stop15h 47m

Boston Logan Intl

Sat 9/13

8:38 am-7:02 pm

1 stop12h 24m

$204

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Fri 8/15

10:39 pm-4:35 am

Nonstop3h 56m

Boston Logan Intl

Thu 8/21

6:35 am-9:02 am

Nonstop4h 27m

$217

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Wed 9/10

11:31 am-5:35 pm

Nonstop4h 04m

Boston Logan Intl

Sat 9/20

7:40 am-10:10 am

Nonstop4h 30m

$227

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Tue 8/12

10:40 am-4:35 pm

Nonstop3h 55m

Boston Logan Intl

Tue 8/19

9:05 am-4:05 pm

2 stops9h 00m

$232

MontroseBoston

MTJ - BOS

MTJBOS

Montrose County

Wed 10/22

7:30 am-5:23 pm

1 stop7h 53m

Boston Logan Intl

Tue 10/28

10:36 am-6:05 pm

1 stop9h 29m

$233

Colorado SpringsBoston

COS - BOS

COSBOS

Colorado Springs

Wed 7/16

4:55 pm-1:41 am

1 stop6h 46m

Boston Logan Intl

Wed 7/23

4:15 pm-11:52 pm

1 stop9h 37m

$237

MontroseBoston

MTJ - BOS

MTJBOS

Montrose County

Fri 10/17

3:25 pm-11:44 pm

1 stop6h 19m

Boston Logan Intl

Wed 10/22

5:30 am-12:46 pm

2 stops9h 16m

$238

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Fri 9/19

6:17 pm-6:00 am

1 stop9h 43m

Boston Logan Intl

Sat 9/27

7:20 am-5:21 pm

1 stop12h 01m

$251

AspenBoston

ASE - BOS

ASEBOS

Aspen Pitkin County

Sat 9/6

12:14 pm-9:00 pm

1 stop6h 46m

Boston Logan Intl

Tue 9/16

8:05 am-4:10 pm

1 stop10h 05m

$253

Colorado SpringsBoston

COS - BOS

COSBOS

Colorado Springs

Thu 7/31

3:50 pm-11:45 pm

1 stop5h 55m

Boston Logan Intl

Sat 8/16

6:15 am-10:20 am

1 stop6h 05m

$257

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Showing 1-10 of 53 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 June is currently the most expensive (average of $306). 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 July 2, 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 July 2, 2025.

The most flights from USCO to BOS are scheduled on a Monday (21 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (7 on average).

Reviews of airlines servicing Boston

Get insights into the airlines that provide service to Boston. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Boston. Reviews last updated July 2, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta from Colorado to Boston by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,272 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,983 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,540 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,861 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 24 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • 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 Southwest ($119), American Airlines ($119), and Frontier ($120).

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

    While some choose either Vail Eagle 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 (80%), Delta (77%) or Air France (73%) 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 $111. On average you can expect to pay $1,119. The most popular route, (Denver Intl - Boston Logan Intl), can usually be booked for $207.

  • 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 June is currently the most expensive (average of $306). 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 Colorado?

Book flights to Colorado if you plan to visit one of these locations
Cambridge
Medford
Watertown
Warwick
Seabrook
Waltham
Framingham
Cranston
Randolph
Chestnut Hill
Chelsea
Brockton
York Beach
Saco
Burlington
West Yarmouth
Smithfield
Swansea
Lincoln
Quincy

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Alternative routes for Colorado to Boston

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Colorado to Boston

Discover the top 7 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 July 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
Breeze AirwaysCheapest$73Average$141FlexibilityNo cancel feeOn-timeN/A
FrontierCheapest$105Average$177FlexibilityNo cancel feeOn-time62%
DeltaCheapest$118Average$292FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$125Average$269FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$194Average$553FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$197Average$420FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$206Average$442FlexibilityNo cancel feeOn-time71%

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