HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Boston

$91+ 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 12/17. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BOS
Dec 26 — Jan 21
Fri 12/26
Fri 1/2
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Colorado to Boston with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 November 26, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$163
(lastminute.com)

One-way from

$91
(Cheapflightsfares)

Popular in

July

Cheapest in

January

Average price

$325

Good round-trip deal

$222 or less

Good one-way deal

$141 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. 6% potential increase in price ($22 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 November 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.
Search Deals

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 November 26, 2025.

This lastminute.com deal was found by Cheapflights users on 11/24. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/81:30 pmDEN - BOS
Nonstop3h 46mJetBlue
Sun 12/148:07 pmBOS - DEN
Nonstop4h 52mJetBlue
Deal found 11/24$163
This eDestinos deal was found by Cheapflights users on 11/24. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/91:30 pmDEN - BOS
Nonstop3h 46mJetBlue
Sun 12/149:49 amBOS - DEN
Nonstop4h 46mJetBlue
Deal found 11/24$165
This JetBlue deal was found by Cheapflights users on 11/26. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1211:59 pmDEN - BOS
Nonstop3h 45mJetBlue
Mon 12/158:07 pmBOS - DEN
Nonstop4h 52mJetBlue
Deal found 11/26$167
This Southwest deal was found by Cheapflights users on 11/24. 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.
Mon 12/88:15 amDEN - BOS
1 stop7h 05mSouthwest
Sun 12/146:10 amBOS - DEN
Nonstop4h 50mSouthwest
Deal found 11/24$177
This Delta deal was found by Cheapflights users on 11/24. 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.
Mon 12/811:36 amDEN - BOS
Nonstop4h 00mDelta
Sun 12/147:35 amBOS - DEN
Nonstop4h 51mDelta
Deal found 11/24$178
This Kiwi.com deal was found by Cheapflights users on 11/25. 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 12/1012:59 amDEN - BOS
2 stops20h 57mMultiple Airlines
Mon 12/158:28 amBOS - DEN
1 stop7h 18mMultiple Airlines
Deal found 11/25$179
This Kiwi.com deal was found by Cheapflights users on 11/23. 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 12/912:59 amDEN - BOS
2 stops20h 57mMultiple Airlines
Mon 12/158:11 pmBOS - DEN
1 stop28h 53mMultiple Airlines
Deal found 11/23$181
This American Airlines deal was found by Cheapflights users on 11/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/175:33 amCOS - BOS
1 stop9h 37mAmerican Airlines
Sat 1/179:45 amBOS - COS
1 stop9h 56mAmerican Airlines
Deal found 11/26$182
This Frontier deal was found by Cheapflights users on 11/25. 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
Mon 1/58:08 amBOS - DEN
1 stop7h 33mFrontier
Deal found 11/25$183
This Frontier deal was found by Cheapflights users on 11/25. 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 12/312:42 pmDEN - BOS
1 stop8h 32mFrontier
Tue 1/66:00 amBOS - DEN
1 stop8h 21mFrontier
Deal found 11/25$184
This American Airlines deal was found by Cheapflights users on 11/24. 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.
Mon 12/812:36 pmCOS - BOS
1 stop9h 04mAmerican Airlines
Sun 12/145:30 amBOS - COS
1 stop8h 18mAmerican Airlines
Deal found 11/24$187
This American Airlines deal was found by Cheapflights users on 11/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1211:59 pmDEN - BOS
1 stop7h 58mAmerican Airlines
Tue 12/161:25 pmBOS - DEN
1 stop9h 09mAmerican Airlines
Deal found 11/26$187

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 November 26, 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

Colorado SpringsBoston

COS - BOS

COSBOS

Colorado Springs

Wed 12/17

5:33 am-5:10 pm

1 stop9h 37m

Boston Logan Intl

Sat 1/17

9:45 am-5:41 pm

1 stop9h 56m

$182

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Wed 12/17

1:30 pm-7:16 pm

Nonstop3h 46m

Boston Logan Intl

Mon 1/12

9:59 am-12:45 pm

Nonstop4h 46m

$182

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Tue 2/3

11:38 am-5:35 pm

Nonstop3h 57m

Boston Logan Intl

Sat 2/7

7:20 am-10:24 am

Nonstop5h 04m

$187

Colorado SpringsBoston

COS - BOS

COSBOS

Colorado Springs

Mon 12/8

12:36 pm-11:40 pm

1 stop9h 04m

Boston Logan Intl

Sun 12/14

5:30 am-11:48 am

1 stop8h 18m

$187

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Thu 1/29

1:40 pm-7:33 pm

Nonstop3h 53m

Boston Logan Intl

Tue 2/3

9:59 am-12:45 pm

Nonstop4h 46m

$187

Colorado SpringsBoston

COS - BOS

COSBOS

Colorado Springs

Tue 12/9

5:33 am-5:25 pm

2 stops9h 52m

Boston Logan Intl

Sat 12/13

7:00 am-12:08 pm

1 stop7h 08m

$192

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

$197

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Wed 12/31

11:55 pm-9:40 am

1 stop7h 45m

Boston Logan Intl

Mon 1/5

6:20 pm-9:05 pm

Nonstop4h 45m

$199

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Fri 1/23

7:45 am-5:14 pm

1 stop7h 29m

Boston Logan Intl

Sun 1/25

11:17 am-2:12 pm

Nonstop4h 55m

$222

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Thu 4/9

11:59 pm-5:52 am

Nonstop3h 53m

Boston Logan Intl

Mon 4/13

8:24 pm-11:04 pm

Nonstop4h 40m

$237

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/23

Showing 1-10 of 60 results
1
2
3
...
6

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 November 26, 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.

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 November 26, 2025.

The most flights from USCO to BOS are scheduled on a Wednesday (16 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (1 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 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 46m. American Airlines provides one of the quickest options available for as low as $182. 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 ($94), United Airlines ($99), and Southwest ($99).

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

    While some choose either Montrose County - 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 EL AL (78%), Icelandair (74%) or ITA Airways (72%) 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 $85. On average you can expect to pay $535. The most popular route, (Denver Intl - Boston Logan Intl), can usually be booked for $142.

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Colorado to Boston

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Boston flights
Dallas/Fort Worth to Boston flights
San Francisco to Boston flights
LaGuardia to Boston flights
Seattle to Boston flights
Baltimore to Boston flights
Reagan-National to Boston flights
O'Hare Intl to Boston flights
Dulles Intl to Boston flights
John F Kennedy Intl to Boston flights
Denver to Boston flights
Atlanta to Boston flights
Newark to Boston flights
Tampa to Boston flights
Orlando to Boston flights
Charlotte to Boston flights
Philadelphia to Boston flights
Hobby to Boston flights
Raleigh to Boston flights
Fort Lauderdale to Boston flights
George Bush Intcntl to Boston flights
Detroit to Boston flights
Austin to Hartford flights
Orlando to Hartford flights
Ontario to Boston flights
Miami to Boston flights
Sky Harbor Intl to Boston flights
Richmond to Boston flights
Midway to Boston flights
Austin to Boston flights
Cleveland to Boston flights
Nashville to Boston flights
Minneapolis to Boston flights
Portland to Boston flights
Salt Lake City to Boston flights
Indianapolis to Boston flights
Fort Myers to Boston flights
Cincinnati to Boston flights
Jacksonville to Boston flights
O'Hare Intl to Hartford flights
San Diego to Boston flights
Pittsburgh to Boston flights
Tampa to Hartford flights
West Palm Beach to Boston flights
Fort Lauderdale to Hartford flights
Love Field to Boston flights
Islip to Boston flights
Columbus to Boston flights
San Antonio to Boston flights
Las Vegas to Boston flights

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 November 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$106Average$210FlexibilityNo cancel feeOn-time62%
DeltaCheapest$129Average$283FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$130Average$286FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$158Average$403FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$186Average$398FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$193Average$522FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.