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Cheap flights from Colorado to Boston from $80

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado to Boston departing on 8/31. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Colorado to Boston

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
4:20 pm - 12:30 am
COS
-
BOS
6h 10m
1 stop
Southwest Logo
8:15 am - 4:35 pm
BOS
-
COS
10h 20m
2 stops
$169Southwest
Mon, Aug 10 - Wed, Aug 19
Southwest Logo
4:15 pm - 12:05 am
COS
-
BOS
5h 50m
1 stop
Southwest Logo
10:05 am - 5:00 pm
BOS
-
COS
8h 55m
1 stop
$182Southwest
Tue, Sep 22 - Wed, Sep 30
Southwest Logo
6:15 am - 6:35 pm
COS
-
BOS
10h 20m
2 stops
Southwest Logo
5:40 am - 10:00 am
BOS
-
COS
6h 20m
1 stop
$187Southwest
Wed, Sep 9 - Sat, Sep 12
American Airlines Logo
8:00 am - 7:52 pm
COS
-
BOS
9h 52m
1 stop
American Airlines Logo
8:30 am - 4:29 pm
BOS
-
COS
9h 59m
1 stop
$218American Airlines
Tue, Sep 22 - Tue, Sep 29
Frontier Logo
11:59 pm - 10:57 am
DEN
-
BOS
8h 58m
1 stop
Frontier Logo
8:41 am - 2:19 pm
BOS
-
DEN
7h 38m
1 stop
$244Frontier
Sat, Jul 25 - Wed, Jul 29
Multiple Airlines Logo
11:37 pm - 5:30 am
DEN
-
BOS
3h 53mnonstop
Multiple Airlines Logo
10:04 am - 11:00 pm
BOS
-
DEN
14h 56m
1 stop
$245Multiple Airlines
Sat, Aug 8 - Fri, Aug 14
United Airlines Logo
11:59 pm - 6:00 am
DEN
-
BOS
4h 01mnonstop
United Airlines Logo
7:45 am - 10:22 am
BOS
-
DEN
4h 37mnonstop
$247United Airlines
Fri, Sep 25 - Sat, Oct 3
Multiple Airlines Logo
11:59 pm - 11:47 am
DEN
-
BOS
9h 48m
1 stop
Multiple Airlines Logo
6:30 am - 9:03 am
BOS
-
DEN
4h 33mnonstop
$248Multiple Airlines
Mon, Aug 17 - Thu, Aug 20
American Airlines Logo
12:50 pm - 10:50 pm
DEN
-
BOS
8h 00m
1 stop
American Airlines Logo
8:10 am - 3:13 pm
BOS
-
DEN
9h 03m
1 stop
$249American Airlines
Fri, Sep 4 - Wed, Sep 9
United Airlines Logo
1:37 pm - 12:59 am
MTJ
-
BOS
9h 22m
2 stops
United Airlines Logo
7:45 am - 2:27 pm
BOS
-
MTJ
8h 42m
1 stop
$337United Airlines
Mon, Oct 19 - Fri, Oct 23

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United Airlines flights from Colorado to Boston

Our best United Airlines deals on Colorado to Boston flight tickets
United Airlines
Aug 13
COS11:55 amColorado Springs
8h 04m
1 stop
BOS9:59 pmBoston Logan Intl
Aug 19
BOS6:01 amBoston Logan Intl
6h 32m
1 stop
COS10:33 amColorado Springs
$239
United Airlines
Aug 22
COS11:55 amColorado Springs
8h 03m
1 stop
BOS9:58 pmBoston Logan Intl
Aug 29
BOS6:01 amBoston Logan Intl
6h 32m
1 stop
COS10:33 amColorado Springs
$245
United Airlines
Sep 25
DEN11:59 pmDenver Intl
4h 01m
BOS6:00 amBoston Logan Intl
Oct 3
BOS7:45 amBoston Logan Intl
4h 37m
DEN10:22 amDenver Intl
$247

Frontier flights from Colorado to Boston

Our best Frontier deals on Colorado to Boston flight tickets
Frontier
Jul 25
DEN11:59 pmDenver Intl
8h 58m
1 stop
BOS10:57 amBoston Logan Intl
Jul 29
BOS8:41 amBoston Logan Intl
7h 38m
1 stop
DEN2:19 pmDenver Intl
$244
Frontier
Jul 22
DEN11:46 pmDenver Intl
9h 11m
1 stop
BOS10:57 amBoston Logan Intl
Jul 29
BOS8:41 amBoston Logan Intl
7h 38m
1 stop
DEN2:19 pmDenver Intl
$246
Frontier
Jul 22
DEN11:46 pmDenver Intl
9h 11m
1 stop
BOS10:57 amBoston Logan Intl
Jul 29
BOS8:41 amBoston Logan Intl
7h 38m
1 stop
DEN2:19 pmDenver Intl
$248

momondo 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, momondo users made 832,500 searches. Data last updated July 8, 2026.
Use the filters below to find and compare flights from Colorado to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Colorado SpringsBoston

COS - BOS

COSBOS

Colorado Springs

Mon 8/10

4:20 pm-12:30 am

1 stop6h 10m

Boston Logan Intl

Wed 8/19

8:15 am-4:35 pm

2 stops10h 20m

$169

Colorado SpringsBoston

COS - BOS

COSBOS

Colorado Springs

Tue 9/22

4:15 pm-12:05 am

1 stop5h 50m

Boston Logan Intl

Wed 9/30

10:05 am-5:00 pm

1 stop8h 55m

$182

Colorado SpringsBoston

COS - BOS

COSBOS

Colorado Springs

Wed 9/9

6:15 am-6:35 pm

2 stops10h 20m

Boston Logan Intl

Sat 9/12

5:40 am-10:00 am

1 stop6h 20m

$187

Colorado SpringsBoston

COS - BOS

COSBOS

Colorado Springs

Tue 9/22

8:00 am-7:52 pm

1 stop9h 52m

Boston Logan Intl

Tue 9/29

8:30 am-4:29 pm

1 stop9h 59m

$218

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Sat 7/25

11:59 pm-10:57 am

1 stop8h 58m

Boston Logan Intl

Wed 7/29

8:41 am-2:19 pm

1 stop7h 38m

$244

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Sat 8/8

11:37 pm-5:30 am

Nonstop3h 53m

Boston Logan Intl

Fri 8/14

10:04 am-11:00 pm

1 stop14h 56m

$245
Quickest round-trip

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Fri 9/25

11:59 pm-6:00 am

Nonstop4h 01m

Boston Logan Intl

Sat 10/3

7:45 am-10:22 am

Nonstop4h 37m

$247

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Mon 8/17

11:59 pm-11:47 am

1 stop9h 48m

Boston Logan Intl

Thu 8/20

6:30 am-9:03 am

Nonstop4h 33m

$248

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Fri 9/4

12:50 pm-10:50 pm

1 stop8h 00m

Boston Logan Intl

Wed 9/9

8:10 am-3:13 pm

1 stop9h 03m

$249

MontroseBoston

MTJ - BOS

MTJBOS

Montrose County

Mon 10/19

1:37 pm-12:59 am

2 stops9h 22m

Boston Logan Intl

Fri 10/23

7:45 am-2:27 pm

1 stop8h 42m

$337

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Boston from

How to get the cheapest flight ticket from Colorado to Boston

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Boston?

In general, January is the cheapest month to fly from Colorado to Boston. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $109. If you aren’t able to travel during the month of January, then book flights to Boston from Colorado during February instead. Flights to Boston in February, while not as cheap as those in January, still average around $128.

What is the cheapest day to depart on your flight to Boston?

The cheapest day to depart from Colorado to Boston is on a Wednesday when prices can be found for as low as $331. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Boston on Monday is $442.

What is the cheapest time of day to depart on your flight to Boston?

According to our data, the cheapest time of day to fly to Boston is in the evening. momondo users have found flights departing from Colorado to Boston in the evening for as low as $306. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the morning is when there is more demand to fly to Boston, so prices are often more expensive at around $423 per ticket.

What is the cheapest Colorado to Boston Logan Intl flight route?

Fly from Denver Intl to Boston Logan Intl for the best Colorado - Boston Logan Intl flight prices

How far in advance should I book a flight from Colorado to Boston?

You are more likely to see cheaper flights to Boston from Colorado when booking weeks ahead of your departure date. In general, you can expect to find flights to Boston for around $347 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boston from Colorado for as low as $292 on momondo.

What cabin class options are available on Colorado to Boston flights?

There are 4 cabin classes available to choose from on Colorado to Boston flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Colorado to Boston flights?

You could potentially save up to 26% on your flight if you consider stops on a Colorado to Boston flight.

Cheap Colorado to Boston flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Colorado to Boston

Best Price Found

$185

Fastest flight time

3h 40m

Direct flights

Every day

Airports in Boston

1 airport
The best one-way flight to Boston from Colorado in the past 72 hours is $185. The best round-trip flight deal from Colorado to Boston found on momondo in the last 72 hours is $346.
The fastest flight from Colorado to Boston takes 3h 40m
Direct flights go from Colorado to Boston every day.
There is 1 airport in Boston. From Colorado there are direct flights to Boston Logan Intl (BOS).
Search flight deals

Frequently asked questions about flying from Colorado to Boston

  • When did momondo last update prices for flights from Colorado to Boston Logan Intl Airport?

    Prices for flights from Colorado to Boston Logan Intl Airport are updated daily.

  • How many operators does momondo search for flights from Colorado to Boston Logan Intl Airport?

  • How old do you have to be to fly from Colorado to Boston Logan Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Colorado to Boston Logan Intl Airport.

  • What documentation or ID do you need to fly to Boston Logan Intl Airport?

    The necessary travel and health documents for your Boston Logan Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Colorado to Boston?

Best airlines flying from Colorado to Boston

Compare and see reviews for airlines that fly from Colorado to Boston with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $115Free CancellationRating
5.6
2,835 reviews
Search Frontier flights
DeltaPriceFrom $124Free CancellationRating
7.8
8,451 reviews
Search Delta flights
JetBluePriceFrom $128Free CancellationRating
7.1
3,012 reviews
Search JetBlue flights
American AirlinesPriceFrom $158Free CancellationRating
7.1
11,783 reviews
Search American Airlines flights
United AirlinesPriceFrom $180Free CancellationRating
7.4
9,945 reviews
Search United Airlines flights
SouthwestPriceFrom $187Free CancellationRating
7.9
4,250 reviews
Search Southwest flights

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Hampton Beach
Salem
Ogunquit
Old Orchard Beach
Hampton
Cambridge
Plymouth
York Beach
Kennebunkport
South Yarmouth
Laconia
Revere
Gloucester
Warwick
Brockton
South Portland
Falmouth
Middletown
Everett
Narragansett

Why use momondo?

Why should I use momondo to find a flight deal from Colorado to Boston?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Boston from Colorado.

Can I find flights from Colorado to Boston with flexible booking policies on momondo?

momondo does allow users to show only those flights to Boston from Colorado which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Colorado to Boston?

Once you have performed a search for Colorado to Boston flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Colorado to Boston right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Colorado to Boston flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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