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Cheap flights from Colorado to Boston from $89

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 4/28. 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
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
5:41 am - 2:23 pm
COS
-
BOS
6h 42m
1 stop
American Airlines Logo
6:00 am - 12:49 pm
BOS
-
COS
8h 49m
1 stop
$177American Airlines
Tue, Apr 21 - Tue, Apr 28
Southwest Logo
6:35 am - 4:05 pm
DEN
-
BOS
7h 30m
1 stop
Southwest Logo
5:35 am - 8:05 am
BOS
-
DEN
4h 30mnonstop
$183Southwest
Tue, Apr 21 - Tue, Apr 28
Frontier Logo
1:09 pm - 1:31 am
DEN
-
BOS
10h 22m
1 stop
Frontier Logo
12:55 pm - 10:29 pm
BOS
-
DEN
11h 34m
1 stop
$184Frontier
Sat, Apr 18 - Wed, Apr 22
Frontier Logo
1:09 pm - 1:31 am
DEN
-
BOS
10h 22m
1 stop
Frontier Logo
12:42 pm - 10:29 pm
BOS
-
DEN
11h 47m
1 stop
$185Frontier
Tue, Apr 28 - Fri, May 1
Frontier Logo
11:59 pm - 11:25 am
DEN
-
BOS
9h 26m
1 stop
Frontier Logo
8:44 am - 2:32 pm
BOS
-
DEN
7h 48m
1 stop
$186Frontier
Sat, May 2 - Wed, May 6
Multiple Airlines Logo
11:31 pm - 5:19 am
DEN
-
BOS
3h 48mnonstop
Multiple Airlines Logo
6:00 am - 12:09 pm
BOS
-
DEN
8h 09m
1 stop
$194Multiple Airlines
Mon, Apr 13 - Wed, Apr 15
United Airlines Logo
7:15 am - 3:37 pm
MTJ
-
BOS
6h 22m
1 stop
United Airlines Logo
9:30 am - 8:20 pm
BOS
-
MTJ
12h 50m
2 stops
$282United Airlines
Wed, Apr 15 - Sat, Apr 25
United Airlines Logo
1:20 pm - 12:59 am
HDN
-
BOS
9h 39m
2 stops
United Airlines Logo
7:45 am - 12:24 pm
BOS
-
HDN
6h 39m
1 stop
$282United Airlines
Wed, May 27 - Sat, May 30
Delta Logo
6:51 pm - 6:20 am
GJT
-
BOS
9h 29m
1 stop
Delta Logo
8:15 am - 6:10 pm
BOS
-
GJT
11h 55m
2 stops
$339Delta
Wed, May 27 - Wed, Jun 10
Delta Logo
7:36 am - 11:06 pm
ASE
-
BOS
13h 30m
2 stops
Delta Logo
5:30 am - 11:23 am
BOS
-
ASE
7h 53m
1 stop
$423Delta
Tue, Jun 30 - Tue, Jul 7

Southwest flights from Colorado to Boston

Our best Southwest deals on Colorado to Boston flight tickets
Southwest
Apr 21
DEN6:35 amDenver Intl
7h 30m
1 stop
BOS4:05 pmBoston Logan Intl
Apr 28
BOS5:35 amBoston Logan Intl
4h 30m
DEN8:05 amDenver Intl
$183
Southwest
Apr 21
DEN10:55 amDenver Intl
9h 45m
2 stops
BOS10:40 pmBoston Logan Intl
Apr 28
BOS5:35 amBoston Logan Intl
4h 30m
DEN8:05 amDenver Intl
$188
Southwest
May 4
DEN7:00 pmDenver Intl
3h 50m
BOS12:50 amBoston Logan Intl
May 12
BOS5:35 amBoston Logan Intl
4h 30m
DEN8:05 amDenver Intl
$190

Frontier flights from Colorado to Boston

Our best Frontier deals on Colorado to Boston flight tickets
Frontier
Apr 18
DEN1:09 pmDenver Intl
10h 22m
1 stop
BOS1:31 amBoston Logan Intl
Apr 22
BOS12:55 pmBoston Logan Intl
11h 34m
1 stop
DEN10:29 pmDenver Intl
$184
Frontier
Apr 28
DEN1:09 pmDenver Intl
10h 22m
1 stop
BOS1:31 amBoston Logan Intl
Apr 30
BOS12:31 pmBoston Logan Intl
13h 28m
1 stop
DEN11:59 pmDenver Intl
$185
Frontier
May 2
DEN11:59 pmDenver Intl
9h 26m
1 stop
BOS11:25 amBoston Logan Intl
May 6
BOS8:44 amBoston Logan Intl
7h 48m
1 stop
DEN2:32 pmDenver Intl
$186

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 March 24, 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

Tue 4/21

5:41 am-2:23 pm

1 stop6h 42m

Boston Logan Intl

Tue 4/28

6:00 am-12:49 pm

1 stop8h 49m

$177

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Tue 4/21

6:35 am-4:05 pm

1 stop7h 30m

Boston Logan Intl

Tue 4/28

5:35 am-8:05 am

Nonstop4h 30m

$183

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Sat 4/18

1:09 pm-1:31 am

1 stop10h 22m

Boston Logan Intl

Wed 4/22

12:55 pm-10:29 pm

1 stop11h 34m

$184

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Tue 4/28

1:09 pm-1:31 am

1 stop10h 22m

Boston Logan Intl

Fri 5/1

12:42 pm-10:29 pm

1 stop11h 47m

$185

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Sat 5/2

11:59 pm-11:25 am

1 stop9h 26m

Boston Logan Intl

Wed 5/6

8:44 am-2:32 pm

1 stop7h 48m

$186
Quickest round-trip

DenverBoston

DEN - BOS

DENBOS

Denver Intl

Mon 4/13

11:31 pm-5:19 am

Nonstop3h 48m

Boston Logan Intl

Wed 4/15

6:00 am-12:09 pm

1 stop8h 09m

$194

MontroseBoston

MTJ - BOS

MTJBOS

Montrose County

Wed 4/15

7:15 am-3:37 pm

1 stop6h 22m

Boston Logan Intl

Sat 4/25

9:30 am-8:20 pm

2 stops12h 50m

$282

HaydenBoston

HDN - BOS

HDNBOS

Hayden Yampa Valley

Wed 5/27

1:20 pm-12:59 am

2 stops9h 39m

Boston Logan Intl

Sat 5/30

7:45 am-12:24 pm

1 stop6h 39m

$282

Grand JunctionBoston

GJT - BOS

GJTBOS

Grand Junction Regnl

Wed 5/27

6:51 pm-6:20 am

1 stop9h 29m

Boston Logan Intl

Wed 6/10

8:15 am-6:10 pm

2 stops11h 55m

$339

AspenBoston

ASE - BOS

ASEBOS

Aspen Pitkin County

Tue 6/30

7:36 am-11:06 pm

2 stops13h 30m

Boston Logan Intl

Tue 7/7

5:30 am-11:23 am

1 stop7h 53m

$423

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 $277. If you aren’t able to travel during the month of January, then book flights to Boston from Colorado during April instead. Flights to Boston in April, while not as cheap as those in January, still average around $297.

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 $303. 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 $399.

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 $276. 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 $361 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 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 $318 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 $278 on momondo.

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

There are 4 cabin classes available to choose from on Colorado to Boston Logan Intl 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

$169

Fastest flight time

3h 48m

Direct flights

Every day

Airports in Boston

1 airport
The best one-way flight to Boston from Colorado in the past 72 hours is $169. The best round-trip flight deal from Colorado to Boston found on momondo in the last 72 hours is $267.
The fastest flight from Colorado to Boston takes 3h 48m
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

  • 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 $95Free CancellationRating
5.7
3,017 reviews
Search Frontier flights
JetBluePriceFrom $118Free CancellationRating
7.2
2,905 reviews
Search JetBlue flights
DeltaPriceFrom $125Free CancellationRating
7.9
8,324 reviews
Search Delta flights
American AirlinesPriceFrom $158Free CancellationRating
7.1
11,491 reviews
Search American Airlines flights
United AirlinesPriceFrom $177Free CancellationRating
7.4
9,471 reviews
Search United Airlines flights
SouthwestPriceFrom $185Free CancellationRating
8.0
4,331 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
York Beach
Kennebunkport
Plymouth
Cambridge
South Yarmouth
Narragansett
Gloucester
Falmouth
Brockton
Warwick
Chatham
Laconia
Nashua
Sturbridge
Everett

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.

An easier way to manage your Boston trip

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