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Cheap flights from Kalispell to Boston from $149

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Kalispell to Boston departing on 1/8. 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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Find the cheapest flights from Kalispell to Boston

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
5:05 am - 2:36 pm
FCA
-
BOS
7h 31m1 stop
Delta Logo
4:25 pm - 11:18 pm
BOS
-
FCA
8h 53m1 stop
$297Delta
Sat, Jan 10 - Sat, Jan 17
United Airlines Logo
2:42 pm - 11:52 pm
FCA
-
BOS
7h 10m1 stop
United Airlines Logo
10:30 am - 11:20 pm
BOS
-
FCA
14h 50m2 stops
$302United Airlines
Sat, Jan 10 - Sat, Jan 17
United Airlines Logo
2:42 pm - 11:46 pm
FCA
-
BOS
7h 04m1 stop
United Airlines Logo
3:15 pm - 9:59 pm
BOS
-
FCA
8h 44m1 stop
$397United Airlines
Wed, Jan 21 - Sat, Jan 24
United Airlines Logo
2:42 pm - 11:46 pm
FCA
-
BOS
7h 04m1 stop
United Airlines Logo
12:45 pm - 9:59 pm
BOS
-
FCA
11h 14m2 stops
$402United Airlines
Wed, Jan 21 - Sat, Jan 24
United Airlines Logo
6:00 am - 6:32 pm
FCA
-
BOS
10h 32m2 stops
United Airlines Logo
10:30 am - 9:59 pm
BOS
-
FCA
13h 29m2 stops
$407United Airlines
Wed, Jan 21 - Sat, Jan 24
United Airlines Logo
7:00 am - 9:38 pm
FCA
-
BOS
12h 38m2 stops
United Airlines Logo
12:45 pm - 11:20 pm
BOS
-
FCA
12h 35m2 stops
$419United Airlines
Sat, Jan 10 - Sat, Jan 17
United Airlines Logo
6:31 am - 6:13 pm
FCA
-
BOS
9h 42m2 stops
United Airlines Logo
10:44 am - 9:30 pm
BOS
-
FCA
12h 46m2 stops
$452United Airlines
Fri, May 8 - Tue, May 12
United Airlines Logo
2:42 pm - 11:46 pm
FCA
-
BOS
7h 04m1 stop
United Airlines Logo
3:15 pm - 9:59 pm
BOS
-
FCA
8h 44m1 stop
$514United Airlines
Tue, Jan 6 - Sun, Jan 11
United Airlines Logo
2:42 pm - 11:46 pm
FCA
-
BOS
7h 04m1 stop
United Airlines Logo
9:30 am - 9:59 pm
BOS
-
FCA
14h 29m2 stops
$519United Airlines
Tue, Jan 6 - Sun, Jan 11
United Airlines Logo
1:39 pm - 12:53 am
FCA
-
BOS
9h 14m1 stop
United Airlines Logo
6:01 am - 11:42 am
BOS
-
FCA
7h 41m1 stop
$525United Airlines
Wed, Dec 24 - Wed, Dec 31

Alaska Airlines flights from Kalispell to Boston

Our best Alaska Airlines deals on Kalispell to Boston flight tickets
Alaska Airlines
Jan 8
FCA7:46 pmKalispell Glacier Park
17h 34m
2 stops
BOS3:20 pmBoston Logan Intl
Jan 15
BOS6:44 pmBoston Logan Intl
44h 30m
2 stops
FCA1:14 pmKalispell Glacier Park
$572
Find similar
Alaska Airlines
Jan 8
FCA7:46 pmKalispell Glacier Park
26h 08m
1 stop
BOS11:54 pmBoston Logan Intl
Jan 15
BOS5:20 pmBoston Logan Intl
21h 54m
1 stop
FCA1:14 pmKalispell Glacier Park
$576
Find similar
Alaska Airlines
Jan 6
FCA12:58 pmKalispell Glacier Park
32h 56m
2 stops
BOS11:54 pmBoston Logan Intl
Jan 11
BOS5:20 pmBoston Logan Intl
20h 54m
2 stops
FCA12:14 pmKalispell Glacier Park
$624
Find similar

United Airlines flights from Kalispell to Boston

Our best United Airlines deals on Kalispell to Boston flight tickets
United Airlines
Jan 10
FCA2:42 pmKalispell Glacier Park
7h 10m
1 stop
BOS11:52 pmBoston Logan Intl
Jan 17
BOS10:30 amBoston Logan Intl
14h 50m
2 stops
FCA11:20 pmKalispell Glacier Park
$302
Find similar
United Airlines
Jan 21
FCA2:42 pmKalispell Glacier Park
7h 04m
1 stop
BOS11:46 pmBoston Logan Intl
Jan 24
BOS3:15 pmBoston Logan Intl
8h 44m
1 stop
FCA9:59 pmKalispell Glacier Park
$397
Find similar
United Airlines
Jan 21
FCA2:42 pmKalispell Glacier Park
7h 04m
1 stop
BOS11:46 pmBoston Logan Intl
Jan 24
BOS12:45 pmBoston Logan Intl
11h 14m
2 stops
FCA9:59 pmKalispell Glacier Park
$402
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Kalispell 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 December 11, 2025.
Use the filters below to find and compare flights from Kalispell to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Sat 1/10

5:05 am-2:36 pm

1 stop7h 31m

Boston Logan Intl

Sat 1/17

4:25 pm-11:18 pm

1 stop8h 53m

$297

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Sat 1/10

2:42 pm-11:52 pm

1 stop7h 10m

Boston Logan Intl

Sat 1/17

10:30 am-11:20 pm

2 stops14h 50m

$302

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Wed 1/21

2:42 pm-11:46 pm

1 stop7h 04m

Boston Logan Intl

Sat 1/24

3:15 pm-9:59 pm

1 stop8h 44m

$397

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Wed 1/21

2:42 pm-11:46 pm

1 stop7h 04m

Boston Logan Intl

Sat 1/24

12:45 pm-9:59 pm

2 stops11h 14m

$402

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Wed 1/21

6:00 am-6:32 pm

2 stops10h 32m

Boston Logan Intl

Sat 1/24

10:30 am-9:59 pm

2 stops13h 29m

$407

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Sat 1/10

7:00 am-9:38 pm

2 stops12h 38m

Boston Logan Intl

Sat 1/17

12:45 pm-11:20 pm

2 stops12h 35m

$419

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Fri 5/8

6:31 am-6:13 pm

2 stops9h 42m

Boston Logan Intl

Tue 5/12

10:44 am-9:30 pm

2 stops12h 46m

$452

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Tue 1/6

2:42 pm-11:46 pm

1 stop7h 04m

Boston Logan Intl

Sun 1/11

3:15 pm-9:59 pm

1 stop8h 44m

$514

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Tue 1/6

2:42 pm-11:46 pm

1 stop7h 04m

Boston Logan Intl

Sun 1/11

9:30 am-9:59 pm

2 stops14h 29m

$519

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Wed 12/24

1:39 pm-12:53 am

1 stop9h 14m

Boston Logan Intl

Wed 12/31

6:01 am-11:42 am

1 stop7h 41m

$525

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Kalispell 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 Kalispell to Boston. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $428. If you aren’t able to travel during the month of January, then book flights to Boston from Kalispell during August instead. Flights to Boston in August, while not as cheap as those in January, still average around $448.

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

The cheapest day to depart from Kalispell to Boston is on a Monday when prices can be found for as low as $503. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Boston on Sunday is $846.

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 at noon. momondo users have found flights departing from Kalispell to Boston at noon for as low as $518. 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 $653 per ticket.

Can stopping save me money on Kalispell to Boston flights?

You could potentially save up to 14% on your flight if you consider stops on a Kalispell to Boston flight.

How have Kalispell to Boston flight prices changed over time?

As of December 2025, prices for Kalispell to Boston flights are approximately 16% more expensive when compared to flights at the same time last year.

When to book flights from Kalispell to Boston

Are you open to changing your travel dates? Check out the ideal times to fly from Kalispell to Boston according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Kalispell to Boston (FCA to BOS) flight deals and tips

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

Fastest flight time

6h 31m

Direct flights

None
The fastest flight from Kalispell to Boston takes 6h 31m
There are no direct flights from Kalispell to Boston. There are no popular flight routes from Kalispell to Boston.
Search flight deals

  • How far is Kalispell Glacier Park to Boston Logan Intl by plane?

    Kalispell Glacier Park and Boston Logan Intl are 2110.7 mi apart from one another. 6h 31m is a normal flight duration for this route.

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

    Prices for flights from Kalispell Glacier Park Airport to Boston Logan Intl Airport were last updated today.

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

  • How old do you have to be to fly from Kalispell Glacier Park Airport to Boston Logan Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Kalispell Glacier Park Airport to Boston Logan Intl Airport.

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

    The travel and health documents you'll need for your trip to Boston Logan Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Boston Logan Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Kalispell to Boston?

Best airlines flying from Kalispell to Boston

Compare and see reviews for airlines that fly from Kalispell to Boston with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $302Free CancellationRating
7.9
8,008 reviews
Search Delta flights
United AirlinesPriceFrom $388Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $397Free CancellationRating
8.0
11,432 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $405Free CancellationRating
7.2
11,050 reviews
Search American Airlines 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
Plymouth
Kennebunkport
South Yarmouth
Cambridge
Narragansett
Gloucester
Nashua
Falmouth
Laconia
Brockton
Concord
Everett
Sturbridge
Chatham

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Kalispell to Boston. Millions of users trust and use momondo every year so you are in good hands.

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

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

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

Once all potential Kalispell to Boston flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to Boston, momondo offers a useful price alert feature which will track prices for flights to Boston from Kalispell and alert you when they change.

An easier way to manage your Boston trip

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