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Cheap flights from Boston to Kalispell 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 Boston to Kalispell departing on 1/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Boston to Kalispell

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
7:00 am - 5:51 pm
BOS
-
FCA
12h 51m1 stop
Alaska Airlines Logo
1:53 pm - 11:54 pm
FCA
-
BOS
8h 01m1 stop
$296Alaska Airlines
Tue, Apr 7 - Tue, Apr 14
Delta Logo
5:50 am - 1:28 pm
BOS
-
FCA
9h 38m1 stop
Delta Logo
5:25 am - 5:19 pm
FCA
-
BOS
9h 54m2 stops
$302Delta
Tue, Apr 7 - Tue, Apr 14
Delta Logo
5:25 am - 1:28 pm
BOS
-
FCA
10h 03m2 stops
Delta Logo
6:12 pm - 10:03 am
FCA
-
BOS
13h 51m2 stops
$307Delta
Tue, Apr 7 - Tue, Apr 14
Delta Logo
5:40 am - 1:45 pm
BOS
-
FCA
10h 05m1 stop
Delta Logo
6:12 pm - 6:09 am
FCA
-
BOS
9h 57m1 stop
$313Delta
Wed, Jun 3 - Sat, Jun 6
United Airlines Logo
3:15 pm - 9:59 pm
BOS
-
FCA
8h 44m1 stop
United Airlines Logo
2:42 pm - 11:46 pm
FCA
-
BOS
7h 04m1 stop
$326United Airlines
Sat, Jan 24 - Fri, Jan 30
United Airlines Logo
9:30 am - 11:20 pm
BOS
-
FCA
15h 50m2 stops
United Airlines Logo
2:42 pm - 11:46 pm
FCA
-
BOS
7h 04m1 stop
$331United Airlines
Sat, Jan 24 - Fri, Jan 30
Alaska Airlines Logo
7:00 am - 7:06 pm
BOS
-
FCA
14h 06m1 stop
Alaska Airlines Logo
7:46 pm - 4:20 pm
FCA
-
BOS
18h 34m1 stop
$342Alaska Airlines
Wed, Jan 21 - Wed, Jan 28
Alaska Airlines Logo
5:20 pm - 12:14 pm
BOS
-
FCA
20h 54m2 stops
Alaska Airlines Logo
12:54 pm - 3:20 pm
FCA
-
BOS
24h 26m1 stop
$365Alaska Airlines
Wed, Jan 21 - Wed, Jan 28
United Airlines Logo
10:30 am - 9:59 pm
BOS
-
FCA
13h 29m2 stops
United Airlines Logo
6:00 am - 6:57 pm
FCA
-
BOS
10h 57m2 stops
$372United Airlines
Sat, Jan 24 - Fri, Jan 30
Delta Logo
5:40 am - 1:45 pm
BOS
-
FCA
10h 05m1 stop
Delta Logo
6:12 pm - 6:09 am
FCA
-
BOS
9h 57m1 stop
$378Delta
Thu, Jun 4 - Sat, Jun 6

Delta flights from Boston to Kalispell

Our best Delta deals on Boston to Kalispell flight tickets
Delta
Apr 7
BOS5:50 amBoston Logan Intl
9h 38m
1 stop
FCA1:28 pmKalispell Glacier Park
Apr 14
FCA5:25 amKalispell Glacier Park
9h 54m
2 stops
BOS5:19 pmBoston Logan Intl
$302
Find similar
Delta
Apr 7
BOS5:25 amBoston Logan Intl
10h 03m
2 stops
FCA1:28 pmKalispell Glacier Park
Apr 14
FCA6:12 pmKalispell Glacier Park
13h 51m
2 stops
BOS10:03 amBoston Logan Intl
$307
Find similar
Delta
Jun 3
BOS5:40 amBoston Logan Intl
10h 05m
1 stop
FCA1:45 pmKalispell Glacier Park
Jun 6
FCA6:12 pmKalispell Glacier Park
9h 57m
1 stop
BOS6:09 amBoston Logan Intl
$313
Find similar

United Airlines flights from Boston to Kalispell

Our best United Airlines deals on Boston to Kalispell flight tickets
United Airlines
Jan 24
BOS3:15 pmBoston Logan Intl
8h 44m
1 stop
FCA9:59 pmKalispell Glacier Park
Jan 30
FCA2:42 pmKalispell Glacier Park
7h 04m
1 stop
BOS11:46 pmBoston Logan Intl
$326
Find similar
United Airlines
Jan 24
BOS9:30 amBoston Logan Intl
15h 50m
2 stops
FCA11:20 pmKalispell Glacier Park
Jan 30
FCA2:42 pmKalispell Glacier Park
7h 04m
1 stop
BOS11:46 pmBoston Logan Intl
$331
Find similar
United Airlines
Jan 24
BOS10:30 amBoston Logan Intl
13h 29m
2 stops
FCA9:59 pmKalispell Glacier Park
Jan 30
FCA6:00 amKalispell Glacier Park
10h 57m
2 stops
BOS6:57 pmBoston Logan Intl
$372
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Boston to Kalispell 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 18, 2025.
Use the filters below to find and compare flights from Boston to Kalispell that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Tue 4/7

7:00 am-5:51 pm

1 stop12h 51m

Kalispell Glacier Park

Tue 4/14

1:53 pm-11:54 pm

1 stop8h 01m

$296

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Tue 4/7

5:50 am-1:28 pm

1 stop9h 38m

Kalispell Glacier Park

Tue 4/14

5:25 am-5:19 pm

2 stops9h 54m

$302

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Tue 4/7

5:25 am-1:28 pm

2 stops10h 03m

Kalispell Glacier Park

Tue 4/14

6:12 pm-10:03 am

2 stops13h 51m

$307

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Wed 6/3

5:40 am-1:45 pm

1 stop10h 05m

Kalispell Glacier Park

Sat 6/6

6:12 pm-6:09 am

1 stop9h 57m

$313

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Sat 1/24

3:15 pm-9:59 pm

1 stop8h 44m

Kalispell Glacier Park

Fri 1/30

2:42 pm-11:46 pm

1 stop7h 04m

$326

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Sat 1/24

9:30 am-11:20 pm

2 stops15h 50m

Kalispell Glacier Park

Fri 1/30

2:42 pm-11:46 pm

1 stop7h 04m

$331

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Wed 1/21

7:00 am-7:06 pm

1 stop14h 06m

Kalispell Glacier Park

Wed 1/28

7:46 pm-4:20 pm

1 stop18h 34m

$342

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Wed 1/21

5:20 pm-12:14 pm

2 stops20h 54m

Kalispell Glacier Park

Wed 1/28

12:54 pm-3:20 pm

1 stop24h 26m

$365

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Sat 1/24

10:30 am-9:59 pm

2 stops13h 29m

Kalispell Glacier Park

Fri 1/30

6:00 am-6:57 pm

2 stops10h 57m

$372

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Thu 6/4

5:40 am-1:45 pm

1 stop10h 05m

Kalispell Glacier Park

Sat 6/6

6:12 pm-6:09 am

1 stop9h 57m

$378

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 Kalispell from

How to get the cheapest flight ticket from Boston to Kalispell

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 Kalispell?

The month of November is, on average, the cheapest month to fly to Kalispell from Boston, with most prices found around $410. If you aren’t able to travel to Kalispell during the month of November, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $420.

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

The cheapest day to depart from Boston to Kalispell is on a Tuesday. Travelers who choose to depart for Kalispell on a Tuesday will often find tickets for as low as $573. The most expensive day to fly to Kalispell is Sunday, with ticket prices averaging around $717.

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

According to our data, the cheapest time of day to fly to Kalispell is at noon. momondo users have found flights departing from Boston to Kalispell at noon for as low as $516. 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 afternoon is when there is more demand to fly to Kalispell, so prices are often more expensive at around $676 per ticket.

How far in advance should I book a flight to Kalispell?

You are more likely to see cheaper flights to Kalispell from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Kalispell for around $580 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Kalispell from Boston for as low as $449 on momondo.

How have Boston to Kalispell flight prices changed over time?

As of December 2025, prices for Boston to Kalispell flights are approximately 31% cheaper when compared to flights at the same time last year.

When to book flights from Boston to Kalispell

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

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

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

Fastest flight time

7h 41m

Direct flights

None
The fastest flight from Boston to Kalispell takes 7h 41m
There are no direct flights from Boston to Kalispell. There are no popular flight routes from Boston to Kalispell.
Search flight deals

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

    Kalispell Glacier Park is 2110.7 mi away from Boston Logan Intl. By plane, this route typically takes 7h 41m.

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

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

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to Kalispell Glacier Park Airport.

  • What documentation or ID do you need to fly to Kalispell Glacier Park Airport?

    The travel and health documents you'll need for your trip to Kalispell Glacier Park 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 Kalispell Glacier Park 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 Boston to Kalispell?

Best airlines flying from Boston to Kalispell

Compare and see reviews for airlines that fly from Boston to Kalispell with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $316Free CancellationRating
7.9
8,005 reviews
Search Delta flights
American AirlinesPriceFrom $332Free CancellationRating
7.2
11,054 reviews
Search American Airlines flights
Hawaiian AirlinesPriceFrom $332Free CancellationRating
7.8
2,820 reviews
Search Hawaiian Airlines flights
United AirlinesPriceFrom $360Free CancellationRating
7.4
9,091 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $370Free CancellationRating
8.0
11,477 reviews
Search Alaska Airlines flights

Traveling to a place near Kalispell?

Book flights to Kalispell if you plan to visit one of these locations
Whitefish
Columbia Falls
Polson
East Glacier Park
Cut Bank
Essex
Eureka

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Boston to Kalispell for you.

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

All flight searches from Boston to Kalispell on momondo can be filtered to show those which offer flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Boston to Kalispell.

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

Of course. momondo tracks the price of Boston to Kalispell flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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