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Cheap flights from Boston to Kalispell from $158

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 9/16. 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 Boston to Kalispell

Cheap round-trip flights

Alaska Airlines Logo
5:55 pm - 10:18 amBOS-FCA
18h 23m1 stop
Alaska Airlines Logo
4:00 pm - 4:46 pmFCA-BOS
22h 46m1 stop
$316Alaska Airlines
Find Deal
Wed, Jan 21 - Wed, Jan 28
Delta Logo
7:10 am - 1:47 pmBOS-FCA
8h 37m1 stop
Delta Logo
6:10 pm - 6:40 amFCA-BOS
10h 30m1 stop
$317Delta
Find Deal
Tue, Oct 14 - Wed, Oct 22
Delta Logo
5:34 am - 1:47 pmBOS-FCA
10h 13m2 stops
Delta Logo
6:10 pm - 6:40 amFCA-BOS
10h 30m1 stop
$322Delta
Find Deal
Tue, Oct 14 - Sat, Oct 18
Delta Logo
2:39 pm - 12:22 amBOS-FCA
11h 43m2 stops
Delta Logo
5:20 am - 7:21 pmFCA-BOS
12h 01m2 stops
$327Delta
Find Deal
Wed, Sep 24 - Sat, Sep 27
Logo
5:50 am - 4:43 pmBOS-FCA
12h 53m2 stops
Logo
5:33 pm - 11:13 amFCA-BOS
15h 40m2 stops
$336
Find Deal
Thu, Sep 4 - Thu, Sep 11
Logo
10:34 am - 4:43 pmBOS-FCA
32h 09m3 stops
Logo
5:33 pm - 11:13 amFCA-BOS
15h 40m2 stops
$349
Find Deal
Wed, Sep 3 - Thu, Sep 11
United Airlines Logo
3:30 pm - 9:40 pmBOS-FCA
8h 10m1 stop
United Airlines Logo
6:30 am - 6:55 pmFCA-BOS
10h 25m2 stops
$362United Airlines
Find Deal
Tue, Aug 26 - Fri, Sep 5
American Airlines Logo
5:55 am - 2:39 pmBOS-FCA
10h 44m1 stop
American Airlines Logo
11:53 am - 9:53 pmFCA-BOS
8h 00m1 stop
$378American Airlines
Find Deal
Tue, Aug 26 - Thu, Aug 28
American Airlines Logo
6:00 am - 2:39 pmBOS-FCA
10h 39m2 stops
American Airlines Logo
11:53 am - 9:53 pmFCA-BOS
8h 00m1 stop
$383American Airlines
Find Deal
Tue, Aug 26 - Thu, Aug 28
United Airlines Logo
12:30 pm - 7:43 pmBOS-FCA
9h 13m1 stop
United Airlines Logo
2:30 pm - 11:46 pmFCA-BOS
7h 16m1 stop
$406United Airlines
Find Deal
Tue, Aug 26 - Fri, Sep 5

Alaska Airlines flights from Boston to Kalispell

Our best Alaska Airlines deals on Boston to Kalispell flight tickets
Alaska Airlines
Jan 21
BOS5:55 pmBoston Logan Intl
18h 23m
1 stop
FCA10:18 amKalispell Glacier Park
Jan 28
FCA4:00 pmKalispell Glacier Park
22h 46m
1 stop
BOS4:46 pmBoston Logan Intl
$316
Find similar
Alaska Airlines
Sep 22
BOS7:20 amBoston Logan Intl
10h 22m
1 stop
FCA3:42 pmKalispell Glacier Park
Sep 30
FCA8:02 pmKalispell Glacier Park
9h 58m
1 stop
BOS8:00 amBoston Logan Intl
$357
Find similar
Alaska Airlines
Sep 22
BOS6:00 amBoston Logan Intl
9h 30m
1 stop
FCA1:30 pmKalispell Glacier Park
Oct 2
FCA8:02 pmKalispell Glacier Park
9h 58m
1 stop
BOS8:00 amBoston Logan Intl
$358
Find similar

Delta flights from Boston to Kalispell

Our best Delta deals on Boston to Kalispell flight tickets
Delta
Oct 14
BOS7:10 amBoston Logan Intl
8h 37m
1 stop
FCA1:47 pmKalispell Glacier Park
Oct 22
FCA6:10 pmKalispell Glacier Park
10h 30m
1 stop
BOS6:40 amBoston Logan Intl
$317
Find similar
Delta
Oct 14
BOS5:34 amBoston Logan Intl
10h 13m
2 stops
FCA1:47 pmKalispell Glacier Park
Oct 18
FCA6:10 pmKalispell Glacier Park
10h 30m
1 stop
BOS6:40 amBoston Logan Intl
$322
Find similar
Delta
Sep 24
BOS2:39 pmBoston Logan Intl
11h 43m
2 stops
FCA12:22 amKalispell Glacier Park
Sep 27
FCA5:20 amKalispell Glacier Park
12h 01m
2 stops
BOS7:21 pmBoston Logan Intl
$327
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 August 1, 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

Wed 1/21

5:55 pm-10:18 am

1 stop18h 23m

Kalispell Glacier Park

Wed 1/28

4:00 pm-4:46 pm

1 stop22h 46m

$316

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Tue 10/14

7:10 am-1:47 pm

1 stop8h 37m

Kalispell Glacier Park

Wed 10/22

6:10 pm-6:40 am

1 stop10h 30m

$317

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Tue 10/14

5:34 am-1:47 pm

2 stops10h 13m

Kalispell Glacier Park

Sat 10/18

6:10 pm-6:40 am

1 stop10h 30m

$322

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Wed 9/24

2:39 pm-12:22 am

2 stops11h 43m

Kalispell Glacier Park

Sat 9/27

5:20 am-7:21 pm

2 stops12h 01m

$327

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Thu 9/4

5:50 am-4:43 pm

2 stops12h 53m

Kalispell Glacier Park

Thu 9/11

5:33 pm-11:13 am

2 stops15h 40m

$336

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Wed 9/3

10:34 am-4:43 pm

3 stops32h 09m

Kalispell Glacier Park

Thu 9/11

5:33 pm-11:13 am

2 stops15h 40m

$349

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Tue 8/26

3:30 pm-9:40 pm

1 stop8h 10m

Kalispell Glacier Park

Fri 9/5

6:30 am-6:55 pm

2 stops10h 25m

$362

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Tue 8/26

5:55 am-2:39 pm

1 stop10h 44m

Kalispell Glacier Park

Thu 8/28

11:53 am-9:53 pm

1 stop8h 00m

$378

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Tue 8/26

6:00 am-2:39 pm

2 stops10h 39m

Kalispell Glacier Park

Thu 8/28

11:53 am-9:53 pm

1 stop8h 00m

$383

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Tue 8/26

12:30 pm-7:43 pm

1 stop9h 13m

Kalispell Glacier Park

Fri 9/5

2:30 pm-11:46 pm

1 stop7h 16m

$406

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 January is, on average, the cheapest month to fly to Kalispell from Boston, with most prices found around $400. If you aren’t able to travel to Kalispell during the month of January, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $511.

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 $576 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 $435 on momondo.

How have Boston to Kalispell flight prices changed over time?

As of August 2025, prices for Boston to Kalispell flights are approximately 37% 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

Best Price Found

$158

Fastest flight time

7h 29m

Direct flights

None

Airports in Kalispell

1 airport
The best one-way flight to Kalispell from Boston in the past 72 hours is $158. The best round-trip flight deal from Boston to Kalispell found on momondo in the last 72 hours is $316.
The fastest flight from Boston to Kalispell takes 7h 29m
There are no direct flights from Boston to Kalispell. Popular non-direct route for this connection is Boston Logan Intl Airport - Kalispell Glacier Park Airport.
There is 1 airport near Kalispell: Kalispell Glacier Park (FCA)
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 38m.

  • 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 $303Free CancellationRating
8.0
7,981 reviews
Search Delta flights
American AirlinesPriceFrom $331Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $362Free CancellationRating
7.4
8,900 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $378Free CancellationRating
8.0
10,000 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
Essex
Eureka
Cut Bank

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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