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Kalispell

$190+ Cheap flights from Boston to Kalispell (BOS - FCA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — FCA
Aug 31 — Sep 71
Mon 8/31
Mon 9/7
1 adult, Economy
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Cheap flight deals from Boston to Kalispell

Cheapest flights from Boston to Kalispell
Explore the most affordable flight options available from Boston to Kalispell. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2026.

This American Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/288:27 am
BOS
-
FCA
1 stop9h 43m
American Airlines
Fri 9/41:32 pm
FCA
-
BOS
1 stop7h 18m
American Airlines
Deal found 7/29$379
This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/267:30 am
BOS
-
FCA
2 stops10h 24m
United Airlines
Wed 9/23:58 pm
FCA
-
BOS
1 stop7h 13m
United Airlines
Deal found 7/27$384
This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2410:38 am
BOS
-
FCA
1 stop10h 16m
United Airlines
Wed 8/263:58 pm
FCA
-
BOS
1 stop7h 13m
United Airlines
Deal found 7/28$399
This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/166:00 am
BOS
-
FCA
1 stop7h 28m
United Airlines
Mon 10/1912:26 pm
FCA
-
BOS
1 stop8h 58m
United Airlines
Deal found 7/27$400
This United Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2812:41 pm
BOS
-
FCA
2 stops10h 40m
United Airlines
Fri 9/43:58 pm
FCA
-
BOS
1 stop7h 13m
United Airlines
Deal found 7/29$413
This American Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/256:00 am
BOS
-
FCA
1 stop10h 33m
American Airlines
Tue 9/291:02 pm
FCA
-
BOS
1 stop8h 32m
American Airlines
Deal found 7/31$424
This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2812:41 pm
BOS
-
FCA
2 stops10h 40m
United Airlines
Tue 9/13:58 pm
FCA
-
BOS
1 stop7h 13m
United Airlines
Deal found 7/28$431
This Delta deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/197:10 am
BOS
-
FCA
1 stop8h 57m
Delta
Wed 8/265:15 am
FCA
-
BOS
2 stops16h 27m
Delta
Deal found 7/27$432
This Delta deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:05 am
BOS
-
FCA
1 stop7h 42m
Delta
Tue 9/226:00 pm
FCA
-
BOS
1 stop10h 30m
Delta
Deal found 7/31$439

Find flight deals from Boston to Kalispell

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Kalispell (FCA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$379
(American Airlines)

One-way from

$190
(Delta)

Popular in

December

Cheapest in

October

Average price

$613
Provider with most accurate pricing for Boston Logan Intl-Kalispell Glacier Park flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Kalispell Glacier Park flights.
Search Deals
From Boston Logan Intl to Kalispell Glacier Park
Search Deals
One-way flight from Boston Logan Intl to Kalispell Glacier Park
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($79 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated August 1, 2026.
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

Cheapest round-trip
Quickest round-trip

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Tue 9/15

6:05 am-11:47 am

1 stop7h 42m

Kalispell Glacier Park

Tue 9/22

2:40 pm-11:59 pm

1 stop7h 19m

$449

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Wed 9/16

7:20 am-9:21 pm

2 stops16h 01m

Kalispell Glacier Park

Fri 9/25

6:05 am-10:45 pm

2 stops14h 40m

$499

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Mon 8/24

9:00 am-9:21 pm

2 stops14h 21m

Kalispell Glacier Park

Wed 8/26

7:15 am-9:59 pm

2 stops12h 44m

$499

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Tue 10/27

7:51 am-1:23 pm

2 stops31h 32m

Kalispell Glacier Park

Fri 10/30

2:03 pm-11:59 pm

1 stop7h 56m

$516

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Sat 10/3

6:05 am-11:47 am

1 stop7h 42m

Kalispell Glacier Park

Fri 10/9

6:13 pm-7:35 am

2 stops11h 22m

$536

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Tue 10/27

4:46 pm-12:23 pm

2 stops21h 37m

Kalispell Glacier Park

Thu 10/29

2:03 pm-11:59 pm

1 stop7h 56m

$541

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Sat 9/12

7:45 am-3:21 pm

1 stop9h 36m

Kalispell Glacier Park

Tue 9/15

10:50 am-1:10 am

2 stops12h 20m

$569

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Tue 10/27

12:14 pm-9:51 pm

2 stops11h 37m

Kalispell Glacier Park

Thu 10/29

6:14 am-6:34 pm

2 stops10h 20m

$574

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Sat 10/3

7:51 am-10:59 pm

2 stops17h 08m

Kalispell Glacier Park

Fri 10/9

7:45 pm-11:59 pm

1 stop26h 14m

$601

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Tue 8/11

8:00 am-3:17 pm

1 stop9h 17m

Kalispell Glacier Park

Fri 8/14

3:58 pm-1:11 am

1 stop7h 13m

$610

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/1

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

Compare providers for flights from Boston to Kalispell

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to Kalispell in August.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boston-Kalispell flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-Kalispell flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-Kalispell flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-Kalispell flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-Kalispell flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Boston to Kalispell

Have a flexible travel schedule? Discover the best time to fly to Kalispell from Boston with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Boston to Kalispell

How far ahead should I book a flight from Boston to Kalispell?

To ensure you get the cheapest price possible for a flight from Boston to Kalispell, you should look to book at least 12 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Boston to Kalispell?

Currently, October is the cheapest month in which you can book a flight from Boston to Kalispell (average of $412). Flying from Boston to Kalispell in December is currently the most expensive (average of $1,042). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Boston to Kalispell?

Airfare is below average for this route at the moment.

Boston to Kalispell flights typically cost between $490 and $746 in August.
The cheapest round-trip price found within the last 5 days was $379 on American Airlines (Aug 28-Sep 4).

Reviews of airlines servicing Kalispell

Get insights into the airlines that provide service to Kalispell. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Kalispell. Reviews last updated August 1, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines,Delta, andUnited Airlines from Boston to Kalispell to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,749 reviews

Food

7.0

Comfort

7.8

Overall

7.9

Boarding

8.1

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.
Alaska Airlines
7.9
Good
12,749 reviews
Alaska Airlines
7.9
Good
12,749 reviews

Food

7.0

Comfort

7.8

Overall

7.9

Boarding

8.1

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.
Delta
7.8
Good
8,493 reviews
Alaska Airlines
7.9
Good
12,749 reviews

Food

7.0

Comfort

7.8

Overall

7.9

Boarding

8.1

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.
United Airlines
7.4
Good
10,061 reviews
Alaska Airlines
7.9
Good
12,749 reviews

Food

7.0

Comfort

7.8

Overall

7.9

Boarding

8.1

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.
American Airlines
7.1
Good
11,846 reviews
Alaska Airlines
7.9
Good
12,749 reviews

Food

7.0

Comfort

7.8

Overall

7.9

Boarding

8.1

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.

Related info for your journey

Find useful and relevant information for your journey from Boston to Kalispell. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Boston to Kalispell?

    A quick flight from Boston to Kalispell can take about 7h 42m. Delta provides one of the quickest options available for as low as $449. The distance from Boston to Kalispell is about 2110 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Boston to Kalispell round-trip?

    Our cheapest airline available from Boston to Kalispell is United Airlines. Our recent data shows that you can find tickets from as low as $316 on this airline. Additional options worth looking into are Alaska Airlines and American Airlines, starting at $346 and $356 round-trip. United Airlines is 49% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Boston to Kalispell one-way?

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $148. American Airlines flights start at $158 while deals on United Airlines start at $188 one-way.

  • Can I find deals for flights from Boston to Kalispell that include hotel bookings?

    Yes. In addition to deals on Boston to Kalispell flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to Kalispell?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Kalispell.

  • Can I find deals for business class flights from Boston to Kalispell?

    Yes. Cheapflights offers flight deals from Boston to Kalispell by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Boston to Kalispell?

    Currently, October is the cheapest month in which you can book a flight from Boston to Kalispell (average of $412). Flying from Boston to Kalispell in December is currently the most expensive (average of $1,042). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Kalispell?

Book flights to Kalispell if you plan to visit one of these locations
Columbia Falls
East Glacier Park

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Top 4 airlines flying from Boston to Kalispell

Discover the top 4 airlines that operate flights from Boston to Kalispell. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$316Average$620FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$346Average$558FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$356Average$585FlexibilityNo cancel feeOn-time71%
DeltaCheapest$356Average$571FlexibilityNo cancel feeOn-timeN/A

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