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$149+ 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 1/27. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — FCA
Feb 5 — Feb 121
Thu 2/5
Thu 2/12
1 adult, Economy
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Cheap 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 January 6, 2026.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$297
(Alaska Airlines)

One-way from

$149
(Delta)

Popular in

December

Cheapest in

November

Average price

$473
Provider with most accurate pricing for Boston Logan Intl-Kalispell Glacier Park flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-Kalispell Glacier Park flights.
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From Boston Logan Intl to Kalispell Glacier Park
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One-way flight from Boston Logan Intl to Kalispell Glacier Park
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Highest demand for flights based on searches. 8% potential increase in price ($55 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($42 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find 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 January 6, 2026.

This Delta deal was found by Cheapflights users on 1/5. 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 4/75:50 amBOS - FCA
1 stop9h 38mDelta
Tue 4/142:49 pmFCA - BOS
1 stop6h 52mDelta
Deal found 1/5$297
This Delta deal was found by Cheapflights users on 1/5. 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.
Sat 8/225:40 amBOS - FCA
1 stop10h 05mDelta
Sat 9/511:45 amFCA - BOS
1 stop8h 35mDelta
Deal found 1/5$303
This Delta deal was found by Cheapflights users on 1/5. 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 1/204:25 pmBOS - FCA
1 stop8h 27mDelta
Fri 1/235:24 amFCA - BOS
1 stop9h 06mDelta
Deal found 1/5$329
This Delta deal was found by Cheapflights users on 1/6. 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.
Sat 7/251:00 pmBOS - FCA
2 stops12h 46mDelta
Sat 8/111:45 amFCA - BOS
1 stop8h 35mDelta
Deal found 1/6$343
This Alaska Airlines deal was found by Cheapflights users on 1/5. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/164:25 pmBOS - FCA
1 stop9h 34mAlaska Airlines
Sat 9/2612:51 pmFCA - BOS
1 stop9h 14mAlaska Airlines
Deal found 1/5$347
This Delta deal was found by Cheapflights users on 1/5. 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.
Mon 1/269:05 amBOS - FCA
2 stops15h 47mDelta
Mon 2/26:05 pmFCA - BOS
2 stops13h 57mDelta
Deal found 1/5$349
This Delta deal was found by Cheapflights users on 1/5. 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.
Mon 6/87:10 amBOS - FCA
1 stop8h 35mDelta
Sat 6/1311:45 amFCA - BOS
1 stop8h 35mDelta
Deal found 1/5$378

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 January 6, 2026.
Use the filters below to find and compare flights from Boston to Kalispell that are best for you.

Fly from

Boston

Fly to

Kalispell

Route

Depart

Return

Price

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Tue 1/20

4:25 pm-10:52 pm

1 stop8h 27m

Kalispell Glacier Park

Fri 1/23

5:24 am-4:30 pm

1 stop9h 06m

$329

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Thu 3/5

6:24 pm-12:12 pm

1 stop19h 48m

Kalispell Glacier Park

Mon 3/9

7:53 pm-6:54 am

1 stop9h 01m

$347

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Wed 2/25

9:02 am-7:13 pm

1 stop12h 11m

Kalispell Glacier Park

Tue 3/3

7:53 pm-6:54 am

1 stop9h 01m

$347

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Thu 3/12

4:36 pm-1:13 pm

1 stop22h 37m

Kalispell Glacier Park

Sun 3/15

7:53 pm-6:54 am

1 stop9h 01m

$397

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Wed 1/21

12:55 pm-10:52 pm

2 stops11h 57m

Kalispell Glacier Park

Wed 1/28

5:24 am-7:30 pm

2 stops12h 06m

$398

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Sat 1/24

9:30 am-11:20 pm

2 stops15h 50m

Kalispell Glacier Park

Wed 1/28

2:42 pm-11:46 pm

1 stop7h 04m

$402

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Wed 1/21

5:20 pm-1:14 pm

1 stop21h 54m

Kalispell Glacier Park

Wed 1/28

7:46 pm-4:20 pm

1 stop18h 34m

$409

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Wed 2/4

9:45 am-9:59 pm

2 stops14h 14m

Kalispell Glacier Park

Wed 2/11

2:42 pm-11:46 pm

1 stop7h 04m

$428

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Tue 1/27

4:25 pm-10:52 pm

1 stop8h 27m

$149

BostonKalispell

BOS - FCA

BOSFCA

Boston Logan Intl

Wed 3/25

8:22 am-5:15 pm

2 stops10h 53m

$166

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/4

Showing 1-10 of 16 results
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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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust 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 Mytrip to be most consistent on Cheapflights vs. Mytrip Users can find the same prices on Boston-Kalispell flight deals on Cheapflights vs. Mytrip >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 Mytrip the most. Mytrip 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?

Use this chart to determine the optimal time to book a round-trip flight from Boston to Kalispell. Price data was last updated on January 2, 2026.

To ensure you get the cheapest price possible for a flight from Boston to Kalispell, you should look to book at least 90 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, July is the cheapest month in which you can book a flight from Boston to Kalispell (average of $238). Flying from Boston to Kalispell in December is currently the most expensive (average of $396). 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.

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 January 6, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta, and Hawaiian 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
8.0
Very good
11,648 reviews

Food

7.1

Entertainment

7.0

Comfort

7.8

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Alaska Airlines
8.0
Very good
11,648 reviews
Alaska Airlines
8.0
Very good
11,648 reviews

Food

7.1

Entertainment

7.0

Comfort

7.8

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Delta
7.9
Good
8,018 reviews
Alaska Airlines
8.0
Very good
11,648 reviews

Food

7.1

Entertainment

7.0

Comfort

7.8

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Hawaiian Airlines
7.8
Good
2,824 reviews
Alaska Airlines
8.0
Very good
11,648 reviews

Food

7.1

Entertainment

7.0

Comfort

7.8

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
United Airlines
7.4
Good
9,132 reviews
Alaska Airlines
8.0
Very good
11,648 reviews

Food

7.1

Entertainment

7.0

Comfort

7.8

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
American Airlines
7.2
Good
11,084 reviews
Alaska Airlines
8.0
Very good
11,648 reviews

Food

7.1

Entertainment

7.0

Comfort

7.8

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

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 8h 27m. Delta provides one of the quickest options available for as low as $329. 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 Hawaiian Airlines. Our recent data shows that you can find tickets from as low as $260 on this airline. Additional options worth looking into are Delta and American Airlines, starting at $296 and $326 round-trip. Hawaiian Airlines is 55% 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 $158 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, July is the cheapest month in which you can book a flight from Boston to Kalispell (average of $238). Flying from Boston to Kalispell in December is currently the most expensive (average of $396). 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 5 airlines flying from Boston to Kalispell

Discover the top 5 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 January 6, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$312Average$546FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$329Average$554FlexibilityNo cancel feeOn-time71%
Hawaiian AirlinesCheapest$332Average$558FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$360Average$655FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$370Average$611FlexibilityNo cancel feeOn-time75%

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