Boston

$159+ Cheap flights from Kalispell to Boston (FCA - BOS)

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 4/3. Fares are subject to change and may not be available on all flights or dates of travel.
FCA — BOS
Apr 9 — Apr 161
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Cheap flight deals from Kalispell to Boston

Cheapest flights from Kalispell to Boston
Explore the most affordable flight options available from Kalispell to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 10, 2026.

This Delta deal was found by Cheapflights users on 3/9. 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.
Thu 10/223:00 pm
FCA
-
BOS
1 stop6h 53m
Delta
Mon 10/265:40 am
BOS
-
FCA
1 stop10h 09m
Delta
Deal found 3/9$317
This United Airlines deal was found by Cheapflights users on 3/8. 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 5/12:33 pm
FCA
-
BOS
1 stop7h 26m
United Airlines
Tue 5/59:30 am
BOS
-
FCA
2 stops14h 27m
United Airlines
Deal found 3/8$331
This Expedia deal was found by Cheapflights users on 3/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/68:26 pm
FCA
-
BOS
1 stop8h 13m
Alaska Airlines
Thu 4/97:15 am
BOS
-
FCA
1 stop14h 31m
Alaska Airlines
Deal found 3/9$337
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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.
Tue 9/228:00 pm
FCA
-
BOS
1 stop10h 02m
Alaska Airlines
Sat 10/36:32 pm
BOS
-
FCA
1 stop19h 42m
Alaska Airlines
Deal found 3/9$340
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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.
Fri 5/296:15 am
FCA
-
BOS
1 stop9h 56m
Alaska Airlines
Tue 6/24:48 pm
BOS
-
FCA
1 stop9h 10m
Alaska Airlines
Deal found 3/9$360
This American Airlines deal was found by Cheapflights users on 3/8. 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.
Tue 5/261:25 pm
FCA
-
BOS
1 stop19h 04m
American Airlines
Tue 6/97:00 am
BOS
-
FCA
1 stop7h 35m
American Airlines
Deal found 3/8$362
This Expedia deal was found by Cheapflights users on 3/6. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/512:52 pm
FCA
-
BOS
1 stop15h 01m
Alaska Airlines
Thu 4/99:00 am
BOS
-
FCA
1 stop12h 46m
Alaska Airlines
Deal found 3/6$363
This Delta deal was found by Cheapflights users on 3/8. 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 4/46:45 pm
FCA
-
BOS
1 stop9h 25m
Delta
Thu 4/95:50 am
BOS
-
FCA
1 stop9h 38m
Delta
Deal found 3/8$368
This Alaska Airlines deal was found by Cheapflights users on 3/7. 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.
Fri 4/312:52 pm
FCA
-
BOS
1 stop15h 01m
Alaska Airlines
Mon 4/66:10 pm
BOS
-
FCA
1 stop27h 36m
Alaska Airlines
Deal found 3/7$370
This Delta deal was found by Cheapflights users on 3/8. 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 10/215:25 am
FCA
-
BOS
2 stops12h 36m
Delta
Sun 10/255:40 am
BOS
-
FCA
1 stop10h 09m
Delta
Deal found 3/8$373
This Delta deal was found by Cheapflights users on 3/6. 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.
Thu 4/25:56 pm
FCA
-
BOS
1 stop10h 14m
Delta
Wed 4/86:00 am
BOS
-
FCA
2 stops19h 41m
Delta
Deal found 3/6$376

Find flight deals from Kalispell to Boston

Discover tips and strategies to find the most affordable flight options for your journey from Kalispell (FCA) to Boston (BOS). 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 March 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$317
(Delta)

One-way from

$159
(Delta)

Popular in

July

Cheapest in

April
Provider with most accurate pricing for Kalispell Glacier Park-Boston Logan Intl flight deals.
Provider most trusted by Cheapflights users for Kalispell Glacier Park-Boston Logan Intl flights.
From Kalispell Glacier Park to Boston Logan Intl
One-way flight from Kalispell Glacier Park to Boston Logan Intl
Highest demand for flights based on searches. 8% potential increase in price ($48 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($19 potential savings vs. average RT price).

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated March 10, 2026.
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

Cheapest round-trip

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Fri 5/29

6:15 am-6:11 pm

1 stop9h 56m

Boston Logan Intl

Tue 6/2

4:48 pm-11:58 pm

1 stop9h 10m

$360

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Tue 5/26

4:14 pm-6:20 am

1 stop12h 06m

Boston Logan Intl

Tue 6/9

6:40 pm-12:30 pm

1 stop19h 50m

$363

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Sat 4/4

6:45 pm-6:10 am

1 stop9h 25m

Boston Logan Intl

Thu 4/9

5:50 am-1:28 pm

1 stop9h 38m

$368

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Thu 4/2

5:56 pm-6:10 am

1 stop10h 14m

Boston Logan Intl

Wed 4/8

6:00 am-11:41 pm

2 stops19h 41m

$376

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Mon 4/6

5:56 pm-6:10 am

1 stop10h 14m

Boston Logan Intl

Wed 4/8

6:00 am-11:41 pm

2 stops19h 41m

$376

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Sat 4/4

6:45 pm-6:10 am

1 stop9h 25m

Boston Logan Intl

Wed 4/8

6:00 am-11:41 pm

2 stops19h 41m

$376
Quickest round-trip

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Fri 5/29

12:35 pm-11:59 pm

2 stops9h 24m

Boston Logan Intl

Tue 6/2

6:00 am-11:29 am

1 stop7h 29m

$422

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Fri 4/3

8:26 pm-6:39 am

1 stop8h 13m

Boston Logan Intl

Mon 4/6

6:10 pm-12:12 pm

1 stop20h 02m

$441

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Tue 6/2

11:33 am-11:59 pm

1 stop10h 26m

Boston Logan Intl

Tue 6/16

8:28 am-12:30 pm

1 stop30h 02m

$470
Cheapest one-way
Quickest one-way

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Wed 4/22

2:49 pm-11:35 pm

1 stop6h 46m

$159

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/7

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

Compare providers for flights from Kalispell to Boston

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 Kalispell to Boston in March.
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 Kalispell-Boston flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Kalispell-Boston flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Kalispell-Boston flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Kalispell-Boston 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 Kalispell-Boston 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 Kalispell to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from Kalispell 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 Kalispell to Boston

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

Currently, May is the cheapest month in which you can book a flight from Kalispell to Boston (average of $246). Flying from Kalispell to Boston in March is currently the most expensive (average of $461). 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 Boston

Get insights into the airlines that provide service to Boston. 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 Boston. Reviews last updated March 10, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines,Delta, andUnited Airlines from Kalispell to Boston 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.

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.

Related info for your journey

Find useful and relevant information for your journey from Kalispell to Boston. 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 Kalispell to Boston?

    Departing from Kalispell to Boston will take you 9h 25m. The distance from Kalispell to Boston 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 Kalispell to Boston round-trip?

    Our cheapest airline available from Kalispell to Boston is Delta. Our recent data shows that you can find tickets from as low as $286 on this airline. Additional options worth looking into are United Airlines and Alaska Airlines, starting at $388 and $396 round-trip. Delta is 45% cheaper than the average price of flights available within the next 90 days to this destination.

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

    For one-way options, check prices for Alaska Airlines. According to our data, you can fly for as low as $148. Users have also found prices from $158 and $173 on Delta and American Airlines, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Kalispell to Boston 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 Kalispell to Boston?

    Currently, May is the cheapest month in which you can book a flight from Kalispell to Boston (average of $246). Flying from Kalispell to Boston in March is currently the most expensive (average of $461). 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 Boston?

Book flights to Boston if you plan to visit one of these locations
Medford
Cambridge
Concord
Hampton Beach
Watertown
Seekonk
Brockton
Seabrook
Cranston
Chelsea
Smithfield
Lincoln
Warwick
Peabody
Waltham
York Beach
Londonderry
Swansea
Old Orchard Beach
Quincy

Browse thousands of different options on Cheapflights for your next trip

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Top 4 airlines flying from Kalispell to Boston

Discover the top 4 airlines that operate flights from Kalispell to Boston. 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 March 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$286Average$498FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$388Average$582FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$396Average$694FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$405Average$614FlexibilityNo cancel feeOn-time71%

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