HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Boston

$200+ 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 8/28. Fares are subject to change and may not be available on all flights or dates of travel.
FCA — BOS
Aug 22 — Aug 291
Sat 8/22
Sat 8/29
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Kalispell to Boston with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 July 23, 2026.

This Travelocity deal was found by Cheapflights users on 7/18. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/302:03 pm
FCA
-
BOS
1 stop7h 51m
Alaska Airlines
Mon 11/29:00 am
BOS
-
FCA
1 stop30h 25m
Alaska Airlines
Deal found 7/18$399
This Delta deal was found by Cheapflights users on 7/20. 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 10/223:36 pm
FCA
-
BOS
1 stop6h 44m
Delta
Mon 10/266:05 am
BOS
-
FCA
1 stop7h 40m
Delta
Deal found 7/20$404
This Delta deal was found by Cheapflights users on 7/22. 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 9/226:00 pm
FCA
-
BOS
1 stop10h 30m
Delta
Sat 10/35:55 am
BOS
-
FCA
1 stop9h 30m
Delta
Deal found 7/22$414
This American Airlines deal was found by Cheapflights users on 7/19. 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.
Wed 9/24:50 pm
FCA
-
BOS
1 stop14h 47m
American Airlines
Wed 9/167:45 am
BOS
-
FCA
1 stop8h 48m
American Airlines
Deal found 7/19$446
This Delta deal was found by Cheapflights users on 7/22. 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 11/196:10 pm
FCA
-
BOS
1 stop10h 01m
Delta
Thu 11/2610:35 am
BOS
-
FCA
1 stop9h 10m
Delta
Deal found 7/22$449
This United Airlines deal was found by Cheapflights users on 7/18. 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 10/306:15 am
FCA
-
BOS
2 stops13h 40m
United Airlines
Mon 11/23:25 pm
BOS
-
FCA
1 stop8h 17m
United Airlines
Deal found 7/18$459
This American Airlines deal was found by Cheapflights users on 7/22. 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.
Thu 10/221:58 pm
FCA
-
BOS
2 stops15h 50m
American Airlines
Mon 10/267:00 am
BOS
-
FCA
1 stop8h 27m
American Airlines
Deal found 7/22$472
This Alaska Airlines deal was found by Cheapflights users on 7/21. 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 11/247:37 pm
FCA
-
BOS
1 stop10h 25m
Alaska Airlines
Thu 11/269:20 am
BOS
-
FCA
1 stop11h 37m
Alaska Airlines
Deal found 7/21$474
This American Airlines deal was found by Cheapflights users on 7/20. 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.
Thu 8/64:50 pm
FCA
-
BOS
1 stop14h 47m
American Airlines
Mon 8/246:14 am
BOS
-
FCA
1 stop8h 28m
American Airlines
Deal found 7/20$476

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 July 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$404
(Delta)

One-way from

$200
(Kiwi.com)

Popular in

February

Cheapest in

December

Average price

$627
Provider with most accurate pricing for Kalispell Glacier Park-Boston Logan Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Kalispell Glacier Park-Boston Logan Intl flights.
Search Deals
From Kalispell Glacier Park to Boston Logan Intl
Search Deals
One-way flight from Kalispell Glacier Park to Boston Logan Intl
Search Deals
Highest demand for flights based on searches. 31% potential increase in price ($261 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

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 July 23, 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
Quickest round-trip

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Thu 10/22

3:36 pm-12:20 am

1 stop6h 44m

Boston Logan Intl

Mon 10/26

6:05 am-11:45 am

1 stop7h 40m

$404

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Tue 9/22

6:00 pm-6:30 am

1 stop10h 30m

Boston Logan Intl

Sat 10/3

5:55 am-1:25 pm

1 stop9h 30m

$444

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Sat 12/5

6:31 am-6:49 pm

2 stops10h 18m

Boston Logan Intl

Tue 12/8

3:19 pm-9:30 pm

1 stop8h 11m

$484

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Wed 9/2

3:58 pm-1:11 am

1 stop7h 13m

Boston Logan Intl

Wed 9/16

9:00 am-9:21 pm

2 stops14h 21m

$484

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Tue 9/22

8:21 pm-7:39 am

1 stop9h 18m

Boston Logan Intl

Sat 10/3

7:50 am-10:59 pm

2 stops17h 09m

$516
Cheapest one-way

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Wed 9/30

4:17 pm-6:11 am

1 stop11h 54m

$200
Quickest one-way

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Sat 8/29

3:58 pm-1:11 am

1 stop7h 13m

$200

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Thu 8/27

10:45 am-11:59 pm

2 stops11h 14m

$235

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Sat 9/12

4:17 pm-6:02 am

1 stop11h 45m

$235

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Fri 8/28

3:58 pm-1:11 am

1 stop7h 13m

$250

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/22

Showing 1-10 of 12 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 July.
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

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

Airfare is below average for this route at the moment.

Kalispell to Boston flights typically cost between $580 and $764 in October.
The cheapest round-trip price found within the last 5 days was $404 on Delta (Oct 22-Oct 26).

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 July 23, 2026.
Peruse reviews from past customers who have flown with Delta and United 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.
Delta
7.8
Good
8,479 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.8

Overall

7.8

Boarding

8.1

Food

7.2

Reviews

1 / 20
6.0
Good

Colin,Sep 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
Delta
7.8
Good
8,479 reviews
Delta
7.8
Good
8,479 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.8

Overall

7.8

Boarding

8.1

Food

7.2

Reviews

1 / 20
6.0
Good

Colin,Sep 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
United Airlines
7.4
Good
10,024 reviews
Delta
7.8
Good
8,479 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.8

Overall

7.8

Boarding

8.1

Food

7.2

Reviews

1 / 20
6.0
Good

Colin,Sep 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

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 6h 44m. 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 $296 on this airline. An additional option worth looking into is United Airlines, starting at $381. Delta is 47% 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 $220 on Delta and United 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.

See more FAQs

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Waltham
Cambridge
Concord
Randolph
Brockton
Seekonk
Hampton Beach
Cranston
Dedham
Warwick
Peabody
Auburn
York Beach
Chelsea
Londonderry
Swansea
Fitchburg
North Falmouth
Braintree
Sandwich

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 2 airlines flying from Kalispell to Boston

Discover the top 2 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 July 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$296Average$517FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$381Average$604FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2026 Cheapflights