$179+ 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 6/7. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — FCA
Jun 19 — Jun 261
Round-trip
1 adult, Economy
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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
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Cheapest flights from Boston to KalispellExplore 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 May 20, 2026.
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 May 20, 2026.
This Delta deal was found by Cheapflights users on 5/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/115:50 pm
BOS
- FCA
1 stop7h 48m
Delta
Wed 6/176:55 am
FCA
- BOS
1 stop7h 50m
Delta
Deal found 5/19![Delta logo]()
$357
This American Airlines deal was found by Cheapflights users on 5/15. 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.
Sat 5/305:05 am
BOS
- FCA
1 stop9h 31m
American Airlines
Fri 6/51:35 pm
FCA
- BOS
1 stop7h 14m
American Airlines
Deal found 5/15![American Airlines logo]()
$373
This Delta deal was found by Cheapflights users on 5/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/38:15 am
BOS
- FCA
1 stop7h 30m
Delta
Fri 10/91:29 pm
FCA
- BOS
1 stop8h 24m
Delta
Deal found 5/18![Delta logo]()
$388
This American Airlines deal was found by Cheapflights users on 5/15. 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.
Sat 5/3010:35 am
BOS
- FCA
1 stop7h 28m
American Airlines
Wed 6/31:25 pm
FCA
- BOS
1 stop7h 29m
American Airlines
Deal found 5/15![American Airlines logo]()
$389
This United Airlines deal was found by Cheapflights users on 5/15. 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.
Sat 5/305:45 am
BOS
- FCA
2 stops12h 26m
United Airlines
Wed 6/312:35 pm
FCA
- BOS
1 stop7h 21m
United Airlines
Deal found 5/15![United Airlines logo]()
$394
This United Airlines deal was found by Cheapflights users on 5/17. 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 9/97:45 am
BOS
- FCA
1 stop9h 36m
United Airlines
Tue 9/154:18 pm
FCA
- BOS
1 stop6h 56m
United Airlines
Deal found 5/17![United Airlines logo]()
$397
This Delta deal was found by Cheapflights users on 5/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/46:18 pm
BOS
- FCA
1 stop7h 33m
Delta
Mon 8/106:11 pm
FCA
- BOS
1 stop10h 19m
Delta
Deal found 5/18![Delta logo]()
$408
This Delta deal was found by Cheapflights users on 5/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/45:51 am
BOS
- FCA
1 stop9h 42m
Delta
Tue 6/96:55 am
FCA
- BOS
1 stop7h 50m
Delta
Deal found 5/19![Delta logo]()
$424
This Delta deal was found by Cheapflights users on 5/17. 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 5/265:51 am
BOS
- FCA
1 stop9h 42m
Delta
Tue 6/96:55 am
FCA
- BOS
1 stop7h 50m
Delta
Deal found 5/17![Delta logo]()
$438
This American Airlines deal was found by Cheapflights users on 5/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/45:01 am
BOS
- FCA
1 stop9h 44m
American Airlines
Tue 6/94:48 pm
FCA
- BOS
1 stop14h 42m
American Airlines
Deal found 5/18![American Airlines logo]()
$442
Best flights from Boston to KalispellDiscover carefully curated flight deals from Boston to Kalispell that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 20, 2026.
Discover carefully curated flight deals from Boston to Kalispell that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 20, 2026.
This United Airlines deal was found by Cheapflights users on 5/16. 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.
Tue 8/185:45 am
BOS
- FCA
2 stops15h 09m
United Airlines
Tue 8/254:17 pm
FCA
- BOS
1 stop6h 57m
United Airlines
Deal found 5/16![United Airlines logo]()
$472
This Delta deal was found by Cheapflights users on 5/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/185:40 am
BOS
- FCA
1 stop10h 05m
Delta
Fri 9/253:00 pm
FCA
- BOS
1 stop6h 52m
Delta
Deal found 5/19![Delta logo]()
$498
This Alaska Airlines deal was found by Cheapflights users on 5/17. 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 9/185:42 pm
BOS
- FCA
1 stop21h 46m
Alaska Airlines
Fri 9/256:15 am
FCA
- BOS
1 stop10h 41m
Alaska Airlines
Deal found 5/17![Alaska Airlines logo]()
$509
This United Airlines deal was found by Cheapflights users on 5/15. 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 9/99:33 am
BOS
- FCA
2 stops13h 48m
United Airlines
Tue 9/154:18 pm
FCA
- BOS
1 stop6h 56m
United Airlines
Deal found 5/15![United Airlines logo]()
$518
This Delta deal was found by Cheapflights users on 5/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/146:00 pm
BOS
- FCA
1 stop7h 46m
Delta
Sat 9/1911:59 am
FCA
- BOS
1 stop9h 58m
Delta
Deal found 5/19![Delta logo]()
$539
This United Airlines deal was found by Cheapflights users on 5/17. 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 8/216:00 am
BOS
- FCA
1 stop7h 27m
United Airlines
Thu 8/2712:33 pm
FCA
- BOS
1 stop10h 01m
United Airlines
Deal found 5/17![United Airlines logo]()
$526
This Alaska Airlines deal was found by Cheapflights users on 5/18. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/144:33 pm
BOS
- FCA
1 stop21h 57m
Alaska Airlines
Sat 8/226:08 pm
FCA
- BOS
1 stop18h 20m
Alaska Airlines
Deal found 5/18![Alaska Airlines logo]()
$631
This United Airlines deal was found by Cheapflights users on 5/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/156:00 am
BOS
- FCA
1 stop7h 29m
United Airlines
Fri 6/1910:42 am
FCA
- BOS
2 stops12h 32m
United Airlines
Deal found 5/19![United Airlines logo]()
$664
This United Airlines deal was found by Cheapflights users on 5/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/148:31 pm
BOS
- FCA
2 stops15h 33m
United Airlines
Sat 9/195:04 pm
FCA
- BOS
2 stops14h 44m
United Airlines
Deal found 5/19![United Airlines logo]()
$679
Last-minute flights from Boston to KalispellDiscover last-minute flight deals from Boston to Kalispell. Data last updated May 20, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Kalispell. Data last updated May 20, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 5/16. 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.
Sat 5/236:00 am
BOS
- FCA
1 stop9h 38m
American Airlines
Sat 5/301:26 pm
FCA
- BOS
1 stop8h 49m
American Airlines
Deal found 5/16![American Airlines logo]()
$454
This Delta deal was found by Cheapflights users on 5/17. 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 5/265:51 am
BOS
- FCA
1 stop9h 42m
Delta
Tue 6/96:55 am
FCA
- BOS
1 stop7h 50m
Delta
Deal found 5/17![Delta logo]()
$438
This United Airlines deal was found by Cheapflights users on 5/17. 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.
Tue 5/267:30 am
BOS
- FCA
2 stops10h 41m
United Airlines
Tue 6/912:35 pm
FCA
- BOS
1 stop8h 46m
United Airlines
Deal found 5/17![United Airlines logo]()
$443
This American Airlines deal was found by Cheapflights users on 5/15. 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.
Sat 5/305:05 am
BOS
- FCA
1 stop9h 31m
American Airlines
Fri 6/51:35 pm
FCA
- BOS
1 stop7h 14m
American Airlines
Deal found 5/15![American Airlines logo]()
$373
This American Airlines deal was found by Cheapflights users on 5/15. 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.
Sat 5/3010:35 am
BOS
- FCA
1 stop7h 28m
American Airlines
Wed 6/31:25 pm
FCA
- BOS
1 stop7h 29m
American Airlines
Deal found 5/15![American Airlines logo]()
$389
This United Airlines deal was found by Cheapflights users on 5/15. 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.
Sat 5/305:45 am
BOS
- FCA
2 stops12h 26m
United Airlines
Wed 6/312:35 pm
FCA
- BOS
1 stop7h 21m
United Airlines
Deal found 5/15![United Airlines logo]()
$394
This Delta deal was found by Cheapflights users on 5/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/45:51 am
BOS
- FCA
1 stop9h 42m
Delta
Tue 6/96:55 am
FCA
- BOS
1 stop7h 50m
Delta
Deal found 5/19![Delta logo]()
$424
This American Airlines deal was found by Cheapflights users on 5/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/45:01 am
BOS
- FCA
1 stop9h 44m
American Airlines
Tue 6/94:48 pm
FCA
- BOS
1 stop14h 42m
American Airlines
Deal found 5/18![American Airlines logo]()
$442
This Delta deal was found by Cheapflights users on 5/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/115:50 pm
BOS
- FCA
1 stop7h 48m
Delta
Wed 6/176:55 am
FCA
- BOS
1 stop7h 50m
Delta
Deal found 5/19![Delta logo]()
$357
This Delta deal was found by Cheapflights users on 5/17. 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 6/166:45 pm
BOS
- FCA
1 stop6h 53m
Delta
Tue 6/236:55 am
FCA
- BOS
1 stop7h 50m
Delta
Deal found 5/17![Delta logo]()
$448
One-way flights from Boston to KalispellSearch for one-way flight options from Boston to Kalispell. Find affordable one-way fares based on user searches. Data last updated May 20, 2026.
Search for one-way flight options from Boston to Kalispell. Find affordable one-way fares based on user searches. Data last updated May 20, 2026.
This United Airlines deal was found by Cheapflights users on 5/17. 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.
Sun 6/76:00 am
BOS
- FCA
1 stop7h 29m
United Airlines
Deal found 5/17![United Airlines logo]()
$179
This American Airlines deal was found by Cheapflights users on 5/19. 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.
Tue 8/116:10 am
BOS
- FCA
1 stop8h 23m
American Airlines
Deal found 5/19![American Airlines logo]()
$195
This United Airlines deal was found by Cheapflights users on 5/17. 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 8/196:00 am
BOS
- FCA
1 stop7h 27m
United Airlines
Deal found 5/17![United Airlines logo]()
$209
This KAYAK deal was found by Cheapflights users on 5/16. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:00 pm
BOS
- FCA
1 stop7h 46m
Delta
Deal found 5/16![Delta logo]()
$213
This United Airlines deal was found by Cheapflights users on 5/15. 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.
Tue 9/86:00 am
BOS
- FCA
1 stop7h 29m
United Airlines
Deal found 5/15![United Airlines logo]()
$227
This Delta deal was found by Cheapflights users on 5/15. 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 9/96:00 pm
BOS
- FCA
1 stop7h 46m
Delta
Deal found 5/15![Delta logo]()
$230
This United Airlines deal was found by Cheapflights users on 5/17. 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 6/86:00 am
BOS
- FCA
1 stop7h 29m
United Airlines
Deal found 5/17![United Airlines logo]()
$234
This American Airlines deal was found by Cheapflights users on 5/17. 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.
Mon 6/86:30 am
BOS
- FCA
2 stops11h 32m
American Airlines
Deal found 5/17![American Airlines logo]()
$239
This Delta deal was found by Cheapflights users on 5/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/295:51 am
BOS
- FCA
1 stop9h 42m
Delta
Deal found 5/19![Delta logo]()
$260
This Kiwi.com deal was found by Cheapflights users on 5/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2812:07 pm
BOS
- FCA
2 stops23h 39m
Allegiant Air
Deal found 5/19![Allegiant Air logo]()
$262
This American Airlines deal was found by Cheapflights users on 5/20. 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.
Fri 5/296:00 am
BOS
- FCA
2 stops11h 00m
American Airlines
Deal found 5/20![American Airlines logo]()
$265
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 May 20, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $357 (Delta) |
One-way from | $179 (Delta) |
Popular in | December |
Cheapest in | November |
Average price | $454 |
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 May 20, 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
Cheapest round-trip
BostonKalispell
BOS - FCA
BOSFCA
Boston Logan Intl
Tue 8/18
5:45 am-6:54 pm
2 stops15h 09m
Kalispell Glacier Park
Tue 8/25
4:17 pm-1:14 am
1 stop6h 57m
$472
Quickest round-trip
BostonKalispell
BOS - FCA
BOSFCA
Boston Logan Intl
Fri 9/18
5:40 am-1:45 pm
1 stop10h 05m
Kalispell Glacier Park
Fri 9/25
3:00 pm-11:52 pm
1 stop6h 52m
$498
BostonKalispell
BOS - FCA
BOSFCA
Boston Logan Intl
Fri 9/18
5:42 pm-1:28 pm
1 stop21h 46m
Kalispell Glacier Park
Fri 9/25
6:15 am-6:56 pm
1 stop10h 41m
$509
BostonKalispell
BOS - FCA
BOSFCA
Boston Logan Intl
Wed 9/9
9:33 am-9:21 pm
2 stops13h 48m
Kalispell Glacier Park
Tue 9/15
4:18 pm-1:14 am
1 stop6h 56m
$518
BostonKalispell
BOS - FCA
BOSFCA
Boston Logan Intl
Fri 8/21
6:00 am-11:27 am
1 stop7h 27m
Kalispell Glacier Park
Thu 8/27
12:33 pm-12:34 am
1 stop10h 01m
$526
BostonKalispell
BOS - FCA
BOSFCA
Boston Logan Intl
Mon 9/14
6:00 pm-11:46 pm
1 stop7h 46m
Kalispell Glacier Park
Sat 9/19
11:59 am-11:57 pm
1 stop9h 58m
$539
BostonKalispell
BOS - FCA
BOSFCA
Boston Logan Intl
Fri 8/14
4:33 pm-12:30 pm
1 stop21h 57m
Kalispell Glacier Park
Sat 8/22
6:08 pm-2:28 pm
1 stop18h 20m
$631
BostonKalispell
BOS - FCA
BOSFCA
Boston Logan Intl
Mon 6/15
6:00 am-11:29 am
1 stop7h 29m
Kalispell Glacier Park
Fri 6/19
10:42 am-1:14 am
2 stops12h 32m
$664
BostonKalispell
BOS - FCA
BOSFCA
Boston Logan Intl
Mon 9/14
8:31 pm-10:04 am
2 stops15h 33m
Kalispell Glacier Park
Sat 9/19
5:04 pm-9:48 am
2 stops14h 44m
$679
Cheapest one-way
Quickest one-way
BostonKalispell
BOS - FCA
BOSFCA
Boston Logan Intl
Sun 6/7
6:00 am-11:29 am
1 stop7h 29m
$179
Showing 1-10 of 16 resultsSorted by cheapest first
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 May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- 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.
BOS-FCA
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 89 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, November is the cheapest month in which you can book a flight from Boston to Kalispell (average of $410). Flying from Boston to Kalispell in December is currently the most expensive (average of $979). 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?
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 May 20, 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.
Food
7.0
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Overall
7.9
Crew
8.5
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Food
7.0
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Overall
7.9
Crew
8.5
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Food
7.0
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Overall
7.9
Crew
8.5
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Food
7.0
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Overall
7.9
Crew
8.5
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Food
7.0
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Overall
7.9
Crew
8.5
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
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.
Traveling to a place near Kalispell?
Book flights to Kalispell if you plan to visit one of these locationsColumbia Falls
East Glacier Park
Browse thousands of different options on Cheapflights for your next trip
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Other flights to Kalispell
Explore flights to Kalispell departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on May 20, 2026.
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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 May 20, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$316 | Average$552 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$333 | Average$517 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$342 | Average$635 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$346 | Average$603 | FlexibilityNo cancel fee | On-time75% |