$195+ 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
Jul 31 — Aug 71
Round-trip
1 adult, Economy
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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 July 1, 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 July 1, 2026.
This United Airlines deal was found by Cheapflights users on 7/1. 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 8/247:05 am
BOS
- FCA
1 stop10h 12m
United Airlines
Tue 9/13:58 pm
FCA
- BOS
1 stop7h 13m
United Airlines
Deal found 7/1![United Airlines logo]()
$389
This United Airlines deal was found by Cheapflights users on 6/28. 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.
Tue 9/112:41 pm
BOS
- FCA
2 stops10h 40m
United Airlines
Sat 9/53:58 pm
FCA
- BOS
1 stop7h 12m
United Airlines
Deal found 6/28![United Airlines logo]()
$394
This Delta deal was found by Cheapflights users on 6/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/112:00 pm
BOS
- FCA
2 stops13h 56m
Delta
Sun 9/66:20 am
FCA
- BOS
1 stop8h 45m
Delta
Deal found 6/28![Delta logo]()
$402
This United Airlines deal was found by Cheapflights users on 6/30. 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 8/298:05 am
BOS
- FCA
2 stops9h 49m
United Airlines
Sat 9/123:58 pm
FCA
- BOS
1 stop6h 56m
United Airlines
Deal found 6/30![United Airlines logo]()
$414
This American Airlines deal was found by Cheapflights users on 6/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:10 am
BOS
- FCA
1 stop11h 00m
American Airlines
Fri 8/284:50 pm
FCA
- BOS
1 stop14h 47m
American Airlines
Deal found 6/28![American Airlines logo]()
$418
This American Airlines deal was found by Cheapflights users on 6/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/228:27 am
BOS
- FCA
1 stop9h 47m
American Airlines
Fri 8/284:50 pm
FCA
- BOS
1 stop15h 42m
American Airlines
Deal found 6/28![American Airlines logo]()
$419
This Delta deal was found by Cheapflights users on 6/30. 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 9/1611:20 am
BOS
- FCA
1 stop7h 58m
Delta
Thu 9/176:00 pm
FCA
- BOS
1 stop10h 30m
Delta
Deal found 6/30![Delta logo]()
$424
This American Airlines deal was found by Cheapflights users on 6/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1210:28 am
BOS
- FCA
1 stop7h 42m
American Airlines
Wed 8/194:50 pm
FCA
- BOS
1 stop14h 47m
American Airlines
Deal found 6/28![American Airlines logo]()
$426
This Delta deal was found by Cheapflights users on 7/1. 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 8/227:25 am
BOS
- FCA
2 stops14h 50m
Delta
Wed 9/23:14 pm
FCA
- BOS
1 stop6h 44m
Delta
Deal found 7/1![Delta logo]()
$432
This Delta deal was found by Cheapflights users on 6/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/316:00 am
BOS
- FCA
2 stops19h 56m
Delta
Sat 9/53:15 pm
FCA
- BOS
1 stop6h 43m
Delta
Deal found 6/28![Delta logo]()
$436
This Delta deal was found by Cheapflights users on 7/1. 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 8/256:18 pm
BOS
- FCA
1 stop7h 38m
Delta
Thu 9/36:09 pm
FCA
- BOS
1 stop10h 21m
Delta
Deal found 7/1![Delta logo]()
$439
This American Airlines deal was found by Cheapflights users on 7/1. 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 9/187:45 am
BOS
- FCA
1 stop8h 48m
American Airlines
Fri 9/251:34 pm
FCA
- BOS
1 stop18h 05m
American Airlines
Deal found 7/1![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 July 1, 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 July 1, 2026.
This United Airlines deal was found by Cheapflights users on 6/29. 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.
Mon 8/2412:41 pm
BOS
- FCA
2 stops10h 40m
United Airlines
Wed 9/23:58 pm
FCA
- BOS
1 stop7h 13m
United Airlines
Deal found 6/29![United Airlines logo]()
$494
This Delta deal was found by Cheapflights users on 6/27. 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.
Sun 9/67:10 am
BOS
- FCA
1 stop8h 57m
Delta
Fri 9/116:00 pm
FCA
- BOS
1 stop10h 30m
Delta
Deal found 6/27![Delta logo]()
$504
This Alaska Airlines deal was found by Cheapflights users on 6/30. 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 9/99:33 am
BOS
- FCA
2 stops15h 23m
Alaska Airlines
Tue 9/158:21 pm
FCA
- BOS
1 stop9h 18m
Alaska Airlines
Deal found 6/30![Alaska Airlines logo]()
$621
This Delta deal was found by Cheapflights users on 6/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/46:18 pm
BOS
- FCA
1 stop7h 38m
Delta
Sun 9/66:20 am
FCA
- BOS
1 stop8h 45m
Delta
Deal found 6/28![Delta logo]()
$534
This Delta deal was found by Cheapflights users on 6/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/216:18 pm
BOS
- FCA
1 stop7h 38m
Delta
Thu 8/276:20 am
FCA
- BOS
1 stop8h 45m
Delta
Deal found 6/29![Delta logo]()
$554
This United Airlines deal was found by Cheapflights users on 6/28. 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.
Wed 9/99:33 am
BOS
- FCA
2 stops13h 48m
United Airlines
Tue 9/156:20 am
FCA
- BOS
1 stop13h 39m
United Airlines
Deal found 6/28![United Airlines logo]()
$629
This United Airlines deal was found by Cheapflights users on 6/29. 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 8/215:45 am
BOS
- FCA
2 stops11h 32m
United Airlines
Thu 8/273:58 pm
FCA
- BOS
1 stop7h 13m
United Airlines
Deal found 6/29![United Airlines logo]()
$630
This Delta deal was found by Cheapflights users on 6/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/307:10 am
BOS
- FCA
1 stop8h 57m
Delta
Sun 9/66:20 am
FCA
- BOS
2 stops12h 14m
Delta
Deal found 6/28![Delta logo]()
$587
This Alaska Airlines deal was found by Cheapflights users on 7/1. 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 9/186:17 pm
BOS
- FCA
2 stops25h 11m
Alaska Airlines
Fri 9/256:15 am
FCA
- BOS
2 stops21h 32m
Alaska Airlines
Deal found 7/1![Alaska Airlines logo]()
$733
This Alaska Airlines deal was found by Cheapflights users on 6/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2010:03 am
BOS
- FCA
1 stop14h 53m
Alaska Airlines
Fri 8/281:08 pm
FCA
- BOS
1 stop15h 01m
Alaska Airlines
Deal found 6/29![Alaska Airlines logo]()
$739
This Delta deal was found by Cheapflights users on 6/27. 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.
Sat 8/158:45 am
BOS
- FCA
2 stops13h 30m
Delta
Sun 8/236:20 am
FCA
- BOS
1 stop15h 38m
Delta
Deal found 6/27![Delta logo]()
$742
Last-minute flights from Boston to KalispellDiscover last-minute flight deals from Boston to Kalispell. Data last updated July 1, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Kalispell. Data last updated July 1, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 6/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1210:28 am
BOS
- FCA
1 stop7h 42m
American Airlines
Wed 8/194:50 pm
FCA
- BOS
1 stop14h 47m
American Airlines
Deal found 6/28![American Airlines logo]()
$426
This American Airlines deal was found by Cheapflights users on 6/30. 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 8/177:10 am
BOS
- FCA
1 stop11h 00m
American Airlines
Tue 8/254:50 pm
FCA
- BOS
1 stop14h 47m
American Airlines
Deal found 6/30![American Airlines logo]()
$453
This American Airlines deal was found by Cheapflights users on 7/1. 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 8/187:10 am
BOS
- FCA
1 stop11h 00m
American Airlines
Fri 8/284:50 pm
FCA
- BOS
1 stop14h 47m
American Airlines
Deal found 7/1![American Airlines logo]()
$418
This American Airlines deal was found by Cheapflights users on 6/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/228:27 am
BOS
- FCA
1 stop9h 47m
American Airlines
Fri 8/284:50 pm
FCA
- BOS
1 stop15h 42m
American Airlines
Deal found 6/28![American Airlines logo]()
$419
This Delta deal was found by Cheapflights users on 7/1. 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 8/227:25 am
BOS
- FCA
2 stops14h 50m
Delta
Wed 9/23:14 pm
FCA
- BOS
1 stop6h 44m
Delta
Deal found 7/1![Delta logo]()
$432
This United Airlines deal was found by Cheapflights users on 7/1. 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 8/247:05 am
BOS
- FCA
1 stop10h 12m
United Airlines
Tue 9/13:58 pm
FCA
- BOS
1 stop7h 13m
United Airlines
Deal found 7/1![United Airlines logo]()
$389
This American Airlines deal was found by Cheapflights users on 6/30. 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 8/245:51 am
BOS
- FCA
1 stop10h 43m
American Airlines
Fri 8/284:50 pm
FCA
- BOS
1 stop15h 42m
American Airlines
Deal found 6/30![American Airlines logo]()
$457
This Delta deal was found by Cheapflights users on 7/1. 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 8/256:18 pm
BOS
- FCA
1 stop7h 38m
Delta
Thu 9/36:09 pm
FCA
- BOS
1 stop10h 21m
Delta
Deal found 7/1![Delta logo]()
$439
This United Airlines deal was found by Cheapflights users on 7/1. 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 8/298:05 am
BOS
- FCA
2 stops9h 49m
United Airlines
Sat 9/123:58 pm
FCA
- BOS
1 stop6h 56m
United Airlines
Deal found 7/1![United Airlines logo]()
$414
This Delta deal was found by Cheapflights users on 6/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/318:00 am
BOS
- FCA
2 stops17h 56m
Delta
Sun 9/66:20 am
FCA
- BOS
1 stop8h 45m
Delta
Deal found 6/28![Delta logo]()
$436
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 July 1, 2026.
Search for one-way flight options from Boston to Kalispell. Find affordable one-way fares based on user searches. Data last updated July 1, 2026.
This United Airlines deal was found by Cheapflights users on 7/1. 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 9/67:45 am
BOS
- FCA
1 stop9h 36m
United Airlines
Deal found 7/1![United Airlines logo]()
$195
This Kiwi.com deal was found by Cheapflights users on 6/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1011:28 am
BOS
- FCA
2 stops34h 25m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$203
This United Airlines deal was found by Cheapflights users on 7/1. 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 9/812:41 pm
BOS
- FCA
2 stops10h 40m
United Airlines
Deal found 7/1![United Airlines logo]()
$218
This United Airlines deal was found by Cheapflights users on 7/1. 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 8/298:05 am
BOS
- FCA
2 stops9h 49m
United Airlines
Deal found 7/1![United Airlines logo]()
$219
This Kiwi.com deal was found by Cheapflights users on 6/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1311:59 am
BOS
- FCA
2 stops23h 41m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$226
This Delta deal was found by Cheapflights users on 6/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/138:16 am
BOS
- FCA
1 stop8h 16m
Delta
Deal found 6/28![Delta logo]()
$230
This Kiwi.com deal was found by Cheapflights users on 6/30. 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.
Sun 9/2011:28 am
BOS
- FCA
2 stops34h 28m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$235
This American Airlines deal was found by Cheapflights users on 6/29. 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.
Wed 8/197:10 am
BOS
- FCA
1 stop11h 00m
American Airlines
Deal found 6/29![American Airlines logo]()
$250
This United Airlines deal was found by Cheapflights users on 6/30. 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
Deal found 6/30![United Airlines logo]()
$255
This American Airlines deal was found by Cheapflights users on 7/1. 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 9/96:00 am
BOS
- FCA
1 stop10h 33m
American Airlines
Deal found 7/1![American Airlines logo]()
$260
This Kiwi.com deal was found by Cheapflights users on 6/30. 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.
Sat 8/1512:56 pm
BOS
- FCA
3 stops46h 44m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$263
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 July 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $389 (United Airlines) |
One-way from | $195 (United Airlines) |
Popular in | December |
Cheapest in | October |
Average price | $853 |
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 July 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
Cheapest round-trip
BostonKalispell
BOS - FCA
BOSFCA
Boston Logan Intl
Mon 8/24
12:41 pm-9:21 pm
2 stops10h 40m
Kalispell Glacier Park
Wed 9/2
3:58 pm-1:11 am
1 stop7h 13m
$494
BostonKalispell
BOS - FCA
BOSFCA
Boston Logan Intl
Sun 9/6
7:10 am-2:07 pm
1 stop8h 57m
Kalispell Glacier Park
Fri 9/11
6:00 pm-6:30 am
1 stop10h 30m
$504
Quickest round-trip
BostonKalispell
BOS - FCA
BOSFCA
Boston Logan Intl
Fri 9/4
6:18 pm-11:56 pm
1 stop7h 38m
Kalispell Glacier Park
Sun 9/6
6:20 am-5:05 pm
1 stop8h 45m
$534
BostonKalispell
BOS - FCA
BOSFCA
Boston Logan Intl
Fri 8/21
6:18 pm-11:56 pm
1 stop7h 38m
Kalispell Glacier Park
Thu 8/27
6:20 am-5:05 pm
1 stop8h 45m
$554
BostonKalispell
BOS - FCA
BOSFCA
Boston Logan Intl
Sun 8/30
7:10 am-2:07 pm
1 stop8h 57m
Kalispell Glacier Park
Sun 9/6
6:20 am-8:34 pm
2 stops12h 14m
$587
BostonKalispell
BOS - FCA
BOSFCA
Boston Logan Intl
Wed 9/9
9:33 am-10:56 pm
2 stops15h 23m
Kalispell Glacier Park
Tue 9/15
8:21 pm-7:39 am
1 stop9h 18m
$621
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
6:20 am-9:59 pm
1 stop13h 39m
$629
BostonKalispell
BOS - FCA
BOSFCA
Boston Logan Intl
Fri 8/21
5:45 am-3:17 pm
2 stops11h 32m
Kalispell Glacier Park
Thu 8/27
3:58 pm-1:11 am
1 stop7h 13m
$630
BostonKalispell
BOS - FCA
BOSFCA
Boston Logan Intl
Fri 9/18
6:17 pm-5:28 pm
2 stops25h 11m
Kalispell Glacier Park
Fri 9/25
6:15 am-5:47 am
2 stops21h 32m
$733
BostonKalispell
BOS - FCA
BOSFCA
Boston Logan Intl
Thu 8/20
10:03 am-10:56 pm
1 stop14h 53m
Kalispell Glacier Park
Fri 8/28
1:08 pm-6:09 am
1 stop15h 01m
$739
Showing 1-10 of 22 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 July.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | 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 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?
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 July 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.
Comfort
7.8
Boarding
8.1
Crew
8.5
Overall
7.9
Food
7.1
Entertainment
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Comfort
7.8
Boarding
8.1
Crew
8.5
Overall
7.9
Food
7.1
Entertainment
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Comfort
7.8
Boarding
8.1
Crew
8.5
Overall
7.9
Food
7.1
Entertainment
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Comfort
7.8
Boarding
8.1
Crew
8.5
Overall
7.9
Food
7.1
Entertainment
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Comfort
7.8
Boarding
8.1
Crew
8.5
Overall
7.9
Food
7.1
Entertainment
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
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
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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 July 1, 2026.
Boston and Kalispell flights
Browse other Boston and Kalispell flight options. Last updated on July 1, 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 July 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$316 | Average$624 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$322 | Average$559 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$346 | Average$558 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$366 | Average$571 | FlexibilityNo cancel fee | On-time71% |