$179+ 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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
FCA — BOS
Jul 12 — Jul 191
Round-trip
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
Best
Last-minute
One-way
Cheapest flights from Kalispell to BostonExplore 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 June 12, 2026.
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 June 12, 2026.
This Delta deal was found by Cheapflights users on 6/12. 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 10/221:29 pm
FCA
- BOS
1 stop6h 55m
Delta
Mon 10/265:40 am
BOS
- FCA
1 stop8h 49m
Delta
Deal found 6/12![Delta logo]()
$357
This American Airlines deal was found by Cheapflights users on 6/11. 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 8/254:50 pm
FCA
- BOS
1 stop15h 42m
American Airlines
Tue 9/110:28 am
BOS
- FCA
1 stop7h 42m
American Airlines
Deal found 6/11![American Airlines logo]()
$402
This Alaska Airlines deal was found by Cheapflights users on 6/8. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/228:21 pm
FCA
- BOS
1 stop9h 18m
Alaska Airlines
Sat 10/36:37 pm
BOS
- FCA
1 stop19h 44m
Alaska Airlines
Deal found 6/8![Alaska Airlines logo]()
$403
This American Airlines deal was found by Cheapflights users on 6/11. 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 8/246:45 am
BOS
- FCA
1 stop9h 49m
American Airlines
Deal found 6/11![American Airlines logo]()
$410
This American Airlines deal was found by Cheapflights users on 6/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/14:50 pm
FCA
- BOS
1 stop14h 47m
American Airlines
Tue 9/156:00 am
BOS
- FCA
1 stop10h 33m
American Airlines
Deal found 6/9![American Airlines logo]()
$441
This United Airlines deal was found by Cheapflights users on 6/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/54:17 pm
FCA
- BOS
1 stop6h 57m
United Airlines
Sat 9/127:45 am
BOS
- FCA
1 stop9h 36m
United Airlines
Deal found 6/9![United Airlines logo]()
$444
This United Airlines deal was found by Cheapflights users on 6/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/14:17 pm
FCA
- BOS
1 stop6h 57m
United Airlines
Tue 9/159:00 am
BOS
- FCA
2 stops14h 21m
United Airlines
Deal found 6/9![United Airlines logo]()
$472
This American Airlines deal was found by Cheapflights users on 6/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/221:24 pm
FCA
- BOS
2 stops16h 13m
American Airlines
Mon 10/265:24 am
BOS
- FCA
1 stop9h 04m
American Airlines
Deal found 6/9![American Airlines logo]()
$481
Best flights from Kalispell to BostonDiscover carefully curated flight deals from Kalispell to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 12, 2026.
Discover carefully curated flight deals from Kalispell to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 12, 2026.
This Delta deal was found by Cheapflights users on 6/12. 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 10/221:29 pm
FCA
- BOS
1 stop6h 55m
Delta
Mon 10/265:40 am
BOS
- FCA
1 stop8h 49m
Delta
Deal found 6/12![Delta logo]()
$357
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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 9/228:21 pm
FCA
- BOS
1 stop9h 18m
Alaska Airlines
Sat 10/37:00 am
BOS
- FCA
1 stop14h 05m
Alaska Airlines
Deal found 6/10![Alaska Airlines logo]()
$408
This United Airlines deal was found by Cheapflights users on 6/10. 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 9/14:17 pm
FCA
- BOS
1 stop6h 57m
United Airlines
Tue 9/159:33 am
BOS
- FCA
2 stops13h 48m
United Airlines
Deal found 6/10![United Airlines logo]()
$472
This American Airlines deal was found by Cheapflights users on 6/12. 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 10/221:24 pm
FCA
- BOS
2 stops16h 13m
American Airlines
Mon 10/266:52 am
BOS
- FCA
1 stop7h 36m
American Airlines
Deal found 6/12![American Airlines logo]()
$509
This Delta deal was found by Cheapflights users on 6/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/266:35 am
FCA
- BOS
1 stop8h 50m
Delta
Sun 10/115:40 am
BOS
- FCA
1 stop8h 49m
Delta
Deal found 6/7![Delta logo]()
$357
This United Airlines deal was found by Cheapflights users on 6/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/54:17 pm
FCA
- BOS
1 stop6h 57m
United Airlines
Sat 9/128:00 am
BOS
- FCA
2 stops9h 54m
United Airlines
Deal found 6/9![United Airlines logo]()
$475
This Alaska Airlines deal was found by Cheapflights users on 6/7. 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.
Thu 8/64:34 pm
FCA
- BOS
1 stop13h 06m
Alaska Airlines
Mon 8/104:33 pm
BOS
- FCA
1 stop21h 57m
Alaska Airlines
Deal found 6/7![Alaska Airlines logo]()
$509
This Delta deal was found by Cheapflights users on 6/11. 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 10/121:29 pm
FCA
- BOS
1 stop8h 24m
Delta
Mon 10/195:40 am
BOS
- FCA
1 stop8h 49m
Delta
Deal found 6/11![Delta logo]()
$544
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Thu 8/134:17 pm
FCA
- BOS
1 stop6h 57m
United Airlines
Sun 8/238:05 am
BOS
- FCA
1 stop12h 49m
United Airlines
Deal found 6/10![United Airlines logo]()
$550
Last-minute flights from Kalispell to BostonDiscover last-minute flight deals from Kalispell to Boston. Data last updated June 12, 2026 and is based on user searches.
Discover last-minute flight deals from Kalispell to Boston. Data last updated June 12, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 6/9. 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.
Tue 6/162:10 pm
FCA
- BOS
1 stop13h 30m
Alaska Airlines
Fri 6/197:44 pm
BOS
- FCA
1 stop17h 04m
Alaska Airlines
Deal found 6/9![Alaska Airlines logo]()
$689
This American Airlines deal was found by Cheapflights users on 6/8. 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 6/231:35 pm
FCA
- BOS
1 stop8h 53m
American Airlines
Sat 6/277:46 pm
BOS
- FCA
1 stop18h 59m
American Airlines
Deal found 6/8![American Airlines logo]()
$646
This United Airlines deal was found by Cheapflights users on 6/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/234:11 pm
FCA
- BOS
1 stop12h 10m
United Airlines
Sat 6/273:10 pm
BOS
- FCA
1 stop8h 37m
United Airlines
Deal found 6/9![United Airlines logo]()
$710
This American Airlines deal was found by Cheapflights users on 6/8. 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.
Wed 7/14:48 pm
FCA
- BOS
1 stop14h 46m
American Airlines
Mon 7/65:10 am
BOS
- FCA
1 stop12h 59m
American Airlines
Deal found 6/8![American Airlines logo]()
$647
This Delta deal was found by Cheapflights users on 6/8. 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.
Thu 7/26:55 am
FCA
- BOS
1 stop7h 50m
Delta
Fri 7/105:55 pm
BOS
- FCA
1 stop7h 48m
Delta
Deal found 6/8![Delta logo]()
$707
This Kiwi.com deal was found by Cheapflights users on 6/10. 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.
Fri 7/109:07 pm
FCA
- BOS
2 stops33h 21m
Multiple Airlines
Fri 7/1711:53 am
BOS
- FCA
1 stop24h 07m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$704
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/1111:00 am
FCA
- BOS
1 stop20h 33m
Sun Country Air
Fri 7/1710:33 am
BOS
- FCA
1 stop25h 27m
Sun Country Air
Deal found 6/10![Sun Country Air logo]()
$534
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/1111:00 am
FCA
- BOS
1 stop20h 33m
Multiple Airlines
Thu 7/1612:06 pm
BOS
- FCA
2 stops23h 54m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$568
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/1111:00 am
FCA
- BOS
1 stop20h 33m
Sun Country Air
Thu 7/1610:35 am
BOS
- FCA
1 stop30h 12m
Sun Country Air
Deal found 6/10![Sun Country Air logo]()
$655
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/1210:14 am
FCA
- BOS
1 stop22h 24m
Sun Country Air
Fri 7/1711:53 am
BOS
- FCA
1 stop24h 07m
Sun Country Air
Deal found 6/10![Sun Country Air logo]()
$567
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/1210:14 am
FCA
- BOS
1 stop22h 24m
Multiple Airlines
Thu 7/1612:06 pm
BOS
- FCA
2 stops23h 54m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$601
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/1210:14 am
FCA
- BOS
1 stop22h 24m
Sun Country Air
Thu 7/1610:35 am
BOS
- FCA
1 stop30h 12m
Sun Country Air
Deal found 6/10![Sun Country Air logo]()
$688
One-way flights from Kalispell to BostonSearch for one-way flight options from Kalispell to Boston. Find affordable one-way fares based on user searches. Data last updated June 12, 2026.
Search for one-way flight options from Kalispell to Boston. Find affordable one-way fares based on user searches. Data last updated June 12, 2026.
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Thu 9/103:58 pm
FCA
- BOS
1 stop7h 16m
United Airlines
Deal found 6/11![United Airlines logo]()
$179
This Alaska Airlines deal was found by Cheapflights users on 6/8. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/248:21 pm
FCA
- BOS
1 stop9h 18m
Alaska Airlines
Deal found 6/8![Alaska Airlines logo]()
$225
This United Airlines deal was found by Cheapflights users on 6/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/124:17 pm
FCA
- BOS
1 stop6h 57m
United Airlines
Deal found 6/9![United Airlines logo]()
$234
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/2011:04 am
FCA
- BOS
1 stop20h 29m
Sun Country Air
Deal found 6/8![Sun Country Air logo]()
$250
This Kiwi.com deal was found by Cheapflights users on 6/11. 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.
Mon 8/1711:11 am
FCA
- BOS
1 stop21h 27m
Sun Country Air
Deal found 6/11![Sun Country Air logo]()
$256
This Delta deal was found by Cheapflights users on 6/8. 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 6/203:29 pm
FCA
- BOS
1 stop6h 29m
Delta
Deal found 6/8![Delta logo]()
$260
This United Airlines deal was found by Cheapflights users on 6/10. 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 9/910:45 am
FCA
- BOS
2 stops10h 45m
United Airlines
Deal found 6/10![United Airlines logo]()
$262
This Delta deal was found by Cheapflights users on 6/10. 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 8/173:14 pm
FCA
- BOS
1 stop6h 44m
Delta
Deal found 6/10![Delta logo]()
$275
This American Airlines deal was found by Cheapflights users on 6/10. 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 8/124:50 pm
FCA
- BOS
1 stop14h 47m
American Airlines
Deal found 6/10![American Airlines logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/2910:31 am
FCA
- BOS
3 stops36h 56m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$285
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 June 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $357 (Delta) |
One-way from | $179 (United Airlines) |
Popular in | August |
Cheapest in | December |
Average price | $582 |
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 June 12, 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
Cheapest round-trip
Quickest round-trip
KalispellBoston
FCA - BOS
FCABOS
Kalispell Glacier Park
Thu 10/22
1:29 pm-10:24 pm
1 stop6h 55m
Boston Logan Intl
Mon 10/26
5:40 am-12:29 pm
1 stop8h 49m
$357
KalispellBoston
FCA - BOS
FCABOS
Kalispell Glacier Park
Sat 9/26
6:35 am-5:25 pm
1 stop8h 50m
Boston Logan Intl
Sun 10/11
5:40 am-12:29 pm
1 stop8h 49m
$357
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
7:00 am-7:05 pm
1 stop14h 05m
$408
KalispellBoston
FCA - BOS
FCABOS
Kalispell Glacier Park
Tue 9/1
4:17 pm-1:14 am
1 stop6h 57m
Boston Logan Intl
Tue 9/15
9:33 am-9:21 pm
2 stops13h 48m
$472
KalispellBoston
FCA - BOS
FCABOS
Kalispell Glacier Park
Sat 9/5
4:17 pm-1:14 am
1 stop6h 57m
Boston Logan Intl
Sat 9/12
8:00 am-3:54 pm
2 stops9h 54m
$475
KalispellBoston
FCA - BOS
FCABOS
Kalispell Glacier Park
Thu 10/22
1:24 pm-7:37 am
2 stops16h 13m
Boston Logan Intl
Mon 10/26
6:52 am-12:28 pm
1 stop7h 36m
$509
KalispellBoston
FCA - BOS
FCABOS
Kalispell Glacier Park
Thu 8/6
4:34 pm-7:40 am
1 stop13h 06m
Boston Logan Intl
Mon 8/10
4:33 pm-12:30 pm
1 stop21h 57m
$509
KalispellBoston
FCA - BOS
FCABOS
Kalispell Glacier Park
Mon 10/12
1:29 pm-11:53 pm
1 stop8h 24m
Boston Logan Intl
Mon 10/19
5:40 am-12:29 pm
1 stop8h 49m
$544
KalispellBoston
FCA - BOS
FCABOS
Kalispell Glacier Park
Thu 8/13
4:17 pm-1:14 am
1 stop6h 57m
Boston Logan Intl
Sun 8/23
8:05 am-6:54 pm
1 stop12h 49m
$550
Cheapest one-way
Quickest one-way
KalispellBoston
FCA - BOS
FCABOS
Kalispell Glacier Park
Tue 9/1
4:17 pm-1:14 am
1 stop6h 57m
$179
Showing 1-10 of 20 resultsSorted by cheapest first
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 June.
| 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 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.
FCA-BOS
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
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 June 12, 2026.
Peruse reviews from past customers who have flown with Delta,United Airlines, andAmerican 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.
Food
7.2
Boarding
8.1
Overall
7.9
Entertainment
7.8
Crew
8.5
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Boarding
8.1
Overall
7.9
Entertainment
7.8
Crew
8.5
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Boarding
8.1
Overall
7.9
Entertainment
7.8
Crew
8.5
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Boarding
8.1
Overall
7.9
Entertainment
7.8
Crew
8.5
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
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.
Traveling to a place near Boston?
Book flights to Boston if you plan to visit one of these locationsWaltham
Cambridge
Concord
Hampton Beach
Brockton
Watertown
Seekonk
Cranston
Warwick
Peabody
Auburn
York Beach
Chelsea
Londonderry
Swansea
Old Orchard Beach
Lowell
Smithfield
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.
Alternative routes
Boston flight routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Kalispell
Popular flights
Alternative routes for Kalispell to Boston
See prices for flight routes from nearby airports that may be better suited for you.
Other flights to Boston
Explore flights to Boston departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on June 12, 2026.
Complete your trip
Complete your trip to Boston by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Kalispell to Boston by cabin class
Find flights from Kalispell to Boston, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Kalispell and Boston flights
Browse other Kalispell and Boston flight options. Last updated on June 12, 2026.
Other flights from Kalispell
Browse through other flights departing from Kalispell. Flights are based on user searches made on Cheapflights and were last updated on June 12, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from Kalispell to Boston
Discover the top 3 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 June 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$286 | Average$517 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$356 | Average$656 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$381 | Average$604 | FlexibilityNo cancel fee | On-time69% |