$187+ Cheap flights from Kalispell to Boston (FCA - BOS)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/17. Fares are subject to change and may not be available on all flights or dates of travel.
FCA — BOS
Oct 11 — Oct 181
Round-trip
1 adult, Economy
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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
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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
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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 September 11, 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 September 11, 2026.
This United Airlines deal was found by Cheapflights users on 9/10. 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 10/272:36 pm -
1 stop7h 14m
Sat 10/313:05 pm -
1 stop8h 46m
Deal found 9/10![United Airlines logo]()
$379
This United Airlines deal was found by Cheapflights users on 9/9. 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 10/272:36 pm -
1 stop7h 14m
Fri 10/306:00 am -
2 stops9h 34m
Deal found 9/9![United Airlines logo]()
$384
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Fri 10/24:17 pm -
1 stop11h 54m
Sat 10/106:00 am -
1 stop7h 28m
Deal found 9/10![United Airlines logo]()
$397
This Alaska Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/167:45 pm -
1 stop9h 41m
Sat 10/247:03 am -
1 stop14h 02m
Deal found 9/9![Alaska Airlines logo]()
$409
This United Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/132:36 pm -
1 stop7h 14m
Wed 12/211:47 am -
2 stops11h 59m
Deal found 9/8![United Airlines logo]()
$414
This American Airlines deal was found by Cheapflights users on 9/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/231:34 pm -
1 stop8h 20m
Mon 9/287:00 am -
1 stop7h 44m
Deal found 9/7![American Airlines logo]()
$419
This United Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/612:26 pm -
1 stop7h 33m
Fri 10/166:00 am -
1 stop11h 16m
Deal found 9/6![United Airlines logo]()
$423
This Alaska Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/167:45 pm -
1 stop9h 41m
Fri 10/239:03 am -
1 stop12h 02m
Deal found 9/9![Alaska Airlines logo]()
$439
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 September 11, 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 September 11, 2026.
This United Airlines deal was found by Cheapflights users on 9/9. 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 10/272:36 pm -
1 stop7h 14m
Fri 10/306:00 am -
2 stops9h 34m
Deal found 9/9![United Airlines logo]()
$384
This Alaska Airlines deal was found by Cheapflights users on 9/5. 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 11/101:55 pm -
1 stop8h 03m
Sat 11/144:33 pm -
1 stop9h 26m
Deal found 9/5![Alaska Airlines logo]()
$409
This Alaska Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/167:45 pm -
1 stop9h 41m
Fri 10/239:03 am -
1 stop12h 02m
Deal found 9/9![Alaska Airlines logo]()
$439
This United Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1612:26 pm -
1 stop8h 58m
Sat 10/246:00 am -
2 stops9h 28m
Deal found 9/6![United Airlines logo]()
$514
This Alaska Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/258:21 pm -
1 stop9h 18m
Fri 10/24:48 pm -
1 stop21h 35m
Deal found 9/7![Alaska Airlines logo]()
$489
This United Airlines deal was found by Cheapflights users on 9/9. 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 10/1310:45 am -
2 stops12h 09m
Tue 10/206:00 am -
1 stop7h 28m
Deal found 9/9![United Airlines logo]()
$579
This United Airlines deal was found by Cheapflights users on 9/10. 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 9/226:20 am -
2 stops10h 59m
Sat 10/37:45 am -
1 stop7h 43m
Deal found 9/10![United Airlines logo]()
$584
Last-minute flights from Kalispell to BostonDiscover last-minute flight deals from Kalispell to Boston. Data last updated September 11, 2026 and is based on user searches.
Discover last-minute flight deals from Kalispell to Boston. Data last updated September 11, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/231:34 pm -
1 stop8h 20m
Mon 9/287:00 am -
1 stop7h 44m
Deal found 9/7![American Airlines logo]()
$419
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Fri 10/24:17 pm -
1 stop11h 54m
Sat 10/106:00 am -
1 stop7h 28m
Deal found 9/10![United Airlines logo]()
$397
This United Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/612:26 pm -
1 stop7h 33m
Fri 10/166:00 am -
1 stop11h 16m
Deal found 9/6![United Airlines logo]()
$423
This Alaska Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/167:45 pm -
1 stop9h 41m
Sat 10/247:03 am -
1 stop14h 02m
Deal found 9/9![Alaska Airlines logo]()
$409
This Alaska Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/167:45 pm -
1 stop9h 41m
Fri 10/239:03 am -
1 stop12h 02m
Deal found 9/9![Alaska Airlines logo]()
$439
This United Airlines deal was found by Cheapflights users on 9/10. 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 10/272:36 pm -
1 stop7h 14m
Sat 10/313:05 pm -
1 stop8h 46m
Deal found 9/10![United Airlines logo]()
$379
This United Airlines deal was found by Cheapflights users on 9/9. 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 10/272:36 pm -
1 stop7h 14m
Fri 10/306:00 am -
2 stops9h 34m
Deal found 9/9![United Airlines logo]()
$384
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Tue 10/271:58 pm -
2 stops16h 48m
Sat 10/317:00 am -
1 stop8h 27m
Deal found 9/10![American Airlines logo]()
$452
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 September 11, 2026.
Search for one-way flight options from Kalispell to Boston. Find affordable one-way fares based on user searches. Data last updated September 11, 2026.
This Trip.com deal was found by Cheapflights users on 9/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/177:45 pm -
1 stop9h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Alaska Airlines logo]()
$187
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Fri 10/21:34 pm -
1 stop8h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![American Airlines logo]()
$189
This Delta deal was found by Cheapflights users on 9/10. 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.
Sat 10/36:00 pm -
1 stop10h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Delta logo]()
$190
This United Airlines deal was found by Cheapflights users on 9/9. 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 10/312:26 pm -
2 stops9h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![United Airlines logo]()
$195
This United Airlines deal was found by Cheapflights users on 9/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/112:26 pm -
1 stop8h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![United Airlines logo]()
$200
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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.
Mon 9/288:21 pm -
1 stop9h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Alaska Airlines logo]()
$230
This American Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/131:58 pm -
1 stop7h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![American Airlines logo]()
$245
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 10/177:15 am -
2 stops15h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![United Airlines logo]()
$250
This United Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3010:45 am -
2 stops12h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![United Airlines logo]()
$260
This United Airlines deal was found by Cheapflights users on 9/10. 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 10/66:05 am -
2 stops14h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![United Airlines logo]()
$268
This American Airlines deal was found by Cheapflights users on 9/8. 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 9/301:34 pm -
1 stop8h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![American Airlines logo]()
$270
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 September 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $379 (United Airlines) |
One-way from | $187 (Trip.com) |
Popular in | February |
Cheapest in | December |
Average price | $478 |
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 7,457,451 searches. Data last updated September 11, 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 Kalispell Glacier Park - BOS Boston Logan Intl
FCABOS
Kalispell Glacier Park
Fri 10/30
3:36 pm-12:20 am
1 stop6h 44m
Boston Logan Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$190
KalispellBoston
FCA Kalispell Glacier Park - BOS Boston Logan Intl
FCABOS
Kalispell Glacier Park
Sat 10/3
6:00 pm-6:30 am
1 stop10h 30m
Boston Logan Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$190
KalispellBoston
FCA Kalispell Glacier Park - BOS Boston Logan Intl
FCABOS
Kalispell Glacier Park
Sat 10/3
12:26 pm-11:59 pm
2 stops9h 33m
Boston Logan Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$195
KalispellBoston
FCA Kalispell Glacier Park - BOS Boston Logan Intl
FCABOS
Kalispell Glacier Park
Thu 10/1
12:26 pm-11:24 pm
1 stop8h 58m
Boston Logan Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$200
KalispellBoston
FCA Kalispell Glacier Park - BOS Boston Logan Intl
FCABOS
Kalispell Glacier Park
Thu 10/15
2:12 pm-11:36 pm
1 stop7h 24m
Boston Logan Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$245
KalispellBoston
FCA Kalispell Glacier Park - BOS Boston Logan Intl
FCABOS
Kalispell Glacier Park
Sat 10/17
7:15 am-12:54 am
2 stops15h 39m
Boston Logan Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$250
KalispellBoston
FCA Kalispell Glacier Park - BOS Boston Logan Intl
FCABOS
Kalispell Glacier Park
Wed 9/30
10:45 am-12:54 am
2 stops12h 09m
Boston Logan Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$260
KalispellBoston
FCA Kalispell Glacier Park - BOS Boston Logan Intl
FCABOS
Kalispell Glacier Park
Tue 10/13
1:58 pm-11:36 pm
1 stop7h 38m
Boston Logan Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$290
KalispellBoston
FCA Kalispell Glacier Park - BOS Boston Logan Intl
FCABOS
Kalispell Glacier Park
Thu 9/17
12:35 pm-9:59 pm
1 stop7h 24m
Boston Logan Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$290
KalispellBoston
FCA Kalispell Glacier Park - BOS Boston Logan Intl
FCABOS
Kalispell Glacier Park
Tue 10/27
2:36 pm-11:50 pm
1 stop7h 14m
Boston Logan Intl
Fri 10/30
6:00 am-1:34 pm
2 stops9h 34m
$384
Showing 1-10 of 16 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 September.
| 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 September 11, 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.
Boarding
8.1
Overall
7.8
Crew
8.5
Entertainment
7.8
Comfort
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodColin,Sep 2024
LHR - BOS
Boarding
8.1
Overall
7.8
Crew
8.5
Entertainment
7.8
Comfort
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodColin,Sep 2024
LHR - BOS
Boarding
8.1
Overall
7.8
Crew
8.5
Entertainment
7.8
Comfort
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodColin,Sep 2024
LHR - BOS
Boarding
8.1
Overall
7.8
Crew
8.5
Entertainment
7.8
Comfort
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodColin,Sep 2024
LHR - BOS
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
Randolph
Concord
Cambridge
Brockton
Seekonk
Dedham
Cranston
Warwick
Pawtucket
Peabody
Auburn
Revere
York Beach
Londonderry
Fitchburg
North Falmouth
Swansea
Chelsea
Braintree
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Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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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 September 11, 2026.
Complete your trip
Complete your trip to Boston by adding a car rental and/or hotel reservation to your travel itinerary.
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Kalispell and Boston flights
Browse other Kalispell and Boston flight options. Last updated on September 11, 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 September 11, 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 7,457,451 searches. Data last updated September 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$296 | Average$517 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$356 | Average$568 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$388 | Average$642 | FlexibilityNo cancel fee | On-time69% |