$200+ 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 12/19. Fares are subject to change and may not be available on all flights or dates of travel.
FCA — BOS
Nov 21 — Nov 281
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
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
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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 October 22, 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 October 22, 2026.
This Delta deal was found by Cheapflights users on 10/19. 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.
Tue 11/106:17 pm -
1 stop10h 03m
Fri 11/1311:00 am -
1 stop8h 37m
Deal found 10/19![Delta logo]()
$399
This Delta deal was found by Cheapflights users on 10/19. 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.
Tue 11/1012:25 pm -
1 stop9h 32m
Tue 11/172:59 pm -
2 stops9h 46m
Deal found 10/19![Delta logo]()
$404
This Delta deal was found by Cheapflights users on 10/19. 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.
Tue 11/105:11 am -
2 stops12h 44m
Sat 11/142:59 pm -
2 stops9h 58m
Deal found 10/19![Delta logo]()
$409
This United Airlines deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/162:36 pm -
1 stop7h 14m
Mon 11/2310:30 am -
2 stops13h 21m
Deal found 10/18![United Airlines logo]()
$426
This Delta deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/46:13 pm -
1 stop10h 12m
Wed 11/1111:00 am -
1 stop8h 37m
Deal found 10/21![Delta logo]()
$439
This Delta deal was found by Cheapflights users on 10/18. 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.
Thu 11/56:13 pm -
2 stops15h 02m
Tue 11/1011:00 am -
1 stop8h 37m
Deal found 10/18![Delta logo]()
$444
This Delta deal was found by Cheapflights users on 10/18. 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.
Sun 11/16:13 pm -
2 stops14h 49m
Thu 11/121:00 pm -
2 stops11h 45m
Deal found 10/18![Delta logo]()
$449
This deal was found by Cheapflights users on 10/20. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/35:30 am -
1 stop9h 08m
Wed 11/1111:00 am -
1 stop8h 37m
Deal found 10/20![Delta logo]()
$459
This Delta deal was found by Cheapflights users on 10/19. 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 11/163:35 pm -
2 stops14h 47m
Thu 11/196:05 am -
2 stops13h 32m
Deal found 10/19![Delta logo]()
$462
This Delta deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/75:30 am -
2 stops11h 41m
Tue 11/107:15 am -
1 stop9h 25m
Deal found 10/20![Delta logo]()
$464
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 October 22, 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 October 22, 2026.
This United Airlines deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/36:15 am -
2 stops9h 40m
Tue 12/811:35 am -
2 stops12h 16m
Deal found 10/18![United Airlines logo]()
$409
This Delta deal was found by Cheapflights users on 10/18. 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.
Thu 11/512:28 pm -
1 stop9h 31m
Sun 11/87:20 am -
1 stop9h 21m
Deal found 10/18![Delta logo]()
$439
This Delta deal was found by Cheapflights users on 10/18. 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 11/75:30 am -
2 stops9h 41m
Fri 11/137:15 am -
1 stop9h 25m
Deal found 10/18![Delta logo]()
$444
This Delta deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/46:13 pm -
1 stop10h 12m
Wed 11/116:05 am -
2 stops13h 32m
Deal found 10/21![Delta logo]()
$444
This United Airlines deal was found by Cheapflights users on 10/19. 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.
Fri 11/132:36 pm -
1 stop7h 14m
Mon 11/167:15 am -
1 stop8h 19m
Deal found 10/19![United Airlines logo]()
$529
This United Airlines deal was found by Cheapflights users on 10/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/102:36 pm -
1 stop7h 14m
Sat 11/147:15 am -
1 stop8h 19m
Deal found 10/20![United Airlines logo]()
$529
Last-minute flights from Kalispell to BostonDiscover last-minute flight deals from Kalispell to Boston. Data last updated October 22, 2026 and is based on user searches.
Discover last-minute flight deals from Kalispell to Boston. Data last updated October 22, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 10/18. 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.
Sun 11/16:13 pm -
2 stops14h 49m
Sat 11/142:25 pm -
2 stops10h 32m
Deal found 10/18![Delta logo]()
$449
This deal was found by Cheapflights users on 10/20. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/35:30 am -
1 stop9h 08m
Wed 11/1111:00 am -
1 stop8h 37m
Deal found 10/20![Delta logo]()
$459
This Delta deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/46:13 pm -
1 stop10h 12m
Wed 11/1111:00 am -
1 stop8h 37m
Deal found 10/21![Delta logo]()
$439
This Delta deal was found by Cheapflights users on 10/18. 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.
Thu 11/56:13 pm -
2 stops15h 02m
Tue 11/1011:00 am -
1 stop8h 37m
Deal found 10/18![Delta logo]()
$444
This Delta deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/75:30 am -
2 stops11h 41m
Tue 11/107:15 am -
1 stop9h 25m
Deal found 10/20![Delta logo]()
$464
This Delta deal was found by Cheapflights users on 10/19. 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.
Tue 11/105:11 am -
1 stop9h 15m
Sat 11/144:45 pm -
1 stop8h 12m
Deal found 10/19![Delta logo]()
$399
This Delta deal was found by Cheapflights users on 10/19. 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.
Tue 11/1012:25 pm -
1 stop9h 32m
Thu 11/196:05 am -
2 stops13h 32m
Deal found 10/19![Delta logo]()
$404
This deal was found by Cheapflights users on 10/20. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/105:11 am -
1 stop9h 15m
Fri 11/1311:00 am -
1 stop8h 37m
Deal found 10/20![Delta logo]()
$419
This United Airlines deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/162:36 pm -
1 stop7h 14m
Mon 11/2310:30 am -
2 stops13h 21m
Deal found 10/18![United Airlines logo]()
$426
This Delta deal was found by Cheapflights users on 10/19. 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 11/163:35 pm -
2 stops14h 47m
Thu 11/196:05 am -
2 stops13h 32m
Deal found 10/19![Delta logo]()
$462
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 October 22, 2026.
Search for one-way flight options from Kalispell to Boston. Find affordable one-way fares based on user searches. Data last updated October 22, 2026.
This United Airlines deal was found by Cheapflights users on 10/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/2212:46 pm -
1 stop7h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![United Airlines logo]()
$200
This Delta deal was found by Cheapflights users on 10/19. 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 2/266:10 pm -
1 stop10h 01m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Delta logo]()
$210
This Kiwi.com deal was found by Cheapflights users on 10/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/227:21 pm -
3 stops36h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Multiple Airlines logo]()
$225
This United Airlines deal was found by Cheapflights users on 10/19. 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.
Sat 11/72:36 pm -
1 stop7h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![United Airlines logo]()
$240
This Alaska Airlines deal was found by Cheapflights users on 10/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/268:01 am -
1 stop13h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Alaska Airlines logo]()
$305
This Delta deal was found by Cheapflights users on 10/17. 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.
Sat 12/198:25 am -
2 stops10h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/17![Delta logo]()
$345
This United Airlines deal was found by Cheapflights users on 10/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:14 am -
2 stops11h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![United Airlines logo]()
$370
This Kiwi.com deal was found by Cheapflights users on 10/19. 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.
Fri 2/266:42 pm -
3 stops38h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Multiple Airlines logo]()
$372
This Delta deal was found by Cheapflights users on 10/19. 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.
Sat 11/73:36 pm -
1 stop6h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Delta logo]()
$580
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 October 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $399 (Delta) |
One-way from | $200 (United Airlines) |
Popular in | February |
Cheapest in | December |
Average price | $423 |
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 October 22, 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
KalispellBoston
FCA Kalispell Glacier Park - BOS Boston Logan Intl
FCABOS
Kalispell Glacier Park
Sat 12/19
12:36 pm-11:59 pm
1 stop9h 23m
Boston Logan Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$200
Quickest round-trip
KalispellBoston
FCA Kalispell Glacier Park - BOS Boston Logan Intl
FCABOS
Kalispell Glacier Park
Fri 1/22
12:46 pm-9:53 pm
1 stop7h 07m
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
Fri 2/26
6:10 pm-6:11 am
1 stop10h 01m
Boston Logan Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$210
KalispellBoston
FCA Kalispell Glacier Park - BOS Boston Logan Intl
FCABOS
Kalispell Glacier Park
Sat 11/7
2:36 pm-11:50 pm
1 stop7h 14m
Boston Logan Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$240
KalispellBoston
FCA Kalispell Glacier Park - BOS Boston Logan Intl
FCABOS
Kalispell Glacier Park
Fri 2/26
6:31 am-9:56 pm
2 stops13h 25m
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
Mon 10/26
8:01 am-11:59 pm
1 stop13h 58m
Boston Logan Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$305
KalispellBoston
FCA Kalispell Glacier Park - BOS Boston Logan Intl
FCABOS
Kalispell Glacier Park
Mon 10/26
6:14 am-7:14 pm
2 stops11h 00m
Boston Logan Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$370
KalispellBoston
FCA Kalispell Glacier Park - BOS Boston Logan Intl
FCABOS
Kalispell Glacier Park
Thu 12/3
6:15 am-5:55 pm
2 stops9h 40m
Boston Logan Intl
Tue 12/8
11:35 am-9:51 pm
2 stops12h 16m
$409
KalispellBoston
FCA Kalispell Glacier Park - BOS Boston Logan Intl
FCABOS
Kalispell Glacier Park
Thu 11/5
12:28 pm-11:59 pm
1 stop9h 31m
Boston Logan Intl
Sun 11/8
7:20 am-2:41 pm
1 stop9h 21m
$439
KalispellBoston
FCA Kalispell Glacier Park - BOS Boston Logan Intl
FCABOS
Kalispell Glacier Park
Sat 11/7
5:30 am-5:11 pm
2 stops9h 41m
Boston Logan Intl
Fri 11/13
7:15 am-2:40 pm
1 stop9h 25m
$444
Showing 1-10 of 13 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 October.
| 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 October 22, 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.
Crew
8.5
Comfort
7.8
Overall
7.8
Boarding
8.1
Food
7.2
Entertainment
7.8
Reviews
1 / 20
6.0
GoodColin,Sep 2024
LHR - BOS
Crew
8.5
Comfort
7.8
Overall
7.8
Boarding
8.1
Food
7.2
Entertainment
7.8
Reviews
1 / 20
6.0
GoodColin,Sep 2024
LHR - BOS
Crew
8.5
Comfort
7.8
Overall
7.8
Boarding
8.1
Food
7.2
Entertainment
7.8
Reviews
1 / 20
6.0
GoodColin,Sep 2024
LHR - BOS
Crew
8.5
Comfort
7.8
Overall
7.8
Boarding
8.1
Food
7.2
Entertainment
7.8
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
Dedham
Cranston
Warwick
Pawtucket
Peabody
Fitchburg
Londonderry
York Beach
Revere
North Falmouth
Chelsea
Swansea
Braintree
Auburn
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.
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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 October 22, 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 October 22, 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 October 22, 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 October 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$296 | Average$484 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$356 | Average$568 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$396 | Average$618 | FlexibilityNo cancel fee | On-time69% |