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$169+ 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 11/6. Fares are subject to change and may not be available on all flights or dates of travel.
FCA — BOS
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
1 adult, Economy
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Cheap 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 septiembre 11, 2025.

Round-trip from

$337
(Delta)

One-way from

$169
(Delta)

Popular in

July

Cheapest in

January

Average price

$589
From Kalispell Glacier Park to Boston Logan Intl
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One-way flight from Kalispell Glacier Park to Boston Logan Intl
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Highest demand for flights based on searches. 10% potential increase in price ($63 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($21 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Kalispell to Boston

Cheapest flights from Kalispell to Boston
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 septiembre 11, 2025.

This Delta deal was found by Cheapflights users on 9/11. 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.
jue. 11/66:10 pmFCA - BOS
1 stop10h 30mDelta
mar. 11/185:50 amBOS - FCA
1 stop10h 06mDelta
Deal found 9/11$337
This Delta deal was found by Cheapflights users on 9/11. 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.
vie. 11/712:00 pmFCA - BOS
2 stops11h 13mDelta
mar. 11/181:00 pmBOS - FCA
2 stops12h 00mDelta
Deal found 9/11$347
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/171:14 pmFCA - BOS
1 stop19h 07mAmerican Airlines
dom. 10/195:24 amBOS - FCA
1 stop9h 19mAmerican Airlines
Deal found 9/9$356
This Delta deal was found by Cheapflights users on 9/11. 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.
sáb. 11/226:06 pmFCA - BOS
1 stop10h 24mDelta
mié. 12/35:45 amBOS - FCA
1 stop10h 11mDelta
Deal found 9/11$368
This United Airlines deal was found by Cheapflights users on 9/11. 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.
vie. 9/264:08 pmFCA - BOS
1 stop11h 59mUnited Airlines
mar. 9/307:30 amBOS - FCA
1 stop7h 55mUnited Airlines
Deal found 9/11$370
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.
mié. 9/2410:47 amFCA - BOS
2 stops11h 10mUnited Airlines
dom. 9/286:00 amBOS - FCA
1 stop7h 35mUnited Airlines
Deal found 9/8$382
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.
jue. 9/2512:41 pmFCA - BOS
1 stop7h 04mUnited Airlines
lun. 9/296:00 amBOS - FCA
2 stops9h 25mUnited Airlines
Deal found 9/10$392
This Delta deal was found by Cheapflights users on 9/11. 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.
jue. 11/66:10 pmFCA - BOS
1 stop10h 30mDelta
lun. 11/178:59 pmBOS - FCA
2 stops18h 57mDelta
Deal found 9/11$398
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 10/261:14 pmFCA - BOS
1 stop19h 09mAmerican Airlines
vie. 10/315:24 amBOS - FCA
1 stop9h 19mAmerican Airlines
Deal found 9/9$407

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 septiembre 11, 2025.
Use the filters below to find and compare flights from Kalispell to Boston that are best for you.

Fly from

Kalispell

Fly to

Boston

Route

Depart

Return

Price

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

vie. 11/7

6:10 pm-6:40 am

1 stop10h 30m

Boston Logan Intl

lun. 11/17

5:50 am-1:56 pm

1 stop10h 06m

$337

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

sáb. 11/8

5:20 am-4:12 pm

1 stop8h 52m

Boston Logan Intl

lun. 11/17

5:50 am-1:56 pm

1 stop10h 06m

$337

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

mar. 3/10

3:00 pm-11:59 pm

1 stop6h 59m

Boston Logan Intl

mié. 3/11

7:50 am-1:51 pm

1 stop8h 01m

$337

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

vie. 11/7

3:24 pm-11:59 pm

1 stop6h 35m

Boston Logan Intl

mié. 11/19

8:00 am-1:56 pm

1 stop7h 56m

$337

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

mar. 11/11

2:38 pm-11:39 pm

1 stop7h 01m

Boston Logan Intl

mié. 11/19

10:25 am-9:44 pm

2 stops13h 19m

$342

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

jue. 11/6

6:10 pm-6:40 am

1 stop10h 30m

Boston Logan Intl

mar. 11/18

5:29 am-1:56 pm

2 stops10h 27m

$342

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

jue. 11/6

6:10 pm-6:40 am

1 stop10h 30m

Boston Logan Intl

mié. 11/19

5:29 am-1:56 pm

2 stops10h 27m

$342

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

sáb. 11/8

12:00 pm-11:48 pm

1 stop9h 48m

Boston Logan Intl

mié. 11/19

5:29 am-1:56 pm

2 stops10h 27m

$342

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

mar. 11/11

5:05 am-8:00 pm

2 stops12h 55m

Boston Logan Intl

mié. 11/19

5:29 am-1:56 pm

2 stops10h 27m

$347

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

jue. 11/6

6:10 pm-6:40 am

1 stop10h 30m

$169

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 16 results
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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.
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

What is the cheapest month to book a flight from Kalispell to Boston?

Currently, January is the cheapest month in which you can book a flight from Kalispell to Boston (average of $218). Flying from Kalispell to Boston in July is currently the most expensive (average of $311). 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.

What is the cheapest time of day to fly from FCA to BOS?

Find hourly flight availability from Kalispell to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 11, 2025.

It’s optimal to fly from Kalispell to Boston at noon. By choosing this option you can save up to 21% on the cost of your flight, compared to a flight in the morning.

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 septiembre 11, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta, and United 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.0

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.0

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
8.0
Very good
7,960 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.0

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
8,937 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.0

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.0

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

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.

  • How long is the flight from Kalispell to Boston?

    Departing from Kalispell to Boston will take you 10h 30m. The distance from Kalispell to Boston is about 2110 mi.

  • What are the cheapest airlines flying from Kalispell to Boston round-trip?

    Our cheapest airline available from Kalispell to Boston is American Airlines. Our recent data shows that you can find tickets from as low as $306 on this airline. Additional options worth looking into are Delta and Alaska Airlines, starting at $306 and $397 round-trip. American Airlines is 43% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Kalispell to Boston that include hotel bookings?

    Yes. In addition to deals on Kalispell to Boston flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Kalispell to Boston?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Kalispell to Boston.

  • Can I find deals for business class flights from Kalispell to Boston?

    Yes. Cheapflights offers flight deals from Kalispell to Boston by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Kalispell to Boston?

    Currently, January is the cheapest month in which you can book a flight from Kalispell to Boston (average of $218). Flying from Kalispell to Boston in July is currently the most expensive (average of $311). 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.

See more FAQs

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Cambridge
Medford
Hampton Beach
Watertown
Seabrook
Seekonk
Lincoln
Lowell
Smithfield
Cranston
Chestnut Hill
Chelsea
Warwick
Peabody
Quincy
York Beach
Swansea
Waltham
Saugus
Burlington

Browse thousands of different options on Cheapflights for your next trip

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Top 4 airlines flying from Kalispell to Boston

Discover the top 4 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 septiembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$306Average$649FlexibilityNo cancel feeOn-time71%
DeltaCheapest$306Average$472FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$397Average$660FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$421Average$582FlexibilityNo cancel feeOn-time69%

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