How long is the flight from Kalispell to Boston?

Departing from Kalispell to Boston will take you 7h 10m. The distance from Kalispell to Boston is about 2110 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

Our cheapest airline available from Kalispell to Boston is Delta. Our recent data shows that you can find tickets from as low as $296 on this airline. Additional options worth looking into are United Airlines and Alaska Airlines, starting at $388 and $397 round-trip. Delta is 44% cheaper than the average price of flights available within the next 90 days to this destination.

What are the cheapest airlines to fly from Kalispell to Boston one-way?

For one-way options, check prices for Alaska Airlines. According to our data, you can fly for as low as $148. Users have also found prices from $158 and $173 on Delta and American Airlines, respectively.

In terms of precipitation, rainfall in Boston ranges from 3.1 - 4.0 inches per month. March is typically the wettest month, when rainfall can reach 4.0 in. July is typically the driest time to visit Boston when rainfall is around 3.1 in.

If weather is an important factor for your trip to Boston, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

What are the most popular airlines that fly from Kalispell to Boston?

When booking a flight from Kalispell to Boston, you may want to consider flying on Delta, United Airlines or Alaska Airlines as they are the most popular for this route.

Most accurate provider : When it comes to deals on Kalispell-Boston flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Kalispell-Boston flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

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.

$149+ Flights from Kalispell to Boston

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Cheap 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 December 12, 2025.

Wed 12/241:39 pmFCA - BOS

1 stop9h 14mUnited Airlines

Wed 12/316:01 amBOS - FCA

1 stop7h 41mUnited Airlines

Deal found 12/10

$525

Wed 12/2412:38 pmFCA - BOS

1 stop7h 06mUnited Airlines

Tue 12/307:45 amBOS - FCA

1 stop29h 57mUnited Airlines

Deal found 12/10

$567

Sun 12/2112:38 pmFCA - BOS

1 stop7h 06mUnited Airlines

Thu 12/256:01 amBOS - FCA

1 stop7h 41mUnited Airlines

Deal found 12/10

$580

Sun 12/2112:38 pmFCA - BOS

2 stops9h 16mUnited Airlines

Wed 12/316:01 amBOS - FCA

1 stop7h 41mUnited Airlines

Deal found 12/10

$585

Mon 12/226:10 amFCA - BOS

1 stop7h 25mUnited Airlines

Thu 12/256:01 amBOS - FCA

1 stop7h 41mUnited Airlines

Deal found 12/10

$621

Sun 12/2112:38 pmFCA - BOS

1 stop7h 06mUnited Airlines

Tue 12/307:45 amBOS - FCA

1 stop29h 57mUnited Airlines

Deal found 12/10

$622

Mon 12/226:10 amFCA - BOS

2 stops14h 38mUnited Airlines

Wed 12/316:01 amBOS - FCA

1 stop7h 41mUnited Airlines

Deal found 12/10

$626

Best flights from Kalispell to Boston
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 December 12, 2025.

Sat 1/105:05 amFCA - BOS

1 stop7h 31mDelta

Sat 1/174:25 pmBOS - FCA

1 stop8h 53mDelta

Deal found 12/11

$297

Sat 1/102:42 pmFCA - BOS

1 stop7h 10mUnited Airlines

Sat 1/1710:30 amBOS - FCA

2 stops14h 50mUnited Airlines

Deal found 12/11

$302

Fri 5/83:00 pmFCA - BOS

1 stop6h 52mDelta

Tue 5/127:50 amBOS - FCA

1 stop7h 55mDelta

Deal found 12/11

$297

Wed 1/212:42 pmFCA - BOS

1 stop7h 04mUnited Airlines

Sat 1/243:15 pmBOS - FCA

1 stop8h 44mUnited Airlines

Deal found 12/9

$397

Fri 5/86:31 amFCA - BOS

2 stops9h 42mUnited Airlines

Tue 5/1210:44 amBOS - FCA

2 stops12h 46mUnited Airlines

Deal found 12/11

$452

Last-minute flights from Kalispell to Boston
Discover last-minute flight deals from Kalispell to Boston. Data last updated December 12, 2025 and is based on user searches.

Wed 12/2412:38 pmFCA - BOS

1 stop7h 06mUnited Airlines

Thu 12/256:01 amBOS - FCA

1 stop7h 41mUnited Airlines

Deal found 12/10

$525

Wed 12/2412:38 pmFCA - BOS

2 stops9h 16mUnited Airlines

Wed 12/315:20 amBOS - FCA

2 stops18h 39mUnited Airlines

Deal found 12/10

$548

Tue 1/62:42 pmFCA - BOS

1 stop7h 04mUnited Airlines

Sun 1/113:15 pmBOS - FCA

1 stop8h 44mUnited Airlines

Deal found 12/10

$514

Thu 1/82:42 pmFCA - BOS

1 stop7h 04mUnited Airlines

Thu 1/1510:30 amBOS - FCA

2 stops13h 29mUnited Airlines

Deal found 12/11

$543

Sat 1/105:05 amFCA - BOS

1 stop7h 31mDelta

Sat 1/174:25 pmBOS - FCA

1 stop8h 53mDelta

Deal found 12/11

$297

Sat 1/102:42 pmFCA - BOS

1 stop7h 10mUnited Airlines

Sat 1/1710:30 amBOS - FCA

2 stops14h 50mUnited Airlines

Deal found 12/11

$302

Wed 1/212:42 pmFCA - BOS

1 stop7h 04mUnited Airlines

Sat 1/243:15 pmBOS - FCA

1 stop8h 44mUnited Airlines

Deal found 12/9

$397

One-way flights from Kalispell to Boston
Search for one-way flight options from Kalispell to Boston. Find affordable one-way fares based on user searches. Data last updated December 12, 2025.

Thu 1/83:23 pmFCA - BOS

1 stop6h 29mDelta

Deal found 12/11

$149

Tue 3/177:53 pmFCA - BOS

1 stop9h 01mAlaska Airlines

Deal found 12/10

$194

Thu 1/87:46 pmFCA - BOS

2 stops17h 34mAlaska Airlines

Deal found 12/11

$252

Sun 3/85:44 pmFCA - BOS

3 stops52h 13mMultiple Airlines

Deal found 12/11

$264

Sun 3/812:52 pmFCA - BOS

1 stop24h 44mAlaska Airlines

Deal found 12/11

$266

Fri 3/201:53 pmFCA - BOS

1 stop8h 01mAlaska Airlines

Deal found 12/11

$437

Thu 1/82:42 pmFCA - BOS

3 stops20h 31mUnited Airlines

Deal found 12/11

$439

Sat 3/216:42 pmFCA - BOS

1 stop10h 30mAlaska Airlines

Deal found 12/11

$517

Thu 1/15:15 pmFCA - BOS

1 stop10h 43mUnited Airlines

Deal found 12/11

$522

Find flight deals from Kalispell to Boston

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$297 (Delta)
One-way from	$149 (Delta)
Popular in	July
Cheapest in	January
Average price	$453

Provider with most accurate pricing for Kalispell Glacier Park-Boston Logan Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Kalispell Glacier Park-Boston Logan Intl flights.

Search Deals

From Kalispell Glacier Park to Boston Logan Intl

Search Deals

One-way flight from Kalispell Glacier Park to Boston Logan Intl

Search Deals

Highest demand for flights based on searches. 10% potential increase in price ($60 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Sat 1/10

5:05 am-2:36 pm

1 stop7h 31m

Boston Logan Intl

Sat 1/17

4:25 pm-11:18 pm

1 stop8h 53m

$297

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Fri 5/8

3:00 pm-11:52 pm

1 stop6h 52m

Boston Logan Intl

Tue 5/12

7:50 am-1:45 pm

1 stop7h 55m

$297

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Sat 1/10

2:42 pm-11:52 pm

1 stop7h 10m

Boston Logan Intl

Sat 1/17

10:30 am-11:20 pm

2 stops14h 50m

$302

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Wed 1/21

2:42 pm-11:46 pm

1 stop7h 04m

Boston Logan Intl

Sat 1/24

3:15 pm-9:59 pm

1 stop8h 44m

$397

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Fri 5/8

6:31 am-6:13 pm

2 stops9h 42m

Boston Logan Intl

Tue 5/12

10:44 am-9:30 pm

2 stops12h 46m

$452

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Thu 1/8

3:23 pm-11:52 pm

1 stop6h 29m

$149

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Tue 3/17

7:53 pm-6:54 am

1 stop9h 01m

$194

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Thu 1/8

7:46 pm-3:20 pm

2 stops17h 34m

$252

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Sun 3/8

5:44 pm-11:57 pm

3 stops52h 13m

$264

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Sun 3/8

12:52 pm-3:36 pm

1 stop24h 44m

$266

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 14 results

Compare providers for flights from Kalispell to Boston

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Kalispell to Boston in December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Kalispell-Boston flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Kalispell-Boston flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

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, May is the cheapest month in which you can book a flight from Kalispell to Boston (average of $248). Flying from Kalispell to Boston in March is currently the most expensive (average of $404). 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?

It’s optimal to fly from Kalispell to Boston at noon. By choosing this option you can save up to 24% on the cost of your flight, compared to a flight in the evening.

Reviews of airlines servicing Boston

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

11,432 reviews

Reviews

1 / 20

2.0

Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.

Alaska Airlines

8.0

Very good

11,432 reviews

Alaska Airlines

8.0

Very good

11,432 reviews

Reviews

1 / 20

2.0

Mediocre

Art,Dec 2025

SAN - OGG

Delta

7.9

Good

8,008 reviews

Alaska Airlines

8.0

Very good

11,432 reviews

Reviews

1 / 20

2.0

Mediocre

Art,Dec 2025

SAN - OGG

United Airlines

7.4

Good

9,095 reviews

Alaska Airlines

8.0

Very good

11,432 reviews

Reviews

1 / 20

2.0

Mediocre

Art,Dec 2025

SAN - OGG

American Airlines

7.2

Good

11,050 reviews

Alaska Airlines

8.0

Very good

11,432 reviews

Reviews

1 / 20

2.0

Mediocre

Art,Dec 2025

SAN - OGG

Related info for your journey

How long is the flight from Kalispell to Boston?
Departing from Kalispell to Boston will take you 7h 10m. The distance from Kalispell to Boston is about 2110 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What are the cheapest airlines flying from Kalispell to Boston round-trip?
Our cheapest airline available from Kalispell to Boston is Delta. Our recent data shows that you can find tickets from as low as $296 on this airline. Additional options worth looking into are United Airlines and Alaska Airlines, starting at $388 and $397 round-trip. Delta is 44% cheaper than the average price of flights available within the next 90 days to this destination.
What are the cheapest airlines to fly from Kalispell to Boston one-way?
For one-way options, check prices for Alaska Airlines. According to our data, you can fly for as low as $148. Users have also found prices from $158 and $173 on Delta and American Airlines, respectively.
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, May is the cheapest month in which you can book a flight from Kalispell to Boston (average of $248). Flying from Kalispell to Boston in March is currently the most expensive (average of $404). 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.

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Top 4 airlines flying from Kalispell to Boston

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$302	Average$509	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$388	Average$574	FlexibilityNo cancel fee	On-time69%
Alaska Airlines	Cheapest$397	Average$689	FlexibilityNo cancel fee	On-time75%
American Airlines	Cheapest$405	Average$649	FlexibilityNo cancel fee	On-time71%

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$149+ 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 1/8. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Kalispell to Boston with Cheapflights

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Cheap flight deals from Kalispell to Boston

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 December 12, 2025.

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 December 12, 2025.

Find flight deals from Kalispell to Boston

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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

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 December.

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.

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?

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

Reviews of airlines servicing Boston

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.

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?

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

What are the cheapest airlines to fly from Kalispell to Boston one-way?

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

How can I find direct flights from Kalispell to Boston?

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

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

Traveling to a place near Boston?

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Alternative routes for Kalispell to Boston

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Top 4 airlines flying from Kalispell to Boston

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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 December 12, 2025.