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 $317 on this airline. Additional options worth looking into are Hawaiian Airlines and Alaska Airlines, starting at $358 and $414 round-trip. American Airlines is 41% 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 Delta. According to our data, you can fly for as low as $164. Users have also found prices from $240 and $244 on American Airlines and United Airlines, respectively.

What is the cheapest day to fly from Kalispell to Boston?

Travelers seeking maximum savings on their Kalispell to Boston flight should consider departing on Friday at noon when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 American Airlines, Alaska Airlines or Delta as they are the most popular for this route.

What is the cheapest day to fly round-trip from Kalispell to Boston?

Users have found that flying from Kalispell to Boston on a Saturday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

How far in advance should I book a flight from Kalispell to Boston?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 51 days in advance, which can save you up to 116% on flights from Kalispell to Boston compared to booking the week you need them. Waiting 51 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $509. For sooner than that we have options available in the next 3 days from $1,042.

What is the cheapest month to fly from Kalispell to Boston?

January is one of the best times of the year to fly to Boston from Kalispell. Prices for January average $543 per person but you can even find prices for as low as $344. The most expensive prices can be found in the month of July. Opting for a January flight can save you 40% on your journey compared to booking in July

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.

$164+ Flights from Kalispell to Boston

Q: How much does it cost to fly round-trip from Kalispell to Boston?

Airfare is below average for this route at the moment. Kalispell to Boston flights typically cost between $458 and $664 in September. The cheapest round-trip price found within the last 3 days was $317 on American Airlines (Sep 4-Sep 7).

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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.

Cheapflights Tip: The best prices from Kalispell Glacier Park to Boston Logan Intl are usually found in January or April, booked 73 days in advance, depart on a Monday or Saturday and return on a Tuesday

Cheap flight deals from Kalispell to Boston

Round-trip from	$317 (American Airlines)
One-way from	$164 (Delta)
Popular in	July
Cheapest in	January
Average price	$760

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. 11% potential increase in price ($68 potential increase over avg. RT price).

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

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Average for round-trip flights in July 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 July 29, 2025.

Thu 9/41:27 pmFCA - BOS

1 stop7h 13mAmerican Airlines

Sun 9/75:00 amBOS - FCA

1 stop13h 13mAmerican Airlines

Deal found 7/27

$317

Wed 9/178:02 pmFCA - BOS

1 stop9h 58mHawaiian Airlines

Tue 9/239:20 amBOS - FCA

1 stop8h 22mHawaiian Airlines

Deal found 7/28

$358

Thu 9/45:33 pmFCA - BOS

2 stops15h 40mMultiple Airlines

Sun 9/76:20 amBOS - FCA

2 stops12h 23mMultiple Airlines

Deal found 7/27

$372

Tue 11/256:12 pmFCA - BOS

1 stop9h 57mDelta

Tue 12/25:40 amBOS - FCA

1 stop10h 10mDelta

Deal found 7/28

$395

Fri 10/171:07 pmFCA - BOS

2 stops32h 52mAlaska Airlines

Tue 10/218:01 amBOS - FCA

2 stops17h 57mAlaska Airlines

Deal found 7/28

$414

Wed 9/36:30 amFCA - BOS

2 stops10h 25mUnited Airlines

Sun 9/76:10 amBOS - FCA

1 stop7h 25mUnited Airlines

Deal found 7/27

$479

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 July 29, 2025.

Thu 9/41:27 pmFCA - BOS

1 stop7h 13mAmerican Airlines

Sun 9/75:00 amBOS - FCA

1 stop13h 13mAmerican Airlines

Deal found 7/27

$317

Wed 9/178:02 pmFCA - BOS

1 stop9h 58mHawaiian Airlines

Tue 9/239:20 amBOS - FCA

1 stop8h 22mHawaiian Airlines

Deal found 7/28

$358

Thu 9/45:33 pmFCA - BOS

2 stops15h 40mMultiple Airlines

Sun 9/76:20 amBOS - FCA

2 stops12h 23mMultiple Airlines

Deal found 7/27

$372

Fri 10/171:07 pmFCA - BOS

2 stops32h 52mAlaska Airlines

Tue 10/218:01 amBOS - FCA

2 stops17h 57mAlaska Airlines

Deal found 7/28

$414

Wed 9/36:30 amFCA - BOS

2 stops10h 25mUnited Airlines

Sun 9/76:10 amBOS - FCA

1 stop7h 25mUnited Airlines

Deal found 7/27

$479

Mon 8/112:55 pmFCA - BOS

1 stop7h 22mDelta

Fri 8/152:30 pmBOS - FCA

2 stops11h 21mDelta

Deal found 7/27

$730

Last-minute flights from Kalispell to Boston
Discover last-minute flight deals from Kalispell to Boston. Data last updated July 29, 2025 and is based on user searches.

Tue 8/55:14 pmFCA - BOS

2 stops15h 43mUnited Airlines

Tue 8/126:07 amBOS - FCA

1 stop7h 29mUnited Airlines

Deal found 7/29

$546

Thu 8/74:57 pmFCA - BOS

1 stop14h 46mAmerican Airlines

Mon 8/117:00 amBOS - FCA

2 stops11h 14mAmerican Airlines

Deal found 7/27

$613

Thu 8/76:50 amFCA - BOS

2 stops13h 18mDelta

Mon 8/114:45 pmBOS - FCA

2 stops9h 40mDelta

Deal found 7/27

$780

Mon 8/112:55 pmFCA - BOS

1 stop7h 22mDelta

Fri 8/152:30 pmBOS - FCA

2 stops11h 21mDelta

Deal found 7/27

$730

Wed 8/132:03 pmFCA - BOS

2 stops13h 58mUnited Airlines

Tue 8/196:02 amBOS - FCA

1 stop11h 26mUnited Airlines

Deal found 7/29

$489

Wed 8/131:25 pmFCA - BOS

1 stop7h 17mAmerican Airlines

Tue 8/198:08 amBOS - FCA

1 stop8h 31mAmerican Airlines

Deal found 7/29

$541

Sat 8/1610:25 amFCA - BOS

3 stops34h 09mMultiple Airlines

Fri 8/226:05 amBOS - FCA

3 stops29h 16mMultiple Airlines

Deal found 7/28

$614

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 July 29, 2025.

Tue 8/265:20 amFCA - BOS

2 stops11h 34mDelta

Deal found 7/28

$164

Sun 8/249:30 pmFCA - BOS

2 stops35h 48mMultiple Airlines

Deal found 7/28

$200

Tue 8/1911:53 amFCA - BOS

1 stop9h 23mAmerican Airlines

Deal found 7/28

$240

Thu 8/2112:41 pmFCA - BOS

1 stop6h 47mUnited Airlines

Deal found 7/27

$244

Mon 9/228:02 pmFCA - BOS

1 stop9h 58mAlaska Airlines

Deal found 7/28

$247

Sat 8/98:00 pmFCA - BOS

1 stop10h 00mHawaiian Airlines

Deal found 7/29

$472

Fly from

Fly to

Route

Depart

Return

Price

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Thu 9/4

1:27 pm-10:40 pm

1 stop7h 13m

Boston Logan Intl

Sun 9/7

5:00 am-4:13 pm

1 stop13h 13m

$317

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Wed 9/17

8:02 pm-8:00 am

1 stop9h 58m

Boston Logan Intl

Tue 9/23

9:20 am-3:42 pm

1 stop8h 22m

$358

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Thu 9/4

5:33 pm-11:13 am

2 stops15h 40m

Boston Logan Intl

Sun 9/7

6:20 am-4:43 pm

2 stops12h 23m

$372

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Fri 10/17

1:07 pm-11:59 pm

2 stops32h 52m

Boston Logan Intl

Tue 10/21

8:01 am-11:58 pm

2 stops17h 57m

$414

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Wed 9/3

6:30 am-6:55 pm

2 stops10h 25m

Boston Logan Intl

Sun 9/7

6:10 am-11:35 am

1 stop7h 25m

$479

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Mon 8/11

2:55 pm-12:17 am

1 stop7h 22m

Boston Logan Intl

Fri 8/15

2:30 pm-11:51 pm

2 stops11h 21m

$730

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Tue 8/26

5:20 am-6:54 pm

2 stops11h 34m

$164

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Sun 8/24

9:30 pm-11:18 am

2 stops35h 48m

$200

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Tue 8/19

11:53 am-11:16 pm

1 stop9h 23m

$240

KalispellBoston

FCA - BOS

FCABOS

Kalispell Glacier Park

Thu 8/21

12:41 pm-9:28 pm

1 stop6h 47m

$244

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 12 results

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

How far ahead should I book a flight from Kalispell to Boston?

The price you pay for your flight from Kalispell to Boston may vary depending on when you book. For the best chance of a lower fare, look to book 70 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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?

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.

How much does it cost to fly round-trip from Kalispell to Boston?

Reviews of airlines servicing Boston

Peruse reviews from past customers who have flown with Alaska Airlines, Delta, and Hawaiian 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

Reviews

1 / 20

10.0

Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Alaska Airlines

8.0

Very good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Delta

8.0

Very good

7,979 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Hawaiian Airlines

7.8

Good

2,605 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

United Airlines

7.4

Good

8,896 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Related info for your journey

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 $317 on this airline. Additional options worth looking into are Hawaiian Airlines and Alaska Airlines, starting at $358 and $414 round-trip. American Airlines is 41% 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 Delta. According to our data, you can fly for as low as $164. Users have also found prices from $240 and $244 on American Airlines and United 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, 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.

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Top 4 airlines flying from Kalispell to Boston

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$276	Average$614	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$306	Average$497	FlexibilityNo cancel fee	On-timeN/A
Alaska Airlines	Cheapest$397	Average$660	FlexibilityNo cancel fee	On-time75%
United Airlines	Cheapest$428	Average$636	FlexibilityNo cancel fee	On-time69%

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$164+ 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 8/26. 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

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Kalispell Glacier Park to Boston Logan Intl are usually found in January or April, booked 73 days in advance, depart on a Monday or Saturday and return on a Tuesday

Cheap flight deals from Kalispell to Boston

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find 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 July 29, 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 July 29, 2025.

Cheapflights Fare Finder

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

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

How far ahead should I book a flight from Kalispell to Boston?

Use this chart to determine the optimal time to book a round-trip flight from Kalispell to Boston. Price data was last updated on July 25, 2025.

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?

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 July 29, 2025.

How much does it cost to fly round-trip 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 July 29, 2025.

Peruse reviews from past customers who have flown with Alaska Airlines, Delta, and Hawaiian 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.

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 July 29, 2025.