FCA - BOS

$179 Find Cheap Flights from Kalispell to Boston

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Kalispell to Boston departing on 5/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Boston

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Kalispell to Boston, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Kalispell to Boston, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$357
Typical prices: $664-$467
Alaska Airlines
Tue 6/2Fri 6/5
FCA - BOS • 1 stop
Cheapest one-way
$179
Typical prices: $363-$403
Delta
Sun 5/10
FCA - BOS • 1 stop
Top airlines
Cheapest • from $357 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Kalispell and Boston. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $480 (round-trip)
Shortest trip • 7h 19m (one-way)
Insights
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Boston!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Kalispell to Boston (FCA-BOS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Kalispell to Boston that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Kalispell to Boston

Tue, Jun 2 - Fri, Jun 5
Alaska Airlines Logo
6:15 am - 6:11 pm
FCA
-
BOS
9h 56m
1 stop
Alaska Airlines Logo
7:11 pm - 10:51 am
BOS
-
FCA
17h 40m
1 stop
$357Alaska Airlines
Tue, Jun 2 - Fri, Jun 5
American Airlines Logo
12:25 pm - 12:40 am
FCA
-
BOS
10h 15m
2 stops
American Airlines Logo
7:00 am - 3:00 pm
BOS
-
FCA
10h 00m
1 stop
$362American Airlines
Thu, May 28 - Tue, Jun 2
Delta Logo
12:20 pm - 1:28 am
FCA
-
BOS
11h 08m
2 stops
Delta Logo
12:05 pm - 11:14 pm
BOS
-
FCA
13h 09m
2 stops
$368Delta
Mon, May 4 - Fri, May 8
Alaska Airlines Logo
7:28 pm - 7:12 am
FCA
-
BOS
9h 44m
1 stop
Alaska Airlines Logo
6:42 pm - 12:11 pm
BOS
-
FCA
19h 29m
1 stop
$389Alaska Airlines
Mon, May 4 - Thu, May 7
Delta Logo
6:10 pm - 6:00 am
FCA
-
BOS
9h 50m
1 stop
Delta Logo
8:50 am - 5:27 pm
BOS
-
FCA
10h 37m
2 stops
$394Delta
Tue, May 5 - Sat, May 9
Delta Logo
5:05 am - 8:15 pm
FCA
-
BOS
13h 10m
2 stops
Delta Logo
12:05 pm - 11:14 pm
BOS
-
FCA
13h 09m
2 stops
$399Delta
Tue, Sep 22 - Sat, Oct 3
Alaska Airlines Logo
6:08 pm - 7:39 am
FCA
-
BOS
11h 31m
1 stop
Alaska Airlines Logo
10:00 am - 1:20 pm
BOS
-
FCA
29h 20m
1 stop
$403Alaska Airlines
Tue, Sep 22 - Sat, Oct 3
American Airlines Logo
1:25 pm - 11:54 pm
FCA
-
BOS
8h 29m
1 stop
American Airlines Logo
6:00 am - 2:40 pm
BOS
-
FCA
10h 40m
1 stop
$408American Airlines
Tue, Sep 22 - Sat, Oct 3
American Airlines Logo
1:25 pm - 11:54 pm
FCA
-
BOS
8h 29m
1 stop
American Airlines Logo
6:30 am - 3:56 pm
BOS
-
FCA
11h 26m
2 stops
$413American Airlines
Mon, May 4 - Thu, May 7
Alaska Airlines Logo
7:28 pm - 7:12 am
FCA
-
BOS
9h 44m
1 stop
Alaska Airlines Logo
7:00 am - 6:48 pm
BOS
-
FCA
13h 48m
1 stop
$419Alaska Airlines
Booking Insights

KAYAK's insights & trends for Kalispell to Boston flights

Get data-powered insights and trends into flights from Kalispell to Boston to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Kalispell to Boston?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Kalispell to Boston departing in June.

Good to know

Low seasonDecember
Cheapest flight$179
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly with an average 11% increase in price.
Flight from Kalispell to Boston

When to book flights from Kalispell to Boston

Are your dates flexible? Find out the best times to travel from Kalispell to Boston based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Kalispell to Boston

  • What is the cheapest flight from Kalispell to Boston?

    In the last 3 days, the lowest price for a flight from Kalispell to Boston was $179 for a one-way ticket and $357 for a round-trip.

  • Do I need a passport to fly between Kalispell and Boston?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which aircraft models fly most regularly from Kalispell to Boston?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Kalispell to Boston?

    SkyTeam, and Star Alliance are the airline alliances operating flights between Kalispell and Boston, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Kalispell to Boston, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Kalispell to Boston are Delta and United Airlines. With an average price for the route of $504 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $563 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Kalispell to Boston?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Kalispell to Boston.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Kalispell to Boston?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boston from Kalispell is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Kalispell to Boston?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Boston with an airline and back to Kalispell with another airline. Booking your flights between Kalispell and BOS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Kalispell to Boston?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Boston from Kalispell up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Kalispell to Boston

 
See real verified KAYAK customer reviews for airlines flying from Kalispell to Boston. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Kalispell to Boston? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8438 reviews
8.1Boarding
8.5Crew
7.9Comfort
7.2Food
7.8Entertainment
Airline reviews

This wasn't my experience with Delta. It was just the Pegasus flight. Seats were very hard. Staff was kinda rough. Not very nice. Charged me for snacks. For a 4 hour flight I would've expected more.

4.0 OkayAnonymous, Apr 2026
MYR - ATL
Read more Delta reviews

This wasn't my experience with Delta. It was just the Pegasus flight. Seats were very hard. Staff was kinda rough. Not very nice. Charged me for snacks. For a 4 hour flight I would've expected more.

Crew was nice, meal was good. Entertainment had to be rebooted 3 times and still did not work. Turns out there was residue on screen, it needed to be cleaned to prevent the touchscreen buttons from continuously activating. I had entertainment for the last 45 minutes of a 5 hour 45 minute flight. Really unacceptable for first class. Flight attendent indicated your cleaning solution creates this problem. Seems as if this is widely known, you should be using a different product or cleaning better. Really really disappointing which simply added to the wi fi on your planes with reliably never ever works.

The baggage belt was not updated on the Delta App and was displayed on the wrong belt board. Was not expecting this to happen.

The plan was delayed and left DC 90 minutes late. However, it showed a 20 minute delay on the delta app, then a 12 min delay. It turned out to be an hour delay. I found out where the plane was with flightaware. Stop keeping customers in the dark about what is going on.

Everything went smoothly, although the usual gripes about airline travel were still present: the boarding process is inefficient, the snack selection is limited, and so on. Since there was extra space on the flight, the gate agent rearranged many people's seats to put people on the aisles and windows, leaving the middle seats empty, as much as possible, which was pretty great.

Landed without a gate ready. Plane is extremely old and dirty.

All the amenities was wonderful, if they could keep their prices that low. I'd fly with them all the time.

Very old plane with no inflight entertainment. I purchased the internet pass and it was nearly unusable.

My tray was broken so i had no place to work or eat except my lap. Flight attendant said I would get an email with some credit or miles, it was a complete waste of time as I could only function at about 20% of normal. I have not received anything yet.

Short trip, no food and therefore no expectation for much interaction with staff who were pleasant and professional. My critique is on comfort of the seats. Exit rows and comfort seats do not provide enough personal space for 3 side-by-side seats, especially when in the middle row. Some passengers are not considerate of the middle seat and there should be signs that state something to the effect of: "please consider giving middle seats use of the armrests."

They told us yesterday APR21st that they were cleaning the plane and we got delayed. After that they said they didn't had any crew for the flight so they cancelled the flight till next day.

The crew was great. Very friendly and responsive. The plane was old, small and tight. We ran out of overhead space and I had to check. Middle seat was particularly tight.

The flight crew on this leg of my trip was very friendly and pleasant. Every one of them was humorous, as well as helpful and accommodating. This group was BY FAR the best crew I’ve flown with. They deserve kudos.

boarded early to only find out that flight would sit at gate for 45 min to an hour. Landed in chicago and sat on runway for over an hour before got to gate. Total delay was extensive for a 45 min flight door to door.

The flight was delayed from take off because only one runway was operational in San Francisco.

Several missed and almost missed connections. It felt like everything was being patched together last minute without enough resources and it ended up being an extremely stressful experience that basically ruined our weekend on the west coast. What a waste.

Really hard landing... as in slammed into the runway then hit the brakes really hard ...

The flight was significantly delayed. The inbound flight from EWR was delayed departing because of mechanical problems. My original departure from CLT was 5:28 pm but due to the delay of the inbound flight, after arrival, deplaning, cleaning, boarding, we did not push back from the gate until 9:00 pm. Once in the air, the flight was smooth and what was originally supposed to be an arrival in ORD at 7:30 pm local time turned out to be 9:35 pm.

My bags were misplaced!!! Im in a foreign country with no bags

The entertainment options on the seat back video boards were nice.

Everything you need to know for your flight from Kalispell to Boston

Information on your arrival and departure airports