BOS - FCA

$149 Find Cheap Flights from Boston to Kalispell

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Kalispell departing on 5/12. 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 Kalispell

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

Cheapest round-trip
$297
Overall average: $416
Delta
Tue 4/7Tue 4/14
BOS - FCA • 1 stop
Cheapest one-way
$149
Typical prices: $249-$408
Delta
Tue 5/12
BOS - FCA • 1 stop
Top airlines
Delta
Cheapest • from $297 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 33% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
November
Cheapest • 30% price drop
August
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Kalispell!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boston to Kalispell (BOS-FCA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to Kalispell 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 Boston to Kalispell

Tue, Apr 7 - Tue, Apr 14
Delta Logo
5:50 am - 1:28 pm
BOS
-
FCA
9h 38m
1 stop
Delta Logo
6:10 pm - 6:00 am
FCA
-
BOS
9h 50m
1 stop
$297Delta
Tue, Apr 7 - Tue, Apr 14
Delta Logo
5:50 am - 1:28 pm
BOS
-
FCA
9h 38m
1 stop
Delta Logo
6:10 pm - 6:00 am
FCA
-
BOS
9h 50m
1 stop
$307Delta
Tue, Apr 7 - Tue, Apr 14
United Airlines Logo
11:00 am - 9:27 pm
BOS
-
FCA
12h 27m
2 stops
United Airlines Logo
2:33 pm - 11:59 pm
FCA
-
BOS
7h 26m
1 stop
$356United Airlines
Tue, Jun 9 - Tue, Jun 16
United Airlines Logo
6:00 am - 3:17 pm
BOS
-
FCA
11h 17m
1 stop
United Airlines Logo
12:35 pm - 11:16 pm
FCA
-
BOS
8h 41m
1 stop
$379United Airlines
Tue, Apr 7 - Tue, Apr 14
Delta Logo
8:05 am - 5:15 pm
BOS
-
FCA
11h 10m
2 stops
Delta Logo
2:49 pm - 11:40 pm
FCA
-
BOS
6h 51m
1 stop
$380Delta
Tue, Jun 9 - Tue, Jun 16
American Airlines Logo
5:05 am - 12:35 pm
BOS
-
FCA
9h 30m
1 stop
American Airlines Logo
1:25 pm - 11:59 pm
FCA
-
BOS
8h 34m
1 stop
$384American Airlines
Sat, May 16 - Sat, May 23
Alaska Airlines Logo
7:08 pm - 10:32 am
BOS
-
FCA
17h 24m
1 stop
Alaska Airlines Logo
5:40 pm - 7:41 am
FCA
-
BOS
12h 01m
1 stop
$387Alaska Airlines
Tue, Apr 7 - Tue, Apr 14
Delta Logo
5:50 am - 1:28 pm
BOS
-
FCA
9h 38m
1 stop
Delta Logo
12:10 pm - 11:52 pm
FCA
-
BOS
9h 42m
2 stops
$388Delta
Tue, Apr 7 - Tue, Apr 14
Delta Logo
5:30 am - 1:28 pm
BOS
-
FCA
9h 58m
2 stops
Delta Logo
2:49 pm - 11:40 pm
FCA
-
BOS
6h 51m
1 stop
$390Delta
Thu, Jun 11 - Wed, Jun 17
Delta Logo
2:30 pm - 11:46 pm
BOS
-
FCA
11h 16m
2 stops
Delta Logo
3:00 pm - 11:52 pm
FCA
-
BOS
6h 52m
1 stop
$394Delta
Booking Insights

KAYAK's insights & trends for Boston to Kalispell flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to Kalispell, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boston to Kalispell is November, where tickets cost $410 (return) on average. On the other hand, the most expensive months are December and February, where the average cost of round-trip tickets is $1,034 and $706 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boston to Kalispell, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Boston to Kalispell, you should book around 3 weeks before departure, which saves you about 33% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

Good to know

Low seasonOctober
Cheapest flight$149
Best time to beat the crowds with an average 29% drop in price.
Most popular time to fly and prices are also 9% lower on average.
Flight from Boston to Kalispell

When to book flights from Boston to Kalispell

Are your dates flexible? Find out the best times to travel from Boston to Kalispell 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 Boston to Kalispell

  • Can I change or cancel my flight from Boston to Kalispell after booking?

    All domestic flights within the US have a 24-hour window from the time of original booking. During this time, you can change or cancel the flight with no penalty. After this 24-hour period, additional fees may apply for itinerary changes. Delta gives a refundable ticket option for each of their cabins, which includes free changes and is refundable. United Airlines also offers their Economy Flex fare for free changes.

  • Do I have to pay extra for bags on this flight?

    Baggage fees are determined by the airline and will also depend on the ticket type you choose. On Delta flights, all passengers can bring a personal item (that can fit under the seas) and a carry-on free of charge. Fees will be charged for any checked baggage unless you decide to upgrade to the First-Class cabin, which includes two checked bags. The Basic Economy fare on United does not include a carry-on bag and must be paid for along with any checked bags. Pay online for checked bags to get a discount and make the check-in process easier.

  • Can my child travel alone from Boston to Kalispell?

    Kids aged 5 to 14 can travel alone on United and Delta Air Lines through their Unaccompanied Minor programs. With this service, they will receive an escort through the airport upon arrival, as well as special snacks and entertainment during the flight. Parents are given a special pass that permits them to take their child up to the boarding gate. They will even be given a barcoded wristband which allows parents to track their journey.

  • How can I get from Kalispell Airport to Glacier National Park?

    Kalispell Airport is the nearest one to the West Entrance of Glacier National Park. From the airport, you can take a shuttle to the Whitefish Amtrak Station. Glacier Park operates these shuttles, and they leave every 15 minutes. Once at the station, take the train to West Glacier, where the park entrance is located. Car rental companies like Avis and Hertz are available at the airport to give you the most flexibility during your trip. Check KAYAK for some of the best rental rates.

  • What is the cheapest flight from Boston to Kalispell?

    In the last 3 days, the lowest price for a flight from Boston to Kalispell was $149 for a one-way ticket and $297 for a round-trip.

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

    No

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

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

  • Which airline alliances offer flights from Boston to Kalispell?

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

  • What is the most popular layover when flying to Kalispell from Boston?

    Chicago is the most popular layover city among KAYAK users traveling from Boston to Kalispell.

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

    The two airlines most popular with KAYAK users for flights from Boston to Kalispell are Alaska Airlines and Delta. With an average price for the route of $619 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $557 and an overall rating of 7.9.

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

    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 Boston to Kalispell.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Kalispell from Boston 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 Boston to Kalispell?

    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 Kalispell with an airline and back to Boston with another airline. Booking your flights between Boston and FCA 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 Boston to Kalispell?

    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 Kalispell from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Boston to Kalispell

  • There are no direct flights along this route from Boston (BOS) to Kalispell (FCA), but most of them will have only one stop. Your flight might have a layover in Chicago (ORD), Seattle (SEA), Minneapolis (MSP), or Denver (DEN).
  • When you upgrade your Alaska Airlines flight from the Saver to the Main fare, you will have the freedom to choose your seat and change or cancel your flight. The Premium Class seats add 4 inches of legroom and complimentary cocktails during the flight.
  • Some Alaska Airlines flights will have a long layover of over 4 hours in Seattle (SEA). During the layover, you can relax in the Seattle D Concourse Lounge with complimentary food and drinks. You may purchase a day pass or have it included with a Business Class ticket.
  • If you need more time to think before booking your flight, United offers FareLock. For a small fee, you can lock in the price of a flight for up to 14 days.
  • Join Delta SkyMiles rewards program to stay connected during your flight. They now have free Wi-Fi available on most domestic flights.

Reviews of the top 5 airlines serving from Boston to Kalispell

 
See real verified KAYAK customer reviews for airlines flying from Boston to Kalispell. 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 Boston to Kalispell? 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.
8.0
Alaska AirlinesOverall score based on 11874 reviews
7.1Food
8.1Boarding
7.8Comfort
8.5Crew
7.0Entertainment
Airline reviews

Larger seats with a bit more room would be good! Thanks for all your hard work. I think we are all feeling a bit down these days economically and your positive attitudes, both from SJC to Seattle and from Seattle to Bozeman makes more of a difference than you can see! Thank you and Merry Christmas! I hope all your financial needs are met and that very good things come your way.

10.0 ExcellentAnonymous, Dec 2025
SEA - BZN
Read more Alaska Airlines reviews

Larger seats with a bit more room would be good! Thanks for all your hard work. I think we are all feeling a bit down these days economically and your positive attitudes, both from SJC to Seattle and from Seattle to Bozeman makes more of a difference than you can see! Thank you and Merry Christmas! I hope all your financial needs are met and that very good things come your way.

Food was bad. Just a drink for a 5 hour flight

Leg and arm room are horrible. I am not a big person and found it tight.

I purchased a 1st class ticket and unfortunately the main flight attendant was not the best and seemed more interested in her phone than the passengers at times. Then the plane didn’t get restocked and the only snacks for this flight were pretzels. However I would like to say that the rest of the flight crew and ground crew at the airport we’re great, especially the people that wheeled me around the airport some and then the one getting me to the plane and the automated wheelchair that wheeled me through the airport.

Late. Too long a flight for a 737. 0.5 oz of pretzels for a 5+ hour flight at dinner time. One step above Ryan Air/ several below Delta.

The plane boarded late and arrived late which wasn't really ideal.

My seat. The reprentative on the phone was bad. The passengers screamed at each other and no one stopped them. The directions boarding the plane were unclear. There was a medical incident and the ICU nurse present said the women was having a cardic incident. Cooler heads determined it was a UTI. I had a allergy attack and a guy got a mask from the flight attendent and told me to wear it. He "had kidney failure". Why didnt they tell him to wear the mask, why was he even on the plane? It was embarrassing, he said hurtful things. By the way, I have a degree in Medical Micrbiology from Northwestern Medical school. MT(ASCP). Look it up. I Know the difference between allergies and an infection. But we had to listen to the unstable screaming man.

Wouldve liked a meal option (that you didnt have to prepay for) for such a long flight. But otherwise staff was friendly and boarding/un boarding was as efficient as it could be

Flight was delayed as it always is with Alaska airlines. Particularly to smaller airports. No AC on the plane so it was miserably hot.

It was a good experience! Thank you:) No sparkling mineral water… 🥲

Was forced to check in my small carry on, even though I informed the crew it has very fragile items inside

This was one of the worst flights I’ve been on in years. I upgraded to comfort and had such an uncomfortable experience. The person next to me was oversized - which I understand - however, they took up their space and mine. I could only use about 50% of my seat space to not be physically touching this person the entire flight and there was no spatial awareness. I also could not use the seat outlet because their body was obstructing it. It was very inconvenient. Their body kept touching me repeatedly during the flight and I felt very uncomfortable. To pay more for an upgraded space and then not even being able to use it was highly disappointing.

No wheel chair as requested at Atlanta arrival on first flight.

Only freetext wifi was available in flight; browsing WiFi required payment. Since the seats had no in flight entertainment, Delta should revisit this policy on this longer flight.

Only water, tea or coffee served midflight, even to comfort seating. Man next to me needed two seats and took up a portion of my seat and Delta did nothing.

The flight was great as well as the airline staff

First class and monitors weren’t working for mine & my husbands. Eventually fixed, but quite annoyed as we bought first class. Also, No foot rests.

Prior to takeoff, the pilot told us there was a possibility of not being able to land and going to Portland. Well that happened, we took off and then did 8 loops around Spokane before the pilot told us we ran out of fuel and had to go to Portland. So for a 35 minute flight we have now been on the plane for 3 hours (boarded at 6:50 am and landed in Portland at 10:30). Then, we just sat in Portland's airport with no updates of when we can start heading back. All of a sudden, our pilots and crew just left, leaving us stranded in a different city and state. We continued to sit in Portland until we finally got a new crew assigned and boarded the plane (This was from 10:30-2). We then sat on the plane for an additional hour before take off because they had to count us multiple times. We finally landed in Spokane at 3:55 PM. So a flight that should have taken at max an hour took us 10 hours and we missed the majority of the recruiting event we went for.

It was delayed but other than that it was great.

Got on the plane and sat there for an hour before departure.

No charging outlets worked. Other than collecting trash attendants didn’t come around. No one could hear flight attendants announcements during the flight. Seat pads were horrible. Sitting on a board for 5 hours. What happened to Hawaiian airlines comfort, hospitality, and extras? Our pilots did an excellent job trying to minimize turbulence and incredible job in landing in windy conditions.

I like that if they asked you to checked in a bag at the gate they give you priority to board

Horrible food and crew. Crew were laughing and talking loud while people were trying to sleep

Yall need to integrate your system with Alaska more efficiently. They booted me off the first flight because of a discrepancy on your end.

The crew at Hawaiian Airlines was fantastic. Kind and hard working. The pilots were great with giving us all the updates to make sure we were informed.

Very good. Nice plane and we sat in economy plus - bigger seats, more room. They served a meal and snacks, and the meal was an apple stuffed pancake that was very good! The snack for us was a hummus sandwich - also very good. The flight attendants were helpful and nice. They have plenty of movies and shows to watch. My only negative -- they changed our flights around and did not adjust the layovers, so we ended up with a very long and unnecessary layover in Honolulu.

I liked the Starlink WiFi but didn't like how they said they were the only airline to offer a free meal and it turns out to be just a standalone sandwich and then charge for snacks to go with it. Rather have the free snacks like Southwest, but have the option to purchase a decent meal for a 5+ hour flight.

Flight scheduled to take off at 5.55pm but it did not take off until 7pm due to some food delivery delay.

Unfortunately, I was put into the middle seat in the first row of premium seating. Sounds nice right? No! that is the worst seat in the plane. I wish I was in economy rather than be in that seat! There is no seat back pocket, no tray table, no charger. Nothing! so unless you're row mates are willing to let you share their basic amenities any flyer should have, you are stuck. It was the worst experience ever! And the flight attendant forgot to take my drink order. I felt like the forgotten flyer.

Delayed and cancelled flights were hard and very stressful, both ways!

Everything was on time Will use united again for sure

Plane outlets in my row not working to charge phone. Staff response was, well it should be. Plug into seed for volume not working well. Had to find the sweet spot for plug in or it would shut off and on.

Fine not above and beyond as I had a connection that was delayed due to maintenance

The power at the seat didn't work and the seat itself was difficult to adjust - this was a business class seat. Flight attendant gave me miles to compensate. The attendant was very professional and on top of his game the entire flight.

I upgraded my seat and was promised it would be next to the emergency door for extra leg room and they said it was premium plus but it was at the back of the plane...same thing happened from Newark to Dubai

Everything except the food and entertainment. It was a great experience though

Bad food, bad service, cold cabin with no additional blankets when asked for (they told me they don’t provide additional blankets). I’m a frequent traveler and this is one of the worst companies I traveled with (by the way I thought that I booked my ticket with Lufthansa but I didn’t see that the flights were handled by United).

United Airlines is my preferred airlines and I am thankful for Gary who also help support me on the phone to switch my flight literally last min.

Not being stranded in Chicago for her airport to 11:30 tomorrow morning the 3rd

the whole trip was smooth, and as comfortable as flying is these days. flight crew was friendly and very courteous and helpful.

The flight was on time/early, attentive crew, and everything overall went smoothly. Disappointed that WIFI was not working for the flight.

One day, I do so hope for a gluten free snack! Seems like with the rest of the world FINALLY figuring out what gluten free is, American Airlines would too. Fingers crossed!!

The flight was significantly delayed for 6.5 hours because of snow. There was no communication once the plane returned to the gate regarding when the flight would resume. Other flights were departing while our flight was being unloaded for reasons unknown. Our flight also seemed out of the queue regarding further deicing, refueling, and waiting to Taxi to the runway.

Flight was on time and the meal and service were good.

Flight was delayed for 2 hours, then last minute the change to on time. The satélite location is far and a nightmare to get to.

This was a horrible experience. I’ve experienced several delays at this point and still not home. I was supposed to be home by 8:30 last night and here I sit at 7 am on a plane STILL unable to go home because of American Airlines.

Generally good. Flight left on time and the seats are comfortable. Plenty of space in front if you in you choose a comfort plus seat, completely worth spending the extra money given the amount of hours the flight lasts. The food tastes good but I would say it’s a the amount is too little. The crew was friendly and efficient. There was a some turbulence at different points into the flight. American Airlines has good deals to NZ if you book with plenty of time before you plan on going.

the plane was so hot!! the air-conditioning was barely blowing. The flight was delayed, and we had to sit on the hot plane before take off for an extended amount of time, waiting on international passengers. Would not have been so bad if it was not so hot. They said it would get better after take off, but it did not.

They are always late and seats was also not having working charger

We flew in first class. The crew did not offer drinks before the flight took off, but they treated us well during the flight. The food was excellent. There was actually too much food served, but it was nice to have all the options.

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

Information on your arrival and departure airports