BOS - FCA

$182 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 11/23. 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
$296
Overall average: $404
Alaska Airlines
Fri 1/16Fri 1/23
BOS - FCA • 1 stop
Cheapest one-way
$149
Typical prices: $229-$404
Multiple Airlines
Sun 11/23
BOS - FCA • 2 stops
Top airlines
Alaska Airlines
Cheapest • from $296 (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 29% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 32% price drop
August
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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

Fri, Jan 16 - Fri, Jan 23
Alaska Airlines Logo
6:44 pm - 12:14 pmBOS-FCA
19h 30m1 stop
Alaska Airlines Logo
1:54 pm - 11:54 pmFCA-BOS
8h 00m1 stop
$296Alaska Airlines
Find Deal
Tue, Apr 7 - Tue, Apr 14
Delta Logo
5:40 am - 1:51 pmBOS-FCA
10h 11m1 stop
Delta Logo
3:00 pm - 11:52 pmFCA-BOS
6h 52m1 stop
$297Delta
Find Deal
Tue, Apr 7 - Tue, Apr 14
Delta Logo
5:40 am - 1:51 pmBOS-FCA
10h 11m1 stop
Delta Logo
5:25 am - 5:19 pmFCA-BOS
9h 54m2 stops
$302Delta
Find Deal
Wed, Dec 10 - Sat, Dec 13
Delta Logo
2:55 pm - 11:10 pmBOS-FCA
10h 15m2 stops
Delta Logo
5:00 am - 7:42 pmFCA-BOS
12h 42m2 stops
$307Delta
Find Deal
Wed, Dec 10 - Sat, Dec 13
Delta Logo
8:05 am - 1:56 pmBOS-FCA
7h 51m1 stop
Delta Logo
6:06 pm - 6:20 amFCA-BOS
10h 14m1 stop
$323Delta
Find Deal
Sat, May 9 - Sat, May 16
Delta Logo
12:55 pm - 11:02 pmBOS-FCA
12h 07m2 stops
Delta Logo
3:00 pm - 11:52 pmFCA-BOS
6h 52m1 stop
$328Delta
Find Deal
Fri, Jan 9 - Fri, Jan 16
Alaska Airlines Logo
6:44 pm - 12:14 pmBOS-FCA
19h 30m1 stop
Alaska Airlines Logo
1:54 pm - 11:54 pmFCA-BOS
8h 00m1 stop
$346Alaska Airlines
Find Deal
Wed, Jan 21 - Wed, Jan 28
Delta Logo
4:20 pm - 10:54 pmBOS-FCA
8h 34m1 stop
Delta Logo
5:54 pm - 10:02 amFCA-BOS
14h 08m2 stops
$353Delta
Find Deal
Tue, Apr 7 - Tue, Apr 14
Delta Logo
5:30 am - 1:51 pmBOS-FCA
10h 21m2 stops
Delta Logo
5:25 am - 5:19 pmFCA-BOS
9h 54m2 stops
$358Delta
Find Deal
Tue, Apr 7 - Wed, Apr 8
Delta Logo
5:30 am - 1:51 pmBOS-FCA
10h 21m2 stops
Delta Logo
6:12 pm - 6:13 amFCA-BOS
10h 01m1 stop
$363Delta
Find Deal
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’s the cheapest day of the week to fly from Boston to Kalispell?

The average price of all round-trip flights from Boston to Kalispell clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Kalispell on a Tuesday and more expensive on a Sunday. On your return trip to Boston, you should consider flying back on a Monday, and avoid Sundays for better deals.

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 January, where tickets cost $404 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $1,042 and $722 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 29% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low seasonOctober
Cheapest flight$149
Best time to beat the crowds with an average 30% drop in price.
Most popular time to fly and prices are also 6% 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 $296 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 $620 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 11288 reviews
7.0Entertainment
8.1Boarding
7.1Food
7.8Comfort
8.5Crew
Airline reviews

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.

4.0 OkayMichael, Oct 2025BOS - PDX
Read more Alaska Airlines reviews

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… 🥲

I liked that it didn't take 10 hours to drive here. Super short trip!

Wheelchair assistance was provided in Seattle and was very gratefully accepted. Thank you to the Alaska staff.

Upon arrival I was disappointed that the assist I requested to get to the baggage claim wasn't provided. The entire baggage area was not clearly marked and I wanted to store my baggage overnight, that wasn't available. I had to take it on the shuttle to the hotel!

The staff was extremely pleasant, and the ride was uneventful… If I were going to a place they serviced, I would take Alaska again

The ticket agents in West Palm Beach on Friday afternoon Nov. 7th were incredible in getting us on an earlier plane to Atlanta during the government shutdown. Had the taken our original flight we would have missed our connection. She did this on her own, We didn't even have to ask, and she did it all with a smile and showing genuine concern that we would be taken care of. We are very grateful and thankful. We fly often, and now we will be sure to fly Delta.

Flight delayed then cancelled. Misplaced luggage. Still do not have. Rented car 1100 mile drive. I had to buy some overnight Hotels clothes toiletries gas food at my expense. Still not home. Not sure where luggage is. Over 4 hours on hold to Felta

I truly love flying with Delta. They have always treated me with the upmost respect

Our flight attendant in FIRST CLASS was one of the worst I’ve ever had. She was not at all pleasant, nor particularly good at her service.

Everything went well and was good. Nothing exceptional, but no complaints either. Cheap seats are pretty comfortable.

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

The crew was quite good, they came by often with drinks or to collect trash. But what wasn't nice was the flight was over weigh and several people had to be rebooked. I was questioned whether I should have a seat when I was getting to it. The in-flight entertainment kept buffering and interrupting. And the route took the airplane through high winds which caused us a longer flight

Wasn’t on the flight due to Alaska cancellation…also after all the rerouting, I was going to be on a later flight that left SFO at 7:47pm, which meant an almost 6 hour layover. That same Hawaiian flight was delayed for another 2hours.

I had to cancel the flight because with a 3 hour delay for 'unexpected maintenance' in getting to LAX, I couldn't connect to an overseas flight that I had booked on Scandinavian Air.

The flight was CANCELED!!! Can’t get much more “poor” than that. I had to switch to American Airlines, add another layover and got home in Honolulu 4 hours later than I was supposed to be home. One bright spot was Josh with Alaska Airlines at SFO. He got me on a United Flight that got me home a few hours before I would have. Without him I would have gotten home almost 7 hours after my originally scheduled flight.

Canceled my flight within 24 hours, causing me arriving home midnight. Will never book Hawaiian airlines anymore

I like Hawaiian, it was great that they had good internet connection across the Pacific Ocean, thanks to Star Link satellites. The seating was comfortable, ( I was in economy ). Maybe I missed it, but I only got offered a beverage once. It was a nonstop flight KOA to SMF. I would take it again next time I go that way.

I always love flying Hawaii and I have nothing to add

Previously flown Hawaiian Airlines on similar routes, I found Alaska Airlines to be noticeably more comfortable. The seats on Alaska Airlines provided better support and cushioning, which made a significant difference on the long flight to the islands. When you’re spending 5-6 hours in the air, seat comfort really matters, and Alaska Airlines delivered where it counts. After comparing both carriers, I’ve decided to book with Alaska Airlines for all my future Hawaii trips. The superior seat comfort alone makes it worth choosing Alaska over Hawaiian Airlines. If you’re planning a trip to Hawaii and prioritizing comfort, I’d recommend giving Alaska Airlines a try. You won’t be disappointed. Highly recommended for Hawaii travel!

I received several emails about my 3:10 flight. When I showed up to the airport at 12:30 to check my bags I was told the flight was actually at 1 pm. They grudgingly rebooked me for a flight at 5:22 to Vegas to get a connecting to LAX. I did find the gate for my original 3:10 flight but they were booked. I proceeded to receive status updates and gate change information for the 3:10 flight, even though I was apparently never supposed to be on that flight

My flight was delayed three hours and then cancelled. The gate agent proceeded to rebook me in a middle seat without telling me and I was placed between two large individuals who did not fit in their own seats and instead took up most of mine. It was an awful experience.

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

Older aircraft, no meal, only food was for purchase. Not impressed United.

United needs to step up their game. Delayed flight leaving Seattle, San Francisco. Older aircraft, not very comfortable.

Always wish for more healthy, gluten free options. We have to bring our own.

Having a long layover, I was very appreciative of the ability to stand by for an earlier flight. Other airlines like Delta have refused this to me in the past, just to be mean (because my ticket class wasn't high enough). United went out of their way to help me get to my destination early, which I really appreciated given that it was the third leg of a 24+ hour journey for me.

Other than a way way too cold cabinets for the entire flight, all was great

One bag is incorrect and not acceptable for an international flight. The food was not just good. I won't fly with them again.

Not pleasant trip cross country when the entertainment and WiFi system not working. No entertainment for entirety of route. Staff was rather nonchalant in that they dismissed the problem due to age of plane. It would have been nice to know this up front so I could have come prepared to read or download movies before boarding Coincidentally or not, there was a similar issue with the entertainment system on my previous flight I took on my fist leg of the trip. There are no seat TVs, so you must rely on the app when it works. United can do better. Also, what use it it to pay for boarding group 2 when half of the passengers are in the same line as you?

Plane boarded early a quickly, was mostly full. We left close to on time. And landed early.

Premium Plus is a really good idea for longer flights

we landed at cmh ten minutes early but had to sit on tarmac for twenty minutes because a plane was at our gate despite the fact that 3 other gates were open.

The experience with American Airlines was good, although the Philippines Airlines flight was much better (better seats, better food, better entertainment options, overall better). Again, the MIA to LAX flight was fine, but nothing in comparison to the comfort and accommodations of the Philippines Airlines flight from LAX to MNL.

I have a gluten allergy so did have any food

I have a gluten allergy so didn't have any food

Loved the crew . Absolutely no complaints. Except for luggage lost

Everything was good The connects, with no blame to crew. Or pilots. I understand they are short staffed. Everything went well for me. I'll be using you guys again in May if not sooner.

this plane was really old, had exit row seats and tray was in arm of seat so super uncomfortable to use. another seat they could t even use the tray it was broke. seat i. front of me had duct tape on it cause seat was ripped open... this plane should either be updated or retired.

Baggage handling poor. Second time this has happened. My bag went to San Francisco instead of Fiji. No apology. Luckily Nadi airport staff are fantastic. My bag arrived in Fiji the next day.

We loved the steward on the plane. He made the night enjoyable

I enjoyed the extra leg room compared to other airlines. The first stewards made my daughter’s birthday special by giving her an extra snack. Then the last one coming home from Chicago to Appleton made our night really enjoyable Thanks for making our trip enjoyable

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

Information on your arrival and departure airports