FCA - BOS

$149 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 6/28. 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
$297
Delta
Mon 4/20Wed 5/6
FCA - BOS • 1 stop
Cheapest one-way
$149
Typical prices: $299-$434
Delta
Sun 6/28
FCA - BOS • 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
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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

Mon, Apr 20 - Wed, May 6
Delta Logo
2:49 pm - 11:41 pm
FCA
-
BOS
6h 52m
1 stop
Delta Logo
5:55 am - 1:54 pm
BOS
-
FCA
9h 59m
1 stop
$297Delta
Tue, May 5 - Sun, May 10
Delta Logo
2:49 pm - 11:41 pm
FCA
-
BOS
6h 52m
1 stop
Delta Logo
5:30 am - 1:45 pm
BOS
-
FCA
10h 15m
2 stops
$302Delta
Sat, Apr 18 - Fri, May 8
Delta Logo
6:10 pm - 6:00 am
FCA
-
BOS
9h 50m
1 stop
Delta Logo
5:40 am - 1:45 pm
BOS
-
FCA
10h 05m
1 stop
$309Delta
Sat, Apr 18 - Wed, May 6
Delta Logo
6:10 pm - 6:00 am
FCA
-
BOS
9h 50m
1 stop
Delta Logo
5:35 am - 1:54 pm
BOS
-
FCA
10h 19m
2 stops
$314Delta
Sun, Apr 19 - Wed, May 6
Delta Logo
6:10 pm - 6:00 am
FCA
-
BOS
9h 50m
1 stop
Delta Logo
5:55 am - 1:54 pm
BOS
-
FCA
9h 59m
1 stop
$338Delta
Sat, Apr 18 - Fri, May 8
Delta Logo
6:10 pm - 9:49 am
FCA
-
BOS
13h 39m
2 stops
Delta Logo
5:40 am - 1:45 pm
BOS
-
FCA
10h 05m
1 stop
$343Delta
Mon, Apr 20 - Fri, May 8
Delta Logo
2:49 pm - 8:44 am
FCA
-
BOS
15h 55m
2 stops
Delta Logo
5:40 am - 1:45 pm
BOS
-
FCA
10h 05m
1 stop
$346Delta
Sat, Apr 18 - Wed, May 6
Delta Logo
6:10 pm - 9:49 am
FCA
-
BOS
13h 39m
2 stops
Delta Logo
5:35 am - 1:54 pm
BOS
-
FCA
10h 19m
2 stops
$349Delta
Sat, Apr 18 - Mon, May 4
Delta Logo
6:10 pm - 6:00 am
FCA
-
BOS
9h 50m
1 stop
Delta Logo
5:55 am - 1:54 pm
BOS
-
FCA
9h 59m
1 stop
$350Delta
Sun, Apr 19 - Tue, May 5
Delta Logo
12:10 pm - 7:29 am
FCA
-
BOS
17h 19m
2 stops
Delta Logo
5:55 am - 1:54 pm
BOS
-
FCA
9h 59m
1 stop
$366Delta
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.

Which airlines provide the cheapest flights from Kalispell to Boston?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Kalispell to Boston were found on Delta ($297) and Alaska Airlines ($385).

Good to know

Low seasonDecember
Cheapest flight$149
Best time to beat the crowds with an average 26% drop in price.
Most popular time to fly with an average 40% 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 $149 for a one-way ticket and $297 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?

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

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

    The two airlines most popular with KAYAK users for flights from Kalispell to Boston are Alaska Airlines and Delta. With an average price for the route of $630 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 $489 and an overall rating of 7.9.

  • 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 4 airlines serving 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.
8.0
Alaska AirlinesOverall score based on 11775 reviews
7.0Entertainment
8.1Boarding
8.5Crew
7.1Food
7.8Comfort
Airline reviews

There is nothing critical to complain about but I would say the snacks are pretty bad Airline staff could be aggressive the way they move through the aisles and the plane I also got hustled for a small wallet size men bag and force the consolidated with my carry on item we're talking about a wallet size bag.

6.0 Goodrsmrostov, Jan 2026
SEA - BOS
Read more Alaska Airlines reviews

There is nothing critical to complain about but I would say the snacks are pretty bad Airline staff could be aggressive the way they move through the aisles and the plane I also got hustled for a small wallet size men bag and force the consolidated with my carry on item we're talking about a wallet size bag.

No communication with delayed and canceled flights. Completely in the dark for the whole experience.

Honestly the bathroom cabinet under sink fell out and was completely broken. The floor or walkway was worn out and it smelled wierd. But the seats were terrible for comfort. I truly hope that my trip home in February is better.

We sat on the tarmac for so long when we got to SeaTac that half the plane missed their connections.

Poor, no one with Alaska Airlines is in a hurry to do anything. Slow, lack of intent, inconsistent.

The flight attendants were excellent and I was in the back of the plane. Much much better than recent JetBlue experiences on that route and better than Delta on that route.

I liked that the crew was friendly, we left and arrived at near scheduled times, plenty of on-board crew to handle the cabin service for the flight and I found the price of my airline ticket to be excellent!

Had no way to see what gate came in on or what gate connecting flight would take off.

The small ej plane didn’t have any entertainment aside from the stuff on the Alaska website that has to be accessed from your own device. But everything else was just great.

The flight attendants were friendly. I liked that I got a mini soda can, not just a small cup. No issues with our flight departure, etc.

There was no wifi available on this flight. And there were no screens, no onboard entertainment, no entertainment options at all. It was like travelling in the 1990s again, except without even a main screen for options. Seats, as usual, were tight and uncomfortable.

Good seat comfort ORF to ATL. Bad seat ATL to SEA (terrible lumbar support, hard, ouch)..

Because I was moved to an exit row, the snacks in economy comfort, the selection of snacks was better.

I upgraded to first. Quick and easy boarding. Comfortable seat with power and a nice IPA.

Probably not the fault of Delta but there was delay after delay after delay and I ended up getting home 4 hours later then I should have at 1:30 in the morning

No in flight service, no explanation - FC got service, C+ did not, unsure about Economy. No turbulence to speak of, so I guess another way to cut cost, or promote health and well being of Delta employees? Also, boarding in MEM combined zones, and with overhead space already full on both flights after Zone 2/ Diamond, presents a huge challenge to find a space for a bag. Delta, other than point A to B, is no longer reasonable to fly - very poor experiences, not even taking into account the chastising at the gate and rude crews, across the board.

It would have been better if the flight wasn't delayed by 2.5 hours

Delta’s staff is unmatched. From the gate agents, to the pilots, to the flight attendants… all top of the industry.

Delta flight Delay for ,more that two hours i.e original flight was 6.30 PM and it starts at 8.45 PM, When we connect Delta team for meal vouchers as it is late arrival in designation,But we did not get it as per delta policy , which is not good for mid night arrival,

Inexperienced boarding crew allowed too many bags on to a full flight and delayed takeoff causing a missed connection and unplanned overnight stay. There was a hotel at the airport but Delta would not pay for it offering only to shuttle me to an area hotel. Never even offerred so much as an apology by anyone working for Delta.

Unfortunately weather delayed our flight waiting for our plane to arrive and due to a little snow time was needed to deice the plane so departure was very delayed and I missed the connecting flight

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

I wish there were outlets to charge my iPhone. The crew was great; we had a female pilot who was great with explaining what was happening and delays,

The flight crew where really good. Better then the crew from BNE to SFO

Delayed, toilets did not flush, pilot parked to far away from Gate

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Yet another flight in which beverage and snack service was skipped. Other that that, firmly mediocre. Landed early, to gate late due to congestion at the gates. Airline's fault or airports fault: unknown.

Miserable. They moved my seat, but canceled the next leg of my flight. I resolved the issue at my transfer, but that resulted in lost luggage that has taken days off my schedule with no resolution. Worse, they fail to interface effectively with Lufthansa, forcing me to bounce between two equally useless help desks. The apps are unable to handle the situation, the bag dropped off the tracker, and while the call centers are polite, they do not provide written information to assist with cross-airline communication.

left on time, reasonable boarding process arrived early luggage came out quickly

I like flying first class, and United has a nice one

This flight captain and crew were amazing, started ahead of time of departure and reached 30 mins before arrival time. Amazing!

Long delays, lack of information about the status of the flight. The flight was delayed 4 times.

Could we please end the loud announcements about credit card offers on your flights? We are trying to sleep, work, watch videos, etc. and if we need a credit card, we will ask for one. Flying is already not what it used to be.

I would like the crew to talk LESS over the PA and specifically about credit card offers. I am trying to work, sleep, watch a movie and the PA was booming about a credit card offer. Could we go back to the days when the customer was more important than selling a credit card?

No enough space plus only allowing one laggage instead of two like other airlines.

It was good. But the gate team made me check my carry on when there was plenty of space for my luggage on the plane. Otherwise our trip was fine.

The entertainment options were at best, fair. It was exactly the same as my outbound flight. It would have been more entertaining if there were some series from Apple TV, HBO, Showtime or other carriers for me to catch up with.

Concern Regarding Significant Gate Delay and Jet Bridge Issue Dear Customer Relations Team, I am writing to express my disappointment with the experience I had on my recent flight AA 2414 on Sunday January 18, 2026. What should have been a routine departure turned into a frustrating and avoidable delay due to an issue with the jet bridge at the gate. As a result, the flight was delayed by approximately 90 minutes while multiple gate changes were attempted. The lack of clear communication during this period made the situation even more challenging. Passengers were left uncertain about the cause of the delay, the expected timeline, and the next steps. This not only disrupted travel plans but also created unnecessary stress for everyone on board. I understand that operational issues can arise, but a malfunctioning jet bridge and the resulting extended delay suggest an area where procedures or equipment maintenance may need attention. I hope you will review this incident to prevent similar disruptions in the future. I would appreciate acknowledgment of this concern and consideration of appropriate compensation for the inconvenience and lost time caused by this delay. Thank you for taking the time to review my experience. I look forward to hearing from you. Sincerely, Dion Dillard

They made me pay $40 to check a bag that was listed as free when I bought my ticket. Then before boarding they offered to check any bags free.

It was a good trip. Flight Attendants were friendly and responsive.

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

Information on your arrival and departure airports