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
Alaska Airlines
Thu 2/5Mon 2/9
FCA - BOS • 1 stop
Cheapest one-way
$149
Typical prices: $299-$434
Delta
Sun 6/28
FCA - BOS • 1 stop
Top airlines
Alaska Airlines
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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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

Thu, Feb 5 - Mon, Feb 9
Alaska Airlines Logo
1:54 pm - 11:54 pm
FCA
-
BOS
8h 00m1 stop
Alaska Airlines Logo
6:44 pm - 12:14 pm
BOS
-
FCA
19h 30m1 stop
$297Alaska Airlines
Sat, Apr 4 - Mon, Apr 6
Delta Logo
6:45 pm - 6:10 am
FCA
-
BOS
9h 25m1 stop
Delta Logo
5:50 am - 1:28 pm
BOS
-
FCA
9h 38m1 stop
$303Delta
Wed, Jan 21 - Sun, Jan 25
Delta Logo
3:21 pm - 11:52 pm
FCA
-
BOS
6h 31m1 stop
Delta Logo
10:35 am - 5:19 pm
BOS
-
FCA
8h 44m1 stop
$329Delta
Fri, Jan 23 - Tue, Jan 27
Delta Logo
5:24 am - 7:10 pm
FCA
-
BOS
11h 46m2 stops
Delta Logo
4:25 pm - 10:52 pm
BOS
-
FCA
8h 27m1 stop
$334Delta
Wed, Feb 25 - Tue, Mar 3
Delta Logo
5:00 am - 8:11 pm
FCA
-
BOS
13h 11m2 stops
Delta Logo
5:15 pm - 11:49 pm
BOS
-
FCA
8h 34m1 stop
$340Delta
Sat, Feb 14 - Fri, Feb 20
Alaska Airlines Logo
7:53 pm - 6:54 am
FCA
-
BOS
9h 01m1 stop
Alaska Airlines Logo
6:24 pm - 12:12 pm
BOS
-
FCA
19h 48m1 stop
$347Alaska Airlines
Thu, Feb 5 - Mon, Feb 9
United Airlines Logo
2:42 pm - 11:46 pm
FCA
-
BOS
7h 04m1 stop
United Airlines Logo
9:30 am - 9:59 pm
BOS
-
FCA
14h 29m2 stops
$360United Airlines
Wed, Feb 25 - Tue, Mar 3
United Airlines Logo
6:00 am - 9:51 pm
FCA
-
BOS
13h 51m2 stops
United Airlines Logo
6:00 am - 1:34 pm
BOS
-
FCA
9h 34m2 stops
$361United Airlines
Wed, Jan 21 - Sun, Jan 25
Delta Logo
5:24 am - 7:30 pm
FCA
-
BOS
12h 06m2 stops
Delta Logo
10:35 am - 5:19 pm
BOS
-
FCA
8h 44m1 stop
$364Delta
Fri, Jan 23 - Tue, Jan 27
Delta Logo
5:24 am - 7:10 pm
FCA
-
BOS
11h 46m2 stops
Delta Logo
9:05 am - 10:52 pm
BOS
-
FCA
15h 47m2 stops
$370Delta
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 Alaska Airlines ($297) and Delta ($303).

Which airlines fly non-stop between Kalispell and Boston?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Kalispell to Boston.

There are 4 airlines that fly nonstop from Kalispell to Boston. They are: Alaska Airlines, American Airlines, Delta and United Airlines. The cheapest price of all airlines flying this route was found with Delta at $296 for a round-trip flight. On average, the best prices for this route can be found at Delta.

Good to know

Low seasonDecember
Cheapest flight$149
Best time to beat the crowds with an average 30% drop in price.
Most popular time to fly with an average 34% 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 $694 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 $497 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 11672 reviews
8.1Boarding
8.5Crew
7.8Comfort
7.1Food
7.0Entertainment
Airline reviews

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

2.0 MediocreAnonymous, Jan 2026
BZN - SEA
Read more Alaska Airlines reviews

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.

My wife and I had seats next to each other, but when our boarding passes were printed, British Airways had moved me away from her and refused to fix it. We tried to fix it at the boarding gate and were just told flatly "no". Never again.

The flight ran out of snacks before any was offered to me. Otherwise the flight was good.

I don’t want to pay extra to choose my seat

It was Delta, but the flight attendants were stressful and disrespectful. I am a diamond member a travel weekly. I have not had a negative thing to share in quite some time. But this was noticeable.

Comfort Plus seat 11E seemed smaller than prior flights. The movie selection is good. Watched most of the most recent Tron movie. I'll watch the remaining part later as my movie is saved in the Delta Seatback Experience.

Flight was late from Newark to Atlanta, I asked flight attendant to please let my family of 3 out first when we landed to Atlanta because we were late for our connecting flight to Quito. She didn't and we were late for 5 minutes we couldn't board the plane and spend hours trying to get another flight with customer service for the next day.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

Late delayed flight delays boarding and delays leaving and delays on arrival too. Cramped plane no room no food.

DTW line is too long. The flights from DTW to BWI are always delayed for unknown reasons.

Delta canceled our flight and we had to scramble to find another airline to get home. Phoenix is not a delta hub so they didn’t have another plane. It would have been a red eye though Salt Lake City. Getting in at 5am. No bueno.

This flight was no comparison to our prior flight. I'm thinking it all has to do with the age of the aircraft.

This flight was a first class choice and left much to be desired. Seat backs on seats were falling apart and torn. Seats actually didn't come to a "full & upright position". Pull out table was sprung. Not any significant leg room. All in all we were on an obviously older plane and felt overcharged for what we received as first class.

Flight was delayed several times. At one point, they "pulled back" 15 minutes from the delayed boarding and sent a text saying we would board sooner than previously advised. The flight then was delayed again. And when we boarded, there was an unspecified technical issue which had us waiting in the plane for about an hour.

Check-in, boarding and the flight from Phoenix to Houston was quick and easy. The flight from Houston to Shreveport was delayed 5 hours. It was frustrating but I think United handled it the best they could.

They lost my luggage, so, not happy. The crew was nice but my suitcases never made it, still trying to find out what happened!

The staff was hospitable and professional. The seat had a bit of wear. The winner shade was stuck 1/4 open. I received the best of both worlds. The morning sun was able to come in and blind the screen i was trying to use while at the same time it was too low to look out and enjoy the view. Rather embarrassing for a 1st class ticket.

Perfect flight. Smooth flight. Arrived 20 minutes early at destination. Excellent service.

The flights were on time which was great give. It was holiday travel season and there’d been some weather issues. The only complaint and this is every time with United is the terrible seat design. The head rest is not built for comfort and having my neck bent forward for a cross country trip reminded me while I try not to take United flights as a rule.

I’m so sorry, I can’t remember her name, I believe it was Dimpti. She was stellar, also a mature Asian flight attendant, lots of flowers in her hair, just as amazing! But literally the crew was AWESOME . Only downside is there weren’t any charging outlets. Maybe I needed to ask a flight attendant , but it would’ve been nice to have one easily accessible.

The flight was delayed by two de-icings. The seatbelt did not work correctly. It did not stay tight.

Everything was absolutely wonderful from check in to baggage claim. Staff was very professional and sweet. Will definitely recommend United to family and friends.

Sitting on the runway after we land for almost two hours! Not sure if we should blame United or Just Dumpy Vance.

Hotter than Hades in August. Why, why do crews think that in the winter when we are already dressed for cold weather we need a cabin that is 82 degrees. Even the vents were blowing hot air.

It was fine. My connection in Charlotte to go to WPB was too late and I had to spend the night in the Charlotte Airport in the mini suites.

The flight was on time and arrived early. The crew were friendly and helpful.

My carry on baggage was damaged. Entire trip, I had to carry the baggage. When complained to the boarding crew, they got mad at me and still asked me to valet check in the cabin baggage. Rude boarding crew!!!

Everything about the flight was lovely. My only suggestion would be to offer a few more options of tv series from Apple TV or HBO.

Nothing to write home about, average flight experience. Seats were spacious enough, crew friendly enough. Loved the AA entertainment/wifi service.

Kayak was among the missing. There was not the usual advice regarding next gate after arriving in Dallas. No communication after the reminder to check in before the Moline flight. What happened?

They should have allowed for extra time to de-ice the plane before boarding passengers. This delayed us about 10-15 mins after we boarded. Overall experience was fine. Crew was friendly and on top of everything. We didn’t have any issues during the flight.

Experience was good. We were delayed in leaving by 15 mins because the flight was waiting on a family that was late in getting to the gate. Food and drink options were as expected. I highly recommend checking in ahead of time using the airline’s app so that it’s quicker to get your luggage tags as soon as you arrive at the terminal. No more waiting in long lines!

Overall experience was great. Flights were almost on time in departing and we arrived at our destination as scheduled. No issues with amenities or flight crew. Everything went well as as expected. Will fly again with American Airlines in the future!

We never made it due to delays on both ends. Gate attendant said it was mechanical but the system said otherwise, so no compensation. That’s not right.

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

Information on your arrival and departure airports