FCA - BOS

$195 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 9/5. 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
$389
Typical prices: $416-$604
Delta
Wed 9/2Wed 9/16
FCA - BOS • 1 stop
Cheapest one-way
$195
Typical prices: $289-$375
Delta
Sat 9/5
FCA - BOS • 1 stop
Top airlines
Cheapest • from $389 (round-trip)
Best reviews • 7.8 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 16m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
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 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

Wed, Sep 2 - Wed, Sep 16
Delta Logo
3:14 pm - 11:58 pm
FCA
-
BOS
6h 44m
1 stop
Delta Logo
6:05 am - 11:47 am
BOS
-
FCA
7h 42m
1 stop
$389Delta
Thu, Sep 3 - Sun, Sep 6
United Airlines Logo
3:58 pm - 1:11 am
FCA
-
BOS
7h 13m
1 stop
United Airlines Logo
7:30 am - 3:54 pm
BOS
-
FCA
10h 24m
2 stops
$394United Airlines
Thu, Aug 27 - Wed, Sep 2
United Airlines Logo
3:58 pm - 1:11 am
FCA
-
BOS
7h 13m
1 stop
United Airlines Logo
6:01 am - 11:27 am
BOS
-
FCA
7h 26m
1 stop
$408United Airlines
Tue, Sep 22 - Sat, Oct 3
Delta Logo
6:00 pm - 6:30 am
FCA
-
BOS
10h 30m
1 stop
Delta Logo
5:55 am - 1:25 pm
BOS
-
FCA
9h 30m
1 stop
$414Delta
Fri, Aug 28 - Mon, Aug 31
American Airlines Logo
4:50 pm - 9:37 am
FCA
-
BOS
14h 47m
1 stop
American Airlines Logo
7:10 am - 4:10 pm
BOS
-
FCA
11h 00m
1 stop
$418American Airlines
Sat, Oct 17 - Sat, Oct 24
United Airlines Logo
12:26 pm - 11:59 pm
FCA
-
BOS
9h 33m
2 stops
United Airlines Logo
5:45 am - 1:28 pm
BOS
-
FCA
9h 43m
2 stops
$419United Airlines
Thu, Oct 22 - Mon, Oct 26
American Airlines Logo
1:58 pm - 11:36 pm
FCA
-
BOS
7h 38m
1 stop
American Airlines Logo
7:00 am - 1:27 pm
BOS
-
FCA
8h 27m
1 stop
$424American Airlines
Thu, Aug 27 - Wed, Sep 2
United Airlines Logo
3:58 pm - 1:11 am
FCA
-
BOS
7h 13m
1 stop
United Airlines Logo
7:30 am - 3:54 pm
BOS
-
FCA
10h 24m
2 stops
$428United Airlines
Thu, Aug 20 - Tue, Aug 25
United Airlines Logo
3:58 pm - 1:11 am
FCA
-
BOS
7h 13m
1 stop
United Airlines Logo
10:38 am - 6:54 pm
BOS
-
FCA
10h 16m
1 stop
$453United Airlines
Thu, Aug 6 - Tue, Aug 11
American Airlines Logo
4:50 pm - 9:37 am
FCA
-
BOS
14h 47m
1 stop
American Airlines Logo
6:14 am - 4:10 pm
BOS
-
FCA
11h 56m
1 stop
$455American 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 September.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Kalispell to Boston, 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 Kalispell to Boston is January, where tickets cost $0 (return) on average. On the other hand, the most expensive months are February and July, where the average cost of round-trip tickets is $821 and $689 respectively.

Good to know

Low seasonDecember
Cheapest flight$195
Best time to beat the crowds with an average 30% drop in price.
Most popular time to fly and prices are also 9% lower on average.
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 5 days, the lowest price for a flight from Kalispell to Boston was $195 for a one-way ticket and $389 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, SkyTeam, and Star Alliance 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, 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 $517 and an overall rating of 7.8, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $604 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 3 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.
7.8
DeltaOverall score based on 8452 reviews
7.2Food
8.5Crew
7.8Entertainment
7.8Comfort
8.1Boarding
Airline reviews

My flight was delayed by 4 hours in 30 minute increments. The gate agents were amazing but the communication was not. We were told that there was a maintenance issue but they didn't know what it was. That didn't inspire confidence. Then they said they found it and it was fixed and the pilot just needed to sign off. Then the pilot needed to talk to the other pilot from the arriving flight and we'd be fine. Then we were waiting for the pilot to call back. Then the maintenance issue wasn't fixed. Then they decided we were getting a new plane (why didn't they decide this earlier??). Fine. But then they announced we were changing gates AND terminals. And we were boarding in 20 minutes. So we all had to run to the new terminal gate. We could have taken off at that time, but we then had to wait for all the people who rebooked on a different flight to book this flight again. That took 30+ minutes because there was only one gate agent. When everyone ditched this flight, I saw it as an opportunity to upgrade to comfort. Delta, the greedy jerks they are, charged me $121. After their delay, their fault, their issues, couldn't even discount an upgrade. They only handed out $12 meal vouchers for the delay. I can't even get a snack from starbucks for that.

2.0 MediocreBlake, Jun 2026
SEA - BOS
Read more Delta reviews

My flight was delayed by 4 hours in 30 minute increments. The gate agents were amazing but the communication was not. We were told that there was a maintenance issue but they didn't know what it was. That didn't inspire confidence. Then they said they found it and it was fixed and the pilot just needed to sign off. Then the pilot needed to talk to the other pilot from the arriving flight and we'd be fine. Then we were waiting for the pilot to call back. Then the maintenance issue wasn't fixed. Then they decided we were getting a new plane (why didn't they decide this earlier??). Fine. But then they announced we were changing gates AND terminals. And we were boarding in 20 minutes. So we all had to run to the new terminal gate. We could have taken off at that time, but we then had to wait for all the people who rebooked on a different flight to book this flight again. That took 30+ minutes because there was only one gate agent. When everyone ditched this flight, I saw it as an opportunity to upgrade to comfort. Delta, the greedy jerks they are, charged me $121. After their delay, their fault, their issues, couldn't even discount an upgrade. They only handed out $12 meal vouchers for the delay. I can't even get a snack from starbucks for that.

Much better than Latam, the worse airline company ever. I hope I don't have the need to fly Latam ever in my life again.

My flight yesterday evening was delayed 3.5 hours with no water or food service. Poor experience

The tray table was broken and the food was terrible.

Flight delayed. Air broken. Cabin was hot enough to pass out. Delta shuttle’s becoming worse and worse.

The first class flight attendant was awful to everyone. Very rude; no customer service. She should not be working in first class.

delta last minute gave me a boarding pass for a different flight with no confirmation that they were changing it

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.

Advertised fruit trays with cheese, but only snacks handed out!

This flight was straightforward and without difficulty. Service was OK, but I continue to be underwhelmed by level of attention given to Sky Priority passengers.

My service dog and I were asked to deplane just before they closed the door - clearly very last minute they couldn’t find the documentation that I have filled out many many times before that is for flying service animals. I purposely purchase 3seats (a whole row) since he is large and not all passengers want to sit next to a dog on a cross country flight. The plane departed with my husband on it!!! They made me fill out a hard copy of the same form and had to reschedule me on a later flight where they could find 3 seats together!! I’ve done this so many times before - clearly the error was on their part in a technology glitch - but really people - do better!! Very traumatic - and my husband had to wait for us when he landed ….so bad. Poor pup was confused and tired.

Super friendly with lots of drink options an entertainment. Friendly crew.

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

United airlines has the best customer experience from booking to arrival. I always fly United airlines. The mileage program is excellent

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Plenty of room for me and the cat in Premium Economy. Seat was comfortable. Boarding was a breeze. The lady at the special check-in desk was great, super helpful and professional.

It’s been awhile since I have traveled on United. I, along with my family who were on the flight noted how smoothly everything went . Boarding, flight crew and service was excellent.

I was forced to check my carry-on backpack despite there being space - but it came out on the baggage carousel so fast it didn't even delay my pickup. Otherwise a good flight. Boarding began early (which was disadvantageous for me) but fine.

Excellent staff helping my 96 year old senior promptly with her oxygen needs

Good even though flight was delayed, the crew was prompt and efficient.

Same plane as RDU to LGA — internet not working. Pilot issue of some sort at end of prior flight - I was on same plane for my connection. Late/delayed —

I was in last row so that is never great bc the person in front of me leaned his seat all the way back into me.

Half of the TSA checkpoints at PHL are closed. Also, there is no standby for first class passengers. You can only standby for coach. Very dated policy and inconsistent with peers.

We had a male flight attendant who was super attentive and wonderful! Very professional. I have both gluten and dairy intolerance, and was only able to get a gluten free part, and not the dairy free part of the meal. Easy to order ahead of time and I appreciate being able to do that.

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

Qatar airways ,boarding arrangements at Hamid international airport could been better

AA should improve their in air internet & entertainment options. Seems unreasonable to charge $20/hr and should have some form of free connections. The entertainment options are also pretty limited, movies are outdated and the series only show 3-5 episodes.

They only offered water for Group 6. Awful announcements from the Crew. Couldn't understand a single word. Barely came by for the trash afterwards. Man, I love water for a premium flight. Wow. Water in a cup.

Ring in first class for an overnight flight, there was no blankets nor pillows for first class customers.

Flight was delayed. Staff at the gate effectively and proactively communicated about the delay.

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

Information on your arrival and departure airports