STL - FCA

$257 Find Cheap Flights from St. Louis to Kalispell

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Kalispell departing on 2/6. 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 St. Louis 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 St. Louis to Kalispell, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$307
Overall average: $466
Alaska Airlines
Fri 2/6Tue 2/10
STL - FCA • 1 stop
Cheapest one-way
Multiple Airlines
Wed 12/3
STL - FCA • multi-stop
Top airlines
Alaska Airlines
Cheapest • from $307 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 38% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
December
Cheapest • 30% price drop
July
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 St. Louis to Kalispell (STL-FCA)

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

Fri, Feb 6 - Tue, Feb 10
Alaska Airlines Logo
2:50 pm - 11:58 pmSTL-FCA
10h 08m1 stop
Alaska Airlines Logo
7:46 pm - 1:54 pmFCA-STL
17h 08m1 stop
$307Alaska Airlines
Find Deal
Tue, Dec 9 - Wed, Dec 24
Delta Logo
6:30 am - 11:31 amSTL-FCA
6h 01m1 stop
Delta Logo
1:55 pm - 10:16 pmFCA-STL
7h 21m1 stop
$308Delta
Find Deal
Wed, Dec 10 - Thu, Dec 25
Delta Logo
11:40 am - 11:10 pmSTL-FCA
12h 30m2 stops
Delta Logo
5:20 am - 1:23 pmFCA-STL
7h 03m1 stop
$313Delta
Find Deal
Tue, Dec 9 - Tue, Dec 16
United Airlines Logo
9:00 am - 1:35 pmSTL-FCA
5h 35m1 stop
United Airlines Logo
2:37 pm - 8:57 pmFCA-STL
5h 20m1 stop
$314United Airlines
Find Deal
Tue, Dec 9 - Tue, Dec 16
Delta Logo
6:30 am - 11:31 amSTL-FCA
6h 01m1 stop
Delta Logo
5:00 am - 6:33 pmFCA-STL
12h 33m2 stops
$319Delta
Find Deal
Tue, Dec 9 - Tue, Dec 16
Delta Logo
2:38 pm - 11:10 pmSTL-FCA
9h 32m2 stops
Delta Logo
12:11 pm - 11:29 pmFCA-STL
10h 18m2 stops
$324Delta
Find Deal
Fri, Dec 12 - Wed, Dec 24
Delta Logo
6:30 am - 11:31 amSTL-FCA
6h 01m1 stop
Delta Logo
1:55 pm - 10:16 pmFCA-STL
7h 21m1 stop
$333Delta
Find Deal
Tue, Dec 16 - Sat, Dec 20
Delta Logo
6:30 am - 11:31 amSTL-FCA
6h 01m1 stop
Delta Logo
1:55 pm - 10:16 pmFCA-STL
7h 21m1 stop
$334Delta
Find Deal
Tue, Jan 20 - Sat, Jan 24
United Airlines Logo
4:15 pm - 9:59 pmSTL-FCA
6h 44m1 stop
United Airlines Logo
7:00 am - 9:13 pmFCA-STL
13h 13m2 stops
$337United Airlines
Find Deal
Fri, Dec 12 - Sat, Dec 20
Delta Logo
6:30 am - 11:31 amSTL-FCA
6h 01m1 stop
Delta Logo
1:55 pm - 10:16 pmFCA-STL
7h 21m1 stop
$339Delta
Find Deal
Booking Insights

KAYAK's insights & trends for St. Louis to Kalispell flights

Get data-powered insights and trends into flights from St. Louis 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 St. Louis to Kalispell?

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

When flying from St. Louis to Kalispell, you should consider leaving on a Wednesday and avoid Thursdays if you are looking for the best rates. For your return to St. Louis, you’ll find the best rates on Fridays and the most expensive ones on Mondays.

What is the cheapest month to fly from St. Louis to Kalispell?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis 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 St. Louis to Kalispell is December, where tickets cost $314 (return) on average. On the other hand, the most expensive months are July and March, where the average cost of round-trip tickets is $644 and $582 respectively.

How far in advance should I book a flight from St. Louis 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 St. Louis 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 St. Louis to Kalispell, you should book around 2 weeks before departure, which saves you about 38% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 3 weeks before departure.

Good to know

Low seasonNovember
Cheapest flight$307
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly with an average 42% increase in price.
Flight from St. Louis to Kalispell

When to book flights from St. Louis to Kalispell

Are your dates flexible? Find out the best times to travel from St. Louis 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 St. Louis to Kalispell

  • What is the cheapest flight from St. Louis to Kalispell?

    In the last 3 days, the lowest price for a flight from St. Louis to Kalispell was $257 for a round-trip ticket.

  • Do I need a passport to fly between St. Louis and Kalispell?

    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 St. Louis to Kalispell?

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

  • Which airline alliances offer flights from St. Louis to Kalispell?

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

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

    The two airlines most popular with KAYAK users for flights from St. Louis to Kalispell are Alaska Airlines and Delta. With an average price for the route of $457 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 $423 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from St. Louis 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 St. Louis to Kalispell.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Kalispell from St. Louis 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 St. Louis 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 St. Louis with another airline. Booking your flights between St. Louis 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 St. Louis 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 St. Louis 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 St. Louis to Kalispell

 
See real verified KAYAK customer reviews for airlines flying from St. Louis 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 St. Louis 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 11388 reviews
7.1Food
7.0Entertainment
8.5Crew
7.8Comfort
8.1Boarding
Airline reviews

Flight crew and flight were good. But it departed two hours late.

6.0 GoodAnonymous, Dec 2025SFO - BOI
Read more Alaska Airlines reviews

Flight crew and flight were good. But it departed two hours late.

The rice pudding was terrible. The bread with the hummus was fair. The ravioli was okay. The snacks were great. The two delays were not pleasant. In the beginning I understand, but on arrival we sat for about 30 minutes before getting at the gate.

The food selections were not good, and entertainment was non existent.

I always like flying with Alaska, great service and leg room

They changed our flight from a one stop 3 hour layover to a non-stop. Saved us hours and got us there sooner.

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

We appreciated that the flight attendant came through 3 times with drinks or water on the long flight..I was also glad that they were separating out recycling! I would have liked a 12oz sofa can instead of 7oz, but that's a minor quibble. The knee space in economy was also better than most of Alaska's competitors.

No beverages were served on the flight to Vegas as there was turbulence. It was actually one the smoothest flights that I have ever been on. My return flight home I upgraded my seat for $87 and the crew came through the cabin and served every row except mine drinks... I was waiting for them to come back and they never did. I most likely would never fly Alaska again. It was my first time and I've had better service on Frontier... Might as well pay less for my flight and still get to purchase something to drink than pay more and get passed over.

First Class seats had no more legroom then Premium Economy. There was no working WiFi or entertainment. I would have rather paid $400 more and flown on United for the 6 hours from EWR to SFO.

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!

Good seats in Main cabin, excellent service and excellent landing

My flight was cancelled with no explanation after I had already cleared security. I was given 4 options to rebook, only one being non-stop like I had paid for. I grabbed it. It was 4 plus hours later and then took off even later. Biggest complaint is that I booked early and had an aisle seat. They gave me a "window" seat in front of the exit row, so the seat did not decline. I weigh all of 103 #s and it was tight for me! For what I paid, I feel I was kind of ripped off. I think they should have given me the empty comfort seat for the inconvenience. There was no apology nor any explanation as to why the flight was cancelled. My guess is it benefitted Delta in some way.

Very smooth, on-time, and pleasantly uneventful flight. The team at the gate and on board were professional and genuinely courteous. The pilot kept us well updated throughout, and both takeoff and landing were steady and enjoyable without any drama. Just a good, solid flight. Thank you! 💗

Staff was exceptional! Everyone was kind, professional and friendly making the trip very pleasant. Thank you!

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

We had a lot of really rough weather but that was not Delta's fault. Pilot was amazing.

First, Delta needs more flights to/from Miami. Second, a 1000pm leaving at 1230pm is unacceptable from their biggest airport world hub. Another aircraft could have been used such as the aircraft scheduled to be used in the morning for that exact same route. Yes, I did get me there but the lack of sleep the next day didn't help me enjoy my entire trip since I was busy with activities during the weekend. This can be and is expected from Spirit (going bankrupt) and Frontier (despite they're nickel and dimers). But from Delta's World Hub? That's totally unacceptable!

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.

It would’ve been nice for all that money to have a more substantial snack for free. I remember once upon a time getting a very nice turkey sandwich with Swiss cheese on whole wheat bread for no charge along with a drink. I guess those days are gone. it’s a little insulting being given a cookie or a bag of baked chips Going forward I’ll just bring my own.

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

After a delay at the gate, C3, at Ohare on Sunday, I left my Blk ski coat on the bench at the gate, lost! Please review my lob claim, thx.

Very bad! They kept delaying my flight and wouldn’t do anything about it

They brought an empty plane to the gate. Then a flight delay was announced for maintenance and waiting on a part. I was then put on a flight to San Francisco instead with a connecting flight to my final destination. Arrived at my final destination 2 hours late.

The only downside was my cell phone charger wouldn’t work in the charging port but everyone else’s would work in them all. My cell phone cable works fine in my hotel room in Frankfurt.

Flight team stood out for perzonal attention, kindness at bright cheery attitudes at 8am. Very helpful.

Ot was overall fine. Left on time and had basic snacks. Weather was finicky but that’s not the airlines fault.

Very thoughtful flight attendant offered me water immediately since I had run to make my connection.

Door to door, the crew and staff were amazing. It was a stressful travel day with delays, but they were focused on customers and doing what they could to get us to our destinations.

Even though we were delayed, we were able to make our connection

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.

AA delayed the flight for 3 hours and 50 minutes, but delayed the last 2 hours, 30 minutes at a time, so if we knew before, could have stayed at home and worked instead of being at the airport wasting time... The plane's crew was excellent, not their fault.

After arriving in Dallas, the aircraft taxied for an unusually long time and was unable to park at the gate, which caused a significant delay and made me miss my connecting flight. I then had to wait in a very long line to be rebooked, and I was told that no hotel or meal accommodations would be provided. What is even more unacceptable is that my luggage was mishandled and has still not been located. My suitcase contains important medications that I urgently need, and I have been unable to access them due to the airline’s mishandling. This situation has caused me considerable stress and inconvenience, and I need this issue to be resolved immediately.

RIC Staff was not enough. Elderly passengers had to wait 30 minutes to deplane, so we could board and still had to walk as no chairs were provided. And, passenger in front of my seat assignment rammed seat against my legs entire flight time. Was mildly bruised and left thigh still sore.

Liked that it was on time. Staff professional and friendly.

Things were delayed a little. But that didn’t affect my plans. It was fine. I was surprised it was so full thanksgiving day. The crew were friendly and professional.

I appreciated that it was on time, safe and professional. I didn’t like that I wasn’t in a place where I had a window at my window seat. It would have been nice to know that in advance. If it was mentioned in the ticketing, I didn’t notice it.

My flight was delayed about three hours. I got home at 3:30 in the morning very bad experience.

I like that the crew kept us informed but we moved back and forth from gate to gate before the aircraft arrived.

The flight was delayed multiple times, again no fault of American but again the extra cost, for everything makes it feel like a cheap airline! Especially when flights are outrageously expensive already

Horrible. Both legs of my flight were delayed more than 6 hours. No compensation, no screens on the plane, and the plane was not clean.

Everything you need to know for your flight from St. Louis to Kalispell

Information on your arrival and departure airports