STL - FCA

$134 Find Cheap Flights from St. Louis 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 St. Louis to Kalispell departing on 2/27. 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
Travelers love KAYAK
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Everything you should know

Cheapest round-trip
$252
Typical prices: $350-$401
United Airlines
Mon 4/20Sat 4/25
STL - FCA • 1 stop
Cheapest one-way
$134
United Airlines
Fri 2/27
STL - FCA • 2 stops
Top airlines
United Airlines
Cheapest • from $252 (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 43% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
November
Cheapest • 35% price drop
August
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

Mon, Apr 20 - Sat, Apr 25
United Airlines Logo
2:40 pm - 9:27 pm
STL
-
FCA
7h 47m
1 stop
United Airlines Logo
6:00 am - 1:08 pm
FCA
-
STL
6h 08m
1 stop
$252United Airlines
Thu, Apr 9 - Mon, Apr 13
Delta Logo
6:12 pm - 11:41 pm
STL
-
FCA
6h 29m
1 stop
Delta Logo
2:49 pm - 11:12 pm
FCA
-
STL
7h 23m
1 stop
$257Delta
Mon, Mar 23 - Sat, Mar 28
Delta Logo
6:12 pm - 11:41 pm
STL
-
FCA
6h 29m
1 stop
Delta Logo
5:09 am - 4:40 pm
FCA
-
STL
10h 31m
2 stops
$262Delta
Fri, Apr 17 - Tue, Apr 21
Delta Logo
6:45 pm - 11:37 pm
STL
-
FCA
5h 52m
1 stop
Delta Logo
5:05 am - 1:25 pm
FCA
-
STL
7h 20m
1 stop
$263Delta
Wed, May 6 - Mon, May 11
Alaska Airlines Logo
7:00 am - 6:48 pm
STL
-
FCA
12h 48m
1 stop
Alaska Airlines Logo
7:28 pm - 3:50 pm
FCA
-
STL
19h 22m
1 stop
$267Alaska Airlines
Mon, Mar 23 - Sat, Mar 28
Delta Logo
1:39 pm - 11:41 pm
STL
-
FCA
11h 02m
2 stops
Delta Logo
5:09 am - 4:40 pm
FCA
-
STL
10h 31m
2 stops
$268Delta
Thu, Apr 9 - Mon, Apr 13
Delta Logo
6:29 am - 1:28 pm
STL
-
FCA
7h 59m
1 stop
Delta Logo
5:05 am - 2:38 pm
FCA
-
STL
8h 33m
2 stops
$272Delta
Fri, Apr 17 - Tue, Apr 21
Delta Logo
6:10 am - 5:30 pm
STL
-
FCA
12h 20m
2 stops
Delta Logo
5:05 am - 1:25 pm
FCA
-
STL
7h 20m
1 stop
$303Delta
Tue, Apr 21 - Wed, Apr 22
Alaska Airlines Logo
3:50 pm - 11:47 pm
STL
-
FCA
8h 57m
1 stop
Alaska Airlines Logo
6:35 am - 3:50 pm
FCA
-
STL
8h 15m
1 stop
$304Alaska Airlines
Wed, May 6 - Sun, May 10
Delta Logo
6:45 pm - 11:37 pm
STL
-
FCA
5h 52m
1 stop
Delta Logo
6:12 pm - 12:36 am
FCA
-
STL
5h 24m
1 stop
$308Delta
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.

How much is a round-trip flight from St. Louis to Kalispell?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from St. Louis to Kalispell departing in April.

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 November, where tickets cost $288 (return) on average. On the other hand, the most expensive months are July and March, where the average cost of round-trip tickets is $637 and $580 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 43% 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$134
Best time to beat the crowds with an average 35% drop in price.
Most popular time to fly and prices are also 1% lower on average.
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 $134 for a one-way ticket and $252 for a round-trip.

  • 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 $414 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 $389 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 11726 reviews
8.1Boarding
7.1Food
8.5Crew
7.0Entertainment
7.8Comfort
Airline reviews

Second flight in a row that I've been on where the auto bag counter stopped working and they had to manually count cargo before takeoff. Also second flight where my whole fruit and cheese plate looked pretty stale/old. The grapes were very strange tasting to the point where I didn't eat them. Apple slices were just sad/gross looking so also avoided those.

6.0 GoodPaige, Jan 2026
DFW - SEA
Read more Alaska Airlines reviews

Second flight in a row that I've been on where the auto bag counter stopped working and they had to manually count cargo before takeoff. Also second flight where my whole fruit and cheese plate looked pretty stale/old. The grapes were very strange tasting to the point where I didn't eat them. Apple slices were just sad/gross looking so also avoided those.

I enjoyed the Starlink access but didn't have much time to use it. It also kept dropping me so I gave up. The food was very good though when I asked for a different "dessert" they didn't have anything. Chocolate Brownie Cookies are not suitable for everyone...maybe children. The flight staff were amazing - at least in First Class! My first time ever! The trip from Boise to San Diego was FAR better than going to Boise.

The whole experience went smoothly with no hitches along the way.

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

The flight was excellent and very friendly and helpful staff. Will travel again and recommend to friends. Thank you

I paid $168 each for myself and my daughter for an upgrade and we didn’t get any of the things mentioned by you/ site that comes with an upgrade. It was all just the same. One snack and one beverage. Nothing else. I don’t understand what the upgrade was.

inflight entertainment website was extremely slow to load on my phone

One of the flight attendants treated my grandma who is 77 years old badly and would respond sarcastically. Example my grandma "do you have and honey by any chance" the flight attendant "does this look like a restaurant to you. She was also very rude to myself and my children giving us attitude and being sarcastic when answering.

Flight was scheduled to leave at 6a and delayed for 5 hours due to “mechanical” issues. Everyone else on the flight received an email voucher for $24 of food for the delay, except for our group. Also the carry on luggage bins were full and the crew requested that everyone to pass their carry ons back up to the front while everyone was still standing. They gave no other direction and kept rushing the process. After all bags were sent up, they then asked for seat #s to go with each bag… They should have probably had everyone get to their sits and then pass the bags up in a controlled process.

How can I review what was denied to me. Instead of offering to let me pay for the ticket I got booted of my flight with no way home and no choice but to purchase another ticket for 12 hours later. Filing a complaint with the DOT

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.

Staff was great! Kind and cordial! Middle seat row 28 seat B has a hump in it. Trays were getting stuck when putting down and up. Good flight

Departure was delayed resulting in me missing my connection. Delta did not autimatically find me another flight.

The seats weren’t reclining even though it wasn’t as exit seat

It was good because we traveled without luggage, carry on only.

I usually get upgraded so my experience is usually amazing. I did not get upgraded this time - which was fine - but the wifi had issues, the monitors were going in & out, & (though not Delta's fault) one of the gentlemen next to me desperately needed a shower.

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

Teeny tiny bathrooms, crew was not realistic about when we'd arrive.

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 seat cushions were very worn so they were extremely uncomfortable.

Delayed, no updates, had a rewards number but was not working

The seats from lax to DFW was so tight that I could not move my legs . No WiFi and had to pay . Not a good selection of entertainment

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.

We were upgraded to First Class and it was a great flight

Amazing I love American. I’ll never fly anyone else if I can help it.

I love American. I’ll never fly anyone else if I can help it.

Flight delay and multiple gate changes including a change near boarding time to another terminal, which in DFW is a pain. Pre-boarding delay and also a further delay on the ground after boarding. About an hour and a half total delay.

On the plus side, crew was attentive, drinks were cold, and in-flight entertainment selection was better than some other airlines. On the negative aide, Plane was delayed almost an hour, either no announcements from the gate crew. Biscoff cookies are gross, appreciate airlines that give a choice. Also, crew had no personality or enthusiasm at all.

Little warm on the plane and delayed for an hour

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

Information on your arrival and departure airports