$119 Cheap Flights from St. Louis (STL) to Kalispell (FCA)

View $119 flight on Mon, Nov 3, 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Glacier Park Intl. Airport (FCA)

Cheap Flights from St. Louis to Kalispell (STL-FCA)

Prices were available within the past 7 days and start at $119 for one-way flights and $242 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, Nov 3 - Mon, Nov 17
STL
St. Louis
FCA
Kalispell
$242 Roundtrip, found 19 hours ago
$242
Roundtrip
found 19 hours ago
Select United flight, departing Mon, Nov 3 from St. Louis to Kalispell, returning Mon, Nov 17, priced at $242 found 19 hours ago
Alaska Airlines
Wed, Oct 22 - Thu, Oct 30
STL
St. Louis
FCA
Kalispell
$246 Roundtrip, found 6 hours ago
$246
Roundtrip
found 6 hours ago
Select Alaska Airlines flight, departing Wed, Oct 22 from St. Louis to Kalispell, returning Thu, Oct 30, priced at $246 found 6 hours ago
Hawaiian Airlines
Tue, Oct 14 - Wed, Oct 22
STL
St. Louis
FCA
Kalispell
$246 Roundtrip, found 7 hours ago
$246
Roundtrip
found 7 hours ago
Select Hawaiian Airlines flight, departing Tue, Oct 14 from St. Louis to Kalispell, returning Wed, Oct 22, priced at $246 found 7 hours ago
American Airlines
Wed, Oct 22 - Thu, Oct 30
STL
St. Louis
FCA
Kalispell
$247 Roundtrip, found 6 hours ago
$247
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Wed, Oct 22 from St. Louis to Kalispell, returning Thu, Oct 30, priced at $247 found 6 hours ago
United
Mon, Nov 3 - Mon, Nov 17
STL
St. Louis
FCA
Kalispell
$247 Roundtrip, found 19 hours ago
$247
Roundtrip
found 19 hours ago
Select United flight, departing Mon, Nov 3 from St. Louis to Kalispell, returning Mon, Nov 17, priced at $247 found 19 hours ago
American Airlines
Tue, Oct 21 - Thu, Oct 23
STL
St. Louis
FCA
Kalispell
$251 Roundtrip, found 1 day ago
$251
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Oct 21 from St. Louis to Kalispell, returning Thu, Oct 23, priced at $251 found 1 day ago
United
Mon, Nov 3 - Mon, Nov 17
STL
St. Louis
FCA
Kalispell
$252 Roundtrip, found 19 hours ago
$252
Roundtrip
found 19 hours ago
Select United flight, departing Mon, Nov 3 from St. Louis to Kalispell, returning Mon, Nov 17, priced at $252 found 19 hours ago
United
Wed, Oct 22 - Thu, Oct 30
STL
St. Louis
FCA
Kalispell
$252 Roundtrip, found 6 hours ago
$252
Roundtrip
found 6 hours ago
Select United flight, departing Wed, Oct 22 from St. Louis to Kalispell, returning Thu, Oct 30, priced at $252 found 6 hours ago
United
Tue, Mar 10 - Tue, Mar 17
STL
St. Louis
FCA
Kalispell
$254 Roundtrip, found 1 day ago
$254
Roundtrip
found 1 day ago
Select United flight, departing Tue, Mar 10 from St. Louis to Kalispell, returning Tue, Mar 17, priced at $254 found 1 day ago
Delta
Wed, Oct 22 - Thu, Oct 30
STL
St. Louis
FCA
Kalispell
$256 Roundtrip, found 6 hours ago
$256
Roundtrip
found 6 hours ago
Select Delta flight, departing Wed, Oct 22 from St. Louis to Kalispell, returning Thu, Oct 30, priced at $256 found 6 hours ago

Find the cheapest month to fly from St. Louis (STL) to Kalispell (FCA)

August is typically the cheapest month to fly

From $218 - $598 per traveler.

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Glacier Park Intl. Airport (FCA) cost?
Grab a cheap one-way flight from $119 or cheap return flight from $242 from Lambert-St. Louis Intl. Airport (STL) to Glacier Park Intl. Airport (FCA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Glacier Park Intl. Airport (FCA)?
Flying in November is a great way to save, as it's the cheapest month for flights between STL and FCA. You'll usually find the lowest prices during off-peak months.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Glacier Park Intl. Airport (FCA)?
To find the cheapest airline that'll fly you from STL to FCA, use Expedia's filter tool. Customize your search based on what's important to you, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Glacier Park Intl. Airport (FCA)?
Nonstop flights from Lambert-St. Louis Intl. Airport (STL) to Glacier Park Intl. Airport (FCA) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from STL to FCA?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Glacier Park Intl. Airport (FCA)?
To reach Glacier Park Intl. Airport (FCA) on schedule, book a flight that leaves Lambert-St. Louis Intl. Airport (STL) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Glacier Park Intl. Airport (FCA) last-minute?
Last-minute fares from STL to FCA are generally more expensive. For the lowest rates, start looking for flights well in advance. That being said, if you can play around with your travel dates, it's possible to find a cheap ticket right before your trip.
Is it cheaper to book a STL to FCA flight and hotel package?
Securing a STL to FCA flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Pick from our extensive range of hotels and then add activities, car rentals and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Glacier Park Intl. Airport (FCA)?
If you reserved your STL to FCA flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of fare you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you want more information.

Travel information

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Glacier Park Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$242
Distance
1358 mi

Book with confidence

Book with confidence

St. Louis to Kalispell Flights

The cheapest times to fly from St. Louis to Kalispell

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Kalispell are during the month of November. You can find some of the cheapest flights from St. Louis to Kalispell with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Kalispell

Sunday is one of the best days to book for cheap flights from St. Louis to Kalispell: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to Kalispell

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Kalispell in 2025. You can also book with separate airlines for your outbound and return journeys, from $119 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Kalispell flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Kalispell airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

St. Louis to Kalispell Flights

Explore a world of travel with Expedia

Explore a world of travel with Expedia

*Available to One Key members.