CA $204 Cheap Flights from Kalispell (FCA) to St. Louis (STL)

View CA $204 flight on Mon, Jun 8, 2026Opens in a new window

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

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Cheap flights from Kalispell (FCA) to St. Louis (STL)

Prices were available within the past 7 days and start at CA $204 for one-way flights and CA $404 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, Oct 28 - Mon, Nov 16
FCA
Kalispell
STL
St. Louis
CA $404 Roundtrip, found 23 hours ago
CA $404
Roundtrip
found 23 hours ago
Select Alaska Airlines flight, departing Wed, Oct 28 from Kalispell to St. Louis, returning Mon, Nov 16, priced at CA $404 found 23 hours ago
Delta
Tue, Oct 20 - Fri, Nov 6
FCA
Kalispell
STL
St. Louis
CA $404 Roundtrip, found 23 hours ago
CA $404
Roundtrip
found 23 hours ago
Select Delta flight, departing Tue, Oct 20 from Kalispell to St. Louis, returning Fri, Nov 6, priced at CA $404 found 23 hours ago
Delta
Fri, Oct 30 - Fri, Nov 13
FCA
Kalispell
STL
St. Louis
CA $413 Roundtrip, found 23 hours ago
CA $413
Roundtrip
found 23 hours ago
Select Delta flight, departing Fri, Oct 30 from Kalispell to St. Louis, returning Fri, Nov 13, priced at CA $413 found 23 hours ago
Alaska Airlines
Fri, Oct 23 - Sat, Nov 7
FCA
Kalispell
STL
St. Louis
CA $418 Roundtrip, found 23 hours ago
CA $418
Roundtrip
found 23 hours ago
Select Alaska Airlines flight, departing Fri, Oct 23 from Kalispell to St. Louis, returning Sat, Nov 7, priced at CA $418 found 23 hours ago
Alaska Airlines
Fri, Oct 23 - Tue, Nov 10
FCA
Kalispell
STL
St. Louis
CA $431 Roundtrip, found 23 hours ago
CA $431
Roundtrip
found 23 hours ago
Select Alaska Airlines flight, departing Fri, Oct 23 from Kalispell to St. Louis, returning Tue, Nov 10, priced at CA $431 found 23 hours ago
Delta
Tue, Oct 20 - Mon, Nov 9
FCA
Kalispell
STL
St. Louis
CA $460 Roundtrip, found 23 hours ago
CA $460
Roundtrip
found 23 hours ago
Select Delta flight, departing Tue, Oct 20 from Kalispell to St. Louis, returning Mon, Nov 9, priced at CA $460 found 23 hours ago
Delta
Fri, Sep 4 - Mon, Sep 21
FCA
Kalispell
STL
St. Louis
CA $469 Roundtrip, found 23 hours ago
CA $469
Roundtrip
found 23 hours ago
Select Delta flight, departing Fri, Sep 4 from Kalispell to St. Louis, returning Mon, Sep 21, priced at CA $469 found 23 hours ago
Alaska Airlines
Thu, Sep 24 - Mon, Sep 28
FCA
Kalispell
STL
St. Louis
CA $486 Roundtrip, found 23 hours ago
CA $486
Roundtrip
found 23 hours ago
Select Alaska Airlines flight, departing Thu, Sep 24 from Kalispell to St. Louis, returning Mon, Sep 28, priced at CA $486 found 23 hours ago
United
Wed, Sep 23 - Mon, Sep 28
FCA
Kalispell
STL
St. Louis
CA $527 Roundtrip, found 23 hours ago
CA $527
Roundtrip
found 23 hours ago
Select United flight, departing Wed, Sep 23 from Kalispell to St. Louis, returning Mon, Sep 28, priced at CA $527 found 23 hours ago
American Airlines
Tue, Sep 22 - Sat, Sep 26
FCA
Kalispell
STL
St. Louis
CA $583 Roundtrip, found 23 hours ago
CA $583
Roundtrip
found 23 hours ago
Select American Airlines flight, departing Tue, Sep 22 from Kalispell to St. Louis, returning Sat, Sep 26, priced at CA $583 found 23 hours ago

Frequently asked questions

How much does a flight from Kalispell, MT (FCA-Glacier Park Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) cost?
One-way flights typically cost between $687 and $2,500 and return flights often range between $687 and $2,500. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Anaa (AAA) to Toronto, ON (YYZ-Pearson Intl.) ticket fares go up or down.
What is the cheapest month to fly from Kalispell, MT (FCA-Glacier Park Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
January is typically the cheapest month to fly from Kalispell, MT (FCA-Glacier Park Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.), with average round-trip fares around 749 CAD. This is about 26% lower than the average price throughout the year. January sees lower prices because it falls after the holiday travel rush, when demand drops and airlines compete for bookings. Other cheap months to fly from Kalispell, MT (FCA-Glacier Park Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) include May and November.
How do I find cheap flights from Kalispell, MT (FCA-Glacier Park Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
To find a cheap flight from Kalispell, MT (FCA-Glacier Park Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Kalispell, MT (FCA-Glacier Park Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Based on booking data from the past year, the best time to fly from Kalispell, MT (FCA-Glacier Park Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) for a good balance of price and availability is a bit varied. You'll find the cheapest flights in January or May, with average round-trip prices around 749 CAD. March is the most popular month for this route, meaning there are plenty of flight options available, though prices might be a little higher. If you're looking for the absolute lowest fare, aim for January or May, but if having lots of choices is key, March is a great bet.
How many flights per day from Kalispell, MT (FCA-Glacier Park Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
There are approximately 13 connecting flights per day from Kalispell, MT (FCA-Glacier Park Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.). Some common connection points include Seattle - Tacoma Intl. (SEA), Denver Intl. (DEN), and Portland Intl. (PDX).
What is the earliest flight from Kalispell, MT (FCA-Glacier Park Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The earliest flight from Kalispell, MT (FCA-Glacier Park Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) typically departs at approximately 5:00 AM local time, operated by Delta. This is a seasonal service active in February and March. An early departure like this can help maximize your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Kalispell, MT (FCA-Glacier Park Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
You'll typically find the most flights from Kalispell, MT (FCA-Glacier Park Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) on a Saturday, with around 12 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Delta Air Lines, Alaska Airlines, and United Airlines. Flight schedules are consistent throughout the week.
What are the most popular departure times for flights from Kalispell, MT (FCA-Glacier Park Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The most popular departure times for flights from Kalispell, MT (FCA-Glacier Park Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) are between 12pm and 3pm. About 28% of passengers prefer this time. Many major carriers, including United Airlines, Delta and American Airlines, offer flights during this window. This timing works well for many travelers as it allows for a morning start and an afternoon arrival, giving you time to settle in at your destination.
How long does it take to fly from Kalispell, MT (FCA-Glacier Park Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
A flight from FCA to STL with a layover takes around 6 hours 20 minutes, with the route covering approximately 1,359 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Kalispell, MT (FCA-Glacier Park Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Select the "Business class" and "First class" filters when looking for FCA to STL flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Kalispell, MT (FCA-Glacier Park Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight with Expedia?
It's easy to earn miles on a Kalispell, MT (FCA-Glacier Park Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for St. Louis from Glacier Park Intl. (FCA)?
If you're planning to travel to St. Louis from Glacier Park Intl. (FCA), you can fly directly into Lambert-St. Louis Intl. (STL) Some flights may connect through major hubs like Denver Intl. (DEN), Seattle - Tacoma Intl. (SEA), Portland Intl. (PDX) before reaching St. Louis. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Kalispell, MT (FCA-Glacier Park Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) at the last minute?
Typically, booking a last minute flight from Kalispell, MT (FCA-Glacier Park Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Kalispell, MT (FCA-Glacier Park Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight and hotel package?
Securing a Kalispell, MT (FCA-Glacier Park Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Kalispell, MT (FCA-Glacier Park Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
If you booked your Kalispell, MT (FCA-Glacier Park Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) 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 ticket you have, 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'd like more information.

Travel information

Origin airport
Glacier Park Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, United
Roundtrip price
CA $404
Distance
2174 km

Book with confidence

Kalispell to St. Louis Flights

The easy way to book your flights from Kalispell to St. Louis 

With Expedia, it’s simple to find and book flights to St. Louis from Kalispell whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Lambert-St. Louis Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Kalispell to St. Louis today, tomorrow, or this week.  

 

Save dollars with cheap flights from Glacier Park Intl., FCA to Lambert-St. Louis Intl., STL 

Sort your search results by price to find great deals on your flight from Kalispell to St. Louis—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to St. Louis from Kalispell currently is just CA $404 rising to CA $583.  

Here are more money-saving tips: 

  • Fly in October when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to St. Louis  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to St. Louis from Kalispell 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to St. Louis with Expedia today.

Kalispell to St. Louis Flights

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