$152 Cheap Alaska Airlines flights St. Louis (STL) to Kalispell (FCA)

Apply the “Price (lowest to highest)” filter on Expedia to look for cheap Alaska Airlines round-trip flights from $309 from STL to FCA. Affordable one-way tickets from $152 are also on offer.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines flights to Kalispell tend to be more affordable in the quieter months of January and December. Whether you’re after a one-way or round-trip ticket, you could score a better deal then.

To find cheap Alaska Airlines fares from Lambert-St. Louis Intl. Airport (STL) to Glacier Park Intl. Airport (FCA), start searching one to three months before your planned departure. Reserving domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also influence the cost. Sunday is typically the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your trip on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

To find out if there’s a direct journey from STL to FCA with Alaska Airlines or another airline, use our “Nonstop” filter when searching for flights.

To find the earliest departure from STL to FCA with Alaska Airlines, filter your results by “Early Morning” and “Morning.” Booking an early flight generally means you’re less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Take an Alaska Airlines flight from Lambert-St. Louis Intl. Airport (STL) to Kalispell, and you’ll probably arrive at Glacier Park Intl. Airport (FCA). This is the airline’s primary hub in this destination.

Flying from STL to FCA with Alaska Airlines means enjoying a host of benefits, including top-tier customer service and an excellent in-flight experience. Plus, when you book through Expedia, One Key™ members can earn OneKeyCash™* to redeem on select future travel purchases. That’s in addition to the Mileage Plan points you can earn with Alaska Airlines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Changes are often free within 24 hours of booking, but your airline may charge you after that time. For further information about modifying your flights, head to your “Trips,” select your flight and click on “Manage Booking.” If you want the freedom to adjust your plans without additional charges, tick the “Changes included” and “No cancel fee” filters when planning your trip.