Cheap Flights from Kalispell (FCA) to St. Louis (SUS)

Popular airlines from Glacier Park Intl. Airport (FCA) to St. Louis, MO (SUS-Spirit of St. Louis)

Frequently asked questions

How much does a flight from Glacier Park Intl. Airport (FCA) to Spirit of St. Louis Airport (SUS) cost?
Secure a cheap one-way flight or cheap return flight from Glacier Park Intl. Airport (FCA) to Spirit of St. Louis Airport (SUS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Glacier Park Intl. Airport (FCA) to Spirit of St. Louis Airport (SUS)?
Flying in can help you save, as it's the cheapest month for flights between FCA and SUS. You'll usually find the lowest fares during off-peak months.
What is the cheapest airline that flies from Glacier Park Intl. Airport (FCA) to Spirit of St. Louis Airport (SUS)?
Use the filters on Expedia to compare airlines and find the cheapest carrier that'll fly you from FCA to SUS. Then, sort your results by "Price (lowest to highest)" to snag the best deal available.
How many flights per day from Glacier Park Intl. Airport (FCA) to Spirit of St. Louis Airport (SUS)?
Direct flights from Glacier Park Intl. Airport (FCA) to Spirit of St. Louis Airport (SUS) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from FCA to SUS?
You'll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Glacier Park Intl. Airport (FCA) to Spirit of St. Louis Airport (SUS)?
To touch down at Spirit of St. Louis Airport (SUS) on schedule, select a flight that leaves from Glacier Park Intl. Airport (FCA) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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 Glacier Park Intl. Airport (FCA) to Spirit of St. Louis Airport (SUS) last-minute?
Last-minute bookings from FCA to SUS are generally more expensive. To lock in the lowest prices, start searching for flights early. That said, if you're flexible with your travel dates, it's possible to find a cheap fare right before your journey.
Is it cheaper to book a FCA to SUS flight and hotel package?
Booking a FCA to SUS flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Pick from our impressive range of stays and then add car rentals, flights and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Glacier Park Intl. Airport (FCA) to Spirit of St. Louis Airport (SUS)?
In most instances, you can modify or cancel your FCA to SUS flight. However, additional charges may apply, especially if your booking was made more than 24 hours ago. Check your itinerary for the airline's guidelines and fees on flight changes, or if you need more information, go to our Customer Service portal.

Travel information

Origin airport
Glacier Park Intl.
Destination airport
Spirit of St. Louis
Distance
1350 mi

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Kalispell to St. Louis Flights

The cheapest times to fly from Kalispell to St. Louis

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 Kalispell to St. Louis are during the month of . You can find some of the cheapest flights from Kalispell to St. Louis with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Kalispell to St. Louis: 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 Kalispell to St. Louis

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 Kalispell to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from 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 Kalispell to St. Louis 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 Kalispell to St. Louis 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.

 

Kalispell to St. Louis Flights

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*Available to One Key members.