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Cheap flights from St Louis to Kalispell

Compare St Louis to Kalispell flight deals

Find the cheapest month or even day of the year to fly to Kalispell

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Flight deals from St Louis Airport to Kalispell Airport

Looking for a cheap last-minute deal or the best return flight from St Louis Airport to Kalispell Airport? If you want to travel next month, return fares start from P18,611. Find the lowest prices on one-way and return tickets right here.
Kalispell.P17,679 per passenger.Departing Wed, 6 May, returning Wed, 13 May.Return flight with Delta.Outbound indirect flight with Delta, departs from St Louis on Wed, 6 May, arriving in Kalispell.Inbound indirect flight with Delta, departs from Kalispell on Wed, 13 May, arriving in St Louis.Price includes taxes and charges.From P17,679, select.
Kalispell.P18,485 per passenger.Departing Fri, 3 Apr, returning Mon, 6 Apr.Return flight with Delta.Outbound indirect flight with Delta, departs from St Louis on Fri, 3 Apr, arriving in Kalispell.Inbound indirect flight with Delta, departs from Kalispell on Mon, 6 Apr, arriving in St Louis.Price includes taxes and charges.From P18,485, select.
Kalispell.P19,183 per passenger.Departing Sun, 23 Aug, returning Thu, 27 Aug.Return flight with United.Outbound indirect flight with United, departs from St Louis on Sun, 23 Aug, arriving in Kalispell.Inbound indirect flight with United, departs from Kalispell on Thu, 27 Aug, arriving in St Louis.Price includes taxes and charges.From P19,183, select.
Kalispell.P23,614 per passenger.Departing Mon, 7 Sep, returning Mon, 14 Sep.Return flight with United.Outbound indirect flight with United, departs from St Louis on Mon, 7 Sep, arriving in Kalispell.Inbound indirect flight with United, departs from Kalispell on Mon, 14 Sep, arriving in St Louis.Price includes taxes and charges.From P23,614, select.
Kalispell.P31,345 per passenger.Departing Mon, 1 Jun, returning Mon, 8 Jun.Return flight with United.Outbound indirect flight with United, departs from St Louis on Mon, 1 Jun, arriving in Kalispell.Inbound indirect flight with United, departs from Kalispell on Mon, 8 Jun, arriving in St Louis.Price includes taxes and charges.From P31,345, select.
Kalispell.P40,671 per passenger.Departing Sun, 19 Jul, returning Fri, 31 Jul.Return flight with United.Outbound indirect flight with United, departs from St Louis on Sun, 19 Jul, arriving in Kalispell.Inbound indirect flight with United, departs from Kalispell on Fri, 31 Jul, arriving in St Louis.Price includes taxes and charges.From P40,671, select.
Kalispell.P42,015 per passenger.Departing Fri, 31 Jul, returning Thu, 6 Aug.Return flight with United.Outbound indirect flight with United, departs from St Louis on Fri, 31 Jul, arriving in Kalispell.Inbound indirect flight with United, departs from Kalispell on Thu, 6 Aug, arriving in St Louis.Price includes taxes and charges.From P42,015, select.
Kalispell.P61,788 per passenger.Departing Tue, 29 Dec, returning Sun, 3 Jan.Return flight with Delta.Outbound indirect flight with Delta, departs from St Louis on Tue, 29 Dec, arriving in Kalispell.Inbound indirect flight with Delta, departs from Kalispell on Sun, 3 Jan, arriving in St Louis.Price includes taxes and charges.From P61,788, select.

Find the cheapest month to fly from St Louis to Kalispell

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like St Louis to Kalispell flights are currently cheapest in May.
Mar
Find prices
Apr
from P18,485
May
from P17,679
Jun
from P31,345
Jul
from P40,671
Aug
from P19,183
Sep
from P23,614
Oct
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Nov
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Dec
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Jan
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Feb
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St Louis to Kalispell: Alternative routes

Compare routes from St Louis to Kalispell below. You may find an airport to fly into that's cheaper, faster, or easier than Kalispell.

Kalispell

13km from central Kalispell
ClosestCheapest
from P17,799
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St Louis to Kalispell: Flight information

The things to know before you go.
Cheapest flight foundP17,799
Cheapest month to flyMay

Finding cheap flights from St Louis to Kalispell: Frequently asked questions

The best price we found for a return flight from St Louis to Kalispell is P17,799. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from St Louis to Kalispell. But we found flights with one or more stops from P17,799.
As of March 2026, there are no flights flying from St Louis to Kalispell.
The cheapest month to fly from St Louis to Kalispell is usually May.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from St Louis Airport to Kalispell Airport on Wednesday, 6 May 2026.
No airlines currently offer direct flights between St Louis Airport and Kalispell Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Kalispell but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Kalispell is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Delta offers the cheapest flight tickets to Kalispell.

Flying from Lambert-St. Louis International Airport (STL) to Glacier Park International Airport (FCA): what you need to know

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are golden rules for hassle-free flying. Show up at the airport on time to board your STL to FCA flight.

  • Be prepared for longer queues in popular months such as July. Arriving up to four hours in advance for an international flight and two hours for domestic departures will give you ample time for security and boarding.

  • We make it simple to book a flight with a stopover. To see your options for tickets from Lambert-St. Louis International Airport to Glacier Park International Airport, deselect 'Direct flights only.' Then, choose a flight offering a stop long enough to visit the city of your choice. Stopovers between STL and FCA include:

    • Denver International Airport

    • Minneapolis-St. Paul International Airport

    • O'Hare International Airport

How to find the cheapest flights from Lambert-St. Louis International Airport (STL) to Glacier Park International Airport (FCA)

  • The cheapest price we've seen for a one-way Lambert-St. Louis International Airport to Glacier Park International Airport flight is P9,873. A return plane ticket is currently P17,799. Depending on the availability when you book, these fares could change.

  • To find cheap tickets from STL to FCA, book as early as you can. Airlines typically offer lower fares when flights are first released.

  • If you're willing to be flexible with your travel plans, use the 'Whole month' tool. It'll show you the cheapest price across the month when looking for a flight from Lambert-St. Louis International Airport to Glacier Park International Airport.

  • You don't need to check every day to find out if fares have gone down when you create a Price Alert. We'll send you an update as soon as there's a better deal on cheap flights from STL to FCA.

  • Tailor your trip with filters. Pick your arrival and departure times, airlines and total journey duration. You can also sort results by 'Best,' 'Fastest' or 'Cheapest' flights from Lambert-St. Louis International Airport to Glacier Park International Airport.

Handy information about Lambert-St. Louis International Airport (STL)

  • The address for STL is 10701 Lambert International Blvd..

  • When it comes to Lambert-St. Louis International Airport's on-time performance, 78.04% of flights arrive within the scheduled timeframe.

  • To reach Lambert-St. Louis International Airport from central St Louis, it'll take about 20 minutes if you're going by car. This depends on traffic, however. It's approximately 26 kilometres from the airport to the city centre.

  • You can expect a trip time of about 35 minutes when using public transport.

  • Get your travels off to a relaxed start by staying near STL. Whether you're boarding an early flight from Lambert-St. Louis International Airport to Glacier Park International Airport or just don't want to be rushed, these hotels are perfect:

Arriving at Glacier Park International Airport (FCA)

Getting from Glacier Park International Airport (FCA) to central Kalispell

  • FCA is located at 4170 Highway 2 East.

  • Glacier Park International Airport is approximately 16 kilometres from the centre of Kalispell. The drive time takes about 20 minutes.

When to fly to Glacier Park International Airport (FCA)

  • The quietest month for a flight from Lambert-St. Louis International Airport to Glacier Park International Airport is November, while July is the busiest. Pick the best time to visit Kalispell based on whether you prefer a more relaxed vibe or a faster pace.

  • The warmest month in Kalispell is July, with the temperature ranging between 7ºC (45ºF) and 32ºC (90ºF). Book your flights from Lambert-St. Louis International Airport to Glacier Park International Airport in this month if this is the type of weather you enjoy.

  • February sees average temperatures of between -17ºC (1ºF) and 1ºC (34ºF). Search for cheap tickets from STL to FCA sometime then if you'd rather travel in cooler conditions.

Explore more of United States

  • Spokane is just one of the many places in United States waiting to be explored once you've seen Kalispell. Around 241 kilometres away to the west, check out popular attractions including Manito Park, Northwest Museum of Arts & Culture and Spokane Falls.

  • Around 225 kilometres west of Kalispell, Spokane Valley is another favourite stop in United States. Experience the best of this destination with a visit to Splash Down Waterpark, The Ref Sports Bar and Bead Lake Loop.

Plan the rest of your trip from St Louis to Kalispell

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.