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Kalispell

$124+ Cheap flights from St. Louis to Kalispell (STL - FCA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/9. Fares are subject to change and may not be available on all flights or dates of travel.
STL — FCA
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Kalispell Glacier Park are usually found in December or April, booked 81 days in advance, depart on a Wednesday or Tuesday and return on a Friday

Cheap flight deals from St. Louis to Kalispell

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Kalispell (FCA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$242
(United Airlines)

One-way from

$124
(United Airlines)

Popular in

November

Cheapest in

December

Average price

$453
From Lambert-St Louis to Kalispell Glacier Park
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One-way flight from Lambert-St Louis to Kalispell Glacier Park
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High demand for flights, 1% potential price rise
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Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from St. Louis to Kalispell

Cheapest flights from St. Louis to Kalispell
Explore the most affordable flight options available from St. Louis to Kalispell. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/124:55 pmSTL - FCA
1 stop5h 49mUnited Airlines
Wed 11/196:10 amFCA - STL
1 stop5h 29mUnited Airlines
Deal found 9/10$242
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/254:51 pmSTL - FCA
1 stop25h 07mMultiple Airlines
Sun 11/25:48 pmFCA - STL
2 stops16h 36mMultiple Airlines
Deal found 9/10$291
This American Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/257:16 amSTL - FCA
1 stop6h 22mAmerican Airlines
Sat 11/11:08 pmFCA - STL
1 stop8h 00mAmerican Airlines
Deal found 9/10$325
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/255:15 amSTL - FCA
2 stops11h 12mUnited Airlines
Sat 11/12:38 pmFCA - STL
1 stop6h 11mUnited Airlines
Deal found 9/10$330
This Delta deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/255:30 pmSTL - FCA
1 stop6h 39mDelta
Sun 11/25:20 amFCA - STL
1 stop7h 19mDelta
Deal found 9/10$332
This United Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2712:25 pmSTL - FCA
2 stops10h 06mUnited Airlines
Sat 10/45:06 pmFCA - STL
1 stop5h 52mUnited Airlines
Deal found 9/11$337
This Alaska Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/266:30 pmSTL - FCA
1 stop18h 57mAlaska Airlines
Tue 9/304:22 pmFCA - STL
1 stop21h 17mAlaska Airlines
Deal found 9/11$338
This Hawaiian Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/276:00 amSTL - FCA
1 stop7h 27mHawaiian Airlines
Sat 10/42:32 pmFCA - STL
1 stop8h 31mHawaiian Airlines
Deal found 9/10$363
This Alaska Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/236:33 amSTL - FCA
1 stop6h 49mAlaska Airlines
Tue 10/281:06 pmFCA - STL
2 stops25h 12mAlaska Airlines
Deal found 9/11$376
This Alaska Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/276:00 amSTL - FCA
1 stop7h 27mAlaska Airlines
Sat 10/41:07 pmFCA - STL
2 stops9h 56mAlaska Airlines
Deal found 9/10$382

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Kalispell that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from St. Louis to Kalispell that are best for you.

Fly from

St. Louis

Fly to

Kalispell

Route

Depart

Return

Price

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Wed 11/12

4:55 pm-9:44 pm

1 stop5h 49m

Kalispell Glacier Park

Wed 11/19

6:10 am-12:39 pm

1 stop5h 29m

$242

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Sat 10/25

5:30 pm-11:09 pm

1 stop6h 39m

Kalispell Glacier Park

Sun 11/2

5:20 am-1:39 pm

1 stop7h 19m

$332

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Fri 10/24

6:00 am-12:43 pm

1 stop7h 43m

Kalispell Glacier Park

Sat 11/1

1:08 pm-10:08 pm

1 stop8h 00m

$332

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Sat 9/27

5:15 am-10:09 am

1 stop5h 54m

Kalispell Glacier Park

Sat 10/4

5:06 pm-11:58 pm

1 stop5h 52m

$332

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Sat 10/25

8:53 am-2:29 pm

1 stop6h 36m

Kalispell Glacier Park

Fri 10/31

5:20 am-1:39 pm

1 stop7h 19m

$332

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Fri 9/26

6:30 pm-12:27 pm

1 stop18h 57m

Kalispell Glacier Park

Tue 9/30

4:22 pm-2:39 pm

1 stop21h 17m

$338

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Sat 9/27

6:00 am-12:27 pm

1 stop7h 27m

Kalispell Glacier Park

Sat 10/4

2:32 pm-12:03 am

1 stop8h 31m

$363

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Sat 10/25

12:25 pm-9:31 pm

2 stops10h 06m

Kalispell Glacier Park

Sat 11/1

6:10 am-3:46 pm

2 stops8h 36m

$377

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Sat 9/27

6:00 am-12:27 pm

1 stop7h 27m

Kalispell Glacier Park

Sat 10/4

1:07 pm-12:03 am

2 stops9h 56m

$382

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Sun 9/14

7:23 am-12:38 pm

1 stop6h 15m

$371

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 11 results
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Best time to book a flight from St. Louis to Kalispell

Have a flexible travel schedule? Discover the best time to fly to Kalispell from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Kalispell

How far ahead should I book a flight from St. Louis to Kalispell?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Kalispell. Price data was last updated on August 29, 2025.

Booking 81 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to Kalispell. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from St. Louis to Kalispell?

Currently, October is the cheapest month in which you can book a flight from St. Louis to Kalispell (average of $373). Flying from St. Louis to Kalispell in July is currently the most expensive (average of $600). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to FCA?

Find hourly flight availability from St. Louis to Kalispell. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 25% on flights from St. Louis to Kalispell by exploring options for tickets in the afternoon.

How much does it cost to fly round-trip from St. Louis to Kalispell?

Reviews of airlines servicing Kalispell

Get insights into the airlines that provide service to Kalispell. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Kalispell. Reviews last updated September 11, 2025.
Read through reviews of airlines operating flights from St. Louis to Kalispell, such as Alaska Airlines, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
8.0
Very good
7,960 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
8,937 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Kalispell. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from St. Louis to Kalispell?

    There are many flights that can get you from St. Louis to Kalispell in 5h 49m. Fly via United Airlines, Delta, or American Airlines to get the fastest option. The distance from St. Louis to Kalispell is about 1358 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from St. Louis to Kalispell round-trip?

    Currently priced at $251, American Airlines will fly you from St. Louis to Kalispell and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Alaska Airlines and Delta - these airlines can fly you to your destination from $257 and $306, respectively. American Airlines is currently priced 48% below the average price you’ll pay for this route.

  • Can I find deals for flights from St. Louis to Kalispell that include hotel bookings?

    Yes. In addition to deals on St. Louis to Kalispell flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Kalispell?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Kalispell.

  • Can I find deals for business class flights from St. Louis to Kalispell?

    Yes. Cheapflights offers flight deals from St. Louis to Kalispell by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Kalispell?

    Currently, October is the cheapest month in which you can book a flight from St. Louis to Kalispell (average of $373). Flying from St. Louis to Kalispell in July is currently the most expensive (average of $600). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Kalispell?

Book flights to Kalispell if you plan to visit one of these locations
East Glacier Park

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Top 4 airlines flying from St. Louis to Kalispell

Discover the top 4 airlines that operate flights from St. Louis to Kalispell. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$251Average$476FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$257Average$497FlexibilityNo cancel feeOn-time75%
DeltaCheapest$306Average$432FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$330Average$545FlexibilityNo cancel feeOn-time69%

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