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$309+ Cheap flights from Kalispell to St. Louis (FCA - STL)

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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
FCA — STL
Apr 16 — Apr 231
Wed 4/16
Wed 4/23
1 adult, Economy
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Cheap flight deals from Kalispell to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Kalispell (FCA) to St. Louis (STL). 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 April 11, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$319
(Delta)

One-way from

$309
(Mytrip)

Popular in

April

Cheapest in

December

Average price

$711
Provider with most accurate pricing for Kalispell Glacier Park-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for Kalispell Glacier Park-Lambert-St Louis flights.
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From Kalispell Glacier Park to Lambert-St Louis
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One-way flight from Kalispell Glacier Park to Lambert-St Louis
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High demand for flights, 0% potential price rise
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Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Kalispell to St. Louis

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

This Delta deal was found by Cheapflights users on 4/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/62:15 pmFCA - STL
1 stop8h 11mDelta
Mon 6/96:30 amSTL - FCA
1 stop8h 28mDelta
Deal found 4/11$319
This American Airlines deal was found by Cheapflights users on 4/10. 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.
Fri 6/64:52 pmFCA - STL
1 stop6h 02mAmerican Airlines
Mon 6/96:00 amSTL - FCA
1 stop11h 09mAmerican Airlines
Deal found 4/10$329
This Alaska Airlines deal was found by Cheapflights users on 4/10. 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.
Fri 6/66:32 pmFCA - STL
2 stops12h 36mAlaska Airlines
Mon 6/99:23 amSTL - FCA
2 stops15h 35mAlaska Airlines
Deal found 4/10$580
This Hawaiian Airlines deal was found by Cheapflights users on 4/10. 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.
Tue 4/156:33 amFCA - STL
1 stop6h 42mHawaiian Airlines
Fri 4/183:11 pmSTL - FCA
1 stop9h 32mHawaiian Airlines
Deal found 4/10$665
This United Airlines deal was found by Cheapflights users on 4/10. 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.
Tue 4/156:10 amFCA - STL
1 stop5h 37mUnited Airlines
Tue 4/154:45 pmSTL - FCA
1 stop6h 14mUnited Airlines
Deal found 4/10$705

Cheapflights Fare Finder

Customize your flight search to find flights from Kalispell to St. Louis 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 April 11, 2025.
Use the filters below to find and compare flights from Kalispell to St. Louis that are best for you.

Fly from

Kalispell

Fly to

St. Louis

Route

Depart

Return

Price

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Fri 6/6

2:15 pm-11:26 pm

1 stop8h 11m

Lambert-St Louis

Mon 6/9

6:30 am-1:58 pm

1 stop8h 28m

$319

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Fri 6/6

4:52 pm-11:54 pm

1 stop6h 02m

Lambert-St Louis

Mon 6/9

6:00 am-4:09 pm

1 stop11h 09m

$329

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Fri 6/6

6:32 pm-8:08 am

2 stops12h 36m

Lambert-St Louis

Mon 6/9

9:23 am-11:58 pm

2 stops15h 35m

$580

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Sun 4/20

9:48 pm-8:10 pm

3 stops21h 22m

$309

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Sun 4/20

3:44 pm-11:59 pm

1 stop7h 15m

$310

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Sun 4/20

5:25 am-4:26 pm

2 stops10h 01m

$316

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/9

Compare providers for flights from Kalispell to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Kalispell to St. Louis in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Kalispell-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Kalispell-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Kalispell-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Kalispell-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Kalispell-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Kalispell to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Kalispell 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 Kalispell to St. Louis

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

Currently, August is the cheapest month in which you can book a flight from Kalispell to St. Louis (average of $311). Flying from Kalispell to St. Louis in March is currently the most expensive (average of $356). 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 FCA to STL?

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

One of the essential ways to save on airfare from Kalispell to St. Louis is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 36% on airfare.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated April 11, 2025.
Alaska Airlines
8.0
Very good
9,851 reviews

Food

7.1

Entertainment

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,851 reviews
Alaska Airlines
8.0
Very good
9,851 reviews

Food

7.1

Entertainment

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,911 reviews
Alaska Airlines
8.0
Very good
9,851 reviews

Food

7.1

Entertainment

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Hawaiian Airlines
7.9
Good
2,365 reviews
Alaska Airlines
8.0
Very good
9,851 reviews

Food

7.1

Entertainment

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,851 reviews

Food

7.1

Entertainment

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Related info for your journey

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

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

    Delta, at $319, was found to be the cheapest airline from Kalispell to St. Louis.Alternate airlines to your destination round-trip include American Airlines and Alaska Airlines. Delta is 36% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Kalispell to St. Louis 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 Kalispell to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Kalispell to St. Louis (average of $311). Flying from Kalispell to St. Louis in March is currently the most expensive (average of $356). 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
Fenton
Maryland Heights
Fairview Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Glencoe
Alton
Farmington
Chesterfield

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Top 2 airlines flying from Kalispell to St. Louis

Discover the top 2 airlines that operate flights from Kalispell to St. Louis. 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 April 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$298Average$418FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$337Average$595FlexibilityNo cancel feeOn-time69%

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