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

Currently priced at $310, Delta will fly you from St. Louis to Kalispell and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and American Airlines - these airlines can fly you to your destination from $349 and $363, respectively. Delta is currently priced 41% below the average price you’ll pay for this route.

What is the cheapest day to fly from St. Louis to Kalispell?

Travelers seeking maximum savings on their St. Louis to Kalispell flight should consider departing on Sunday afternoons when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular airlines that fly from St. Louis to Kalispell?

When booking a flight from St. Louis to Kalispell, you may want to consider flying on American Airlines, Alaska Airlines or Delta as they are the most popular for this route.

What is the cheapest day to fly round-trip from St. Louis to Kalispell?

Users have found that leaving on a Tuesday can be a cost-effective option. It’s possible to save up to 35% on your flight compared to booking on days when demand is much higher.

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

To save up to 100% on this flight, we recommend booking at least 22 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from St. Louis to Kalispell from $596 1-2 weeks out and tickets from $596 for flights departing within the next 72 hours.

What is the cheapest month to fly from St. Louis to Kalispell?

December is one of the best times of the year to fly to Kalispell from St. Louis. Prices for December average $527 per person but you can even find prices for as low as $303. The most expensive prices can be found in the month of November. Opting for a December flight can save you 28% on your journey compared to booking in November

Most accurate provider : When it comes to deals on St. Louis-Kalispell flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Kalispell flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Kalispell flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on St. Louis-Kalispell 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 St. Louis-Kalispell flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

$153+ Flights from St. Louis to Kalispell

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from St. Louis to Kalispell with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Lambert-St Louis to Kalispell Glacier Park are usually found in December or January, booked 22 days in advance, depart on a Wednesday or Tuesday and return on a Friday

Cheap flight deals from St. Louis to Kalispell

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$310 (Delta)
Popular in	November
Cheapest in	December
Average price	$455

Provider with most accurate pricing for Lambert-St Louis-Kalispell Glacier Park flight deals.

Search Deals

Provider most trusted by Cheapflights users for Lambert-St Louis-Kalispell Glacier Park flights.

Search Deals

From Lambert-St Louis to Kalispell Glacier Park

Search Deals

High demand for flights, 6% potential price rise

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

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 April 4, 2025.

Tue 6/172:15 pmSTL - FCA

2 stops10h 40mDelta

Tue 6/246:11 pmFCA - STL

1 stop5h 25mDelta

Deal found 4/4

$310

Sat 4/198:48 amSTL - FCA

1 stop5h 44mUnited Airlines

Wed 4/236:10 amFCA - STL

1 stop5h 37mUnited Airlines

Deal found 4/4

$349

Tue 6/175:31 amSTL - FCA

1 stop6h 23mAmerican Airlines

Tue 6/243:27 pmFCA - STL

1 stop6h 52mAmerican Airlines

Deal found 4/3

$363

Sat 8/167:32 pmSTL - FCA

2 stops18h 48mAlaska Airlines

Wed 8/206:29 amFCA - STL

1 stop6h 48mAlaska Airlines

Deal found 4/3

$463

Wed 7/303:24 pmSTL - FCA

1 stop9h 35mHawaiian Airlines

Sun 8/36:33 amFCA - STL

1 stop6h 53mHawaiian Airlines

Deal found 4/2

$665

Sat 8/212:15 pmSTL - FCA

3 stops22h 35mMultiple Airlines

Sat 8/93:39 pmFCA - STL

3 stops15h 10mMultiple Airlines

Deal found 4/2

$797

Best flights from St. Louis to Kalispell
Discover carefully curated flight deals from St. Louis to Kalispell that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 4, 2025.

Tue 6/172:15 pmSTL - FCA

2 stops10h 40mDelta

Tue 6/246:11 pmFCA - STL

1 stop5h 25mDelta

Deal found 4/4

$310

Sat 4/198:48 amSTL - FCA

1 stop5h 44mUnited Airlines

Wed 4/236:10 amFCA - STL

1 stop5h 37mUnited Airlines

Deal found 4/4

$349

Tue 6/175:31 amSTL - FCA

1 stop6h 23mAmerican Airlines

Tue 6/243:27 pmFCA - STL

1 stop6h 52mAmerican Airlines

Deal found 4/3

$363

Wed 4/96:44 amSTL - FCA

1 stop9h 20mAlaska Airlines

Wed 4/163:44 pmFCA - STL

1 stop7h 15mAlaska Airlines

Deal found 4/2

$469

Last-minute flights from St. Louis to Kalispell
Discover last-minute flight deals from St. Louis to Kalispell. Data last updated April 4, 2025 and is based on user searches.

Wed 4/96:00 amSTL - FCA

1 stop7h 54mDelta

Wed 4/165:25 amFCA - STL

2 stops10h 01mDelta

Deal found 4/2

$445

Thu 4/106:44 amSTL - FCA

1 stop9h 20mAlaska Airlines

Wed 4/166:33 amFCA - STL

1 stop6h 42mAlaska Airlines

Deal found 4/2

$439

Sat 4/195:00 pmSTL - FCA

1 stop7h 21mDelta

Wed 4/305:25 amFCA - STL

1 stop7h 03mDelta

Deal found 4/4

$312

Sat 4/198:48 amSTL - FCA

1 stop5h 44mUnited Airlines

Wed 4/236:10 amFCA - STL

1 stop5h 37mUnited Airlines

Deal found 4/4

$349

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Kalispell that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Tue 6/17

2:15 pm-11:55 pm

2 stops10h 40m

Kalispell Glacier Park

Tue 6/24

6:11 pm-12:36 am

1 stop5h 25m

$310

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Sat 4/19

8:48 am-1:32 pm

1 stop5h 44m

Kalispell Glacier Park

Wed 4/23

6:10 am-12:47 pm

1 stop5h 37m

$349

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Tue 6/17

5:31 am-10:54 am

1 stop6h 23m

Kalispell Glacier Park

Tue 6/24

3:27 pm-11:19 pm

1 stop6h 52m

$363

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Sat 8/16

7:32 pm-1:20 pm

2 stops18h 48m

Kalispell Glacier Park

Wed 8/20

6:29 am-2:17 pm

1 stop6h 48m

$463

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Wed 7/30

3:24 pm-11:59 pm

1 stop9h 35m

Kalispell Glacier Park

Sun 8/3

6:33 am-2:26 pm

1 stop6h 53m

$665

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Sat 8/2

12:15 pm-9:50 am

3 stops22h 35m

Kalispell Glacier Park

Sat 8/9

3:39 pm-7:49 am

3 stops15h 10m

$797

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Tue 7/8

5:30 pm-11:48 pm

1 stop7h 18m

$153

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Wed 7/9

5:15 am-10:03 am

1 stop5h 48m

$386

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/3

Compare providers for flights from St. Louis to Kalispell

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Kalispell in April.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust 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 St. Louis-Kalispell flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Kalispell flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Kalispell flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on St. Louis-Kalispell 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 St. Louis-Kalispell 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 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?

Booking 21 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 $637). 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?

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.

Rainfall in Kalispell by month

In terms of precipitation, rainfall in Kalispell ranges from 1.0 - 2.6 inches per month. June is typically the wettest month, when rainfall can reach 2.6 in. February is typically the driest time to visit Kalispell when rainfall is around 1.0 in.

Temperature in Kalispell by month

If weather is an important factor for your trip to Kalispell, 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 64.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Kalispell

To help decide which airline to fly from St. Louis to Kalispell, see what other customers have to say about Alaska Airlines, Delta and United Airlines. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

9,836 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines

8.0

Very good

9,836 reviews

Alaska Airlines

8.0

Very good

9,836 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta

8.0

Very good

7,897 reviews

Alaska Airlines

8.0

Very good

9,836 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines

7.4

Good

8,618 reviews

Alaska Airlines

8.0

Very good

9,836 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

9,836 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

What are the cheapest airlines flying from St. Louis to Kalispell round-trip?
Currently priced at $310, Delta will fly you from St. Louis to Kalispell and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and American Airlines - these airlines can fly you to your destination from $349 and $363, respectively. Delta is currently priced 41% 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 $637). 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

East Glacier Park

Polson

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for St. Louis to Kalispell

Kansas City to Kalispell flights

Kansas City to Bozeman flights

St. Louis to Bozeman flights

Kansas City to Missoula flights

St. Louis to Missoula flights

Springfield to Bozeman flights

Kansas City to Billings flights

St. Louis to Billings flights

St. Louis to Great Falls flights

Springfield to Kalispell flights

St. Louis to Helena flights

Kansas City to Great Falls flights

Springfield to Billings flights

Springfield to Missoula flights

Springfield to Great Falls flights

St. Louis to Cody flights

St. Louis to West Yellowstone flights

Kansas City to West Yellowstone flights

St. Louis to Butte flights

Kansas City to Helena flights

Springfield to Helena flights

Springfield to Butte flights

Springfield to West Yellowstone flights

Kansas City to Cody flights

Joplin to Missoula flights

Joplin to Bozeman flights

Columbia to West Yellowstone flights

Columbia to Missoula flights

Columbia to Bozeman flights

Other flights to Kalispell

Top 4 airlines flying from St. Louis to Kalispell

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$303	Average$472	FlexibilityNo cancel fee	On-timeN/A
Alaska Airlines	Cheapest$311	Average$507	FlexibilityNo cancel fee	On-time75%
United Airlines	Cheapest$354	Average$600	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$378	Average$572	FlexibilityNo cancel fee	On-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$153+ 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 7/8. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Kalispell with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Lambert-St Louis to Kalispell Glacier Park are usually found in December or January, booked 22 days in advance, depart on a Wednesday or Tuesday and return on a Friday

Cheap flight deals from St. Louis to Kalispell

Most accurate provider

Most trusted provider

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from St. Louis to Kalispell

Cheapest flights from St. Louis to KalispellExplore 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 April 4, 2025.

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 April 4, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Kalispell that are best for you.

Compare providers for flights from St. Louis to Kalispell

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 St. Louis to Kalispell in April.

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.

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 March 28, 2025.

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

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 April 4, 2025.

Rainfall in Kalispell by month

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

Temperature in Kalispell by month

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

Reviews of airlines servicing Kalispell

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.

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

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

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

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

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

Traveling to a place near St. Louis?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Kalispell

See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from St. Louis to Kalispell

100% Free

Book with Flexibility

Travel Smart

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 April 4, 2025.