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

Currently priced at $227, 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 Delta and United Airlines - these airlines can fly you to your destination from $258 and $339, respectively. American Airlines is currently priced 54% below the average price you’ll pay for this route.

What are the cheapest airlines to fly from St. Louis to Kalispell one-way?

For one-way options, check prices for Alaska Airlines. According to our data, you can fly for as low as $113. Users have also found prices from $114 and $129 on American Airlines and Delta, respectively.

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 103% on this flight, we recommend booking at least 39 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 $494 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 37% on your journey compared to booking in November

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.

$113+ Flights from St. Louis to Kalispell

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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.

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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 38 days in advance, depart on a Wednesday or Tuesday and return on a Friday

Cheap flight deals from St. Louis to Kalispell

Round-trip from	$227 (American Airlines)
One-way from	$113 (Alaska Airlines)
Popular in	November
Cheapest in	December
Average price	$518

From Lambert-St Louis to Kalispell Glacier Park

Search Deals

One-way flight from Lambert-St Louis to Kalispell Glacier Park

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High demand for flights, 2% potential price rise

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Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in June 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 June 12, 2025.

Tue 8/197:23 amSTL - FCA

1 stop6h 11mAmerican Airlines

Tue 8/263:49 pmFCA - STL

1 stop6h 25mAmerican Airlines

Deal found 6/11

$227

Mon 8/45:37 pmSTL - FCA

1 stop7h 14mDelta

Wed 8/136:11 pmFCA - STL

1 stop5h 27mDelta

Deal found 6/10

$258

Fri 9/2612:25 pmSTL - FCA

2 stops10h 06mUnited Airlines

Tue 9/305:06 pmFCA - STL

1 stop5h 52mUnited Airlines

Deal found 6/10

$328

Sat 10/43:57 pmSTL - FCA

1 stop9h 01mHawaiian Airlines

Fri 10/106:31 amFCA - STL

1 stop7h 24mHawaiian Airlines

Deal found 6/10

$341

Tue 8/196:45 amSTL - FCA

2 stops13h 35mAlaska Airlines

Tue 8/268:02 pmFCA - STL

2 stops21h 28mAlaska Airlines

Deal found 6/10

$376

Mon 7/711:28 amSTL - FCA

2 stops25h 57mMultiple Airlines

Tue 7/151:15 pmFCA - STL

3 stops20h 14mMultiple Airlines

Deal found 6/12

$377

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 June 12, 2025.

Tue 8/197:23 amSTL - FCA

1 stop6h 11mAmerican Airlines

Tue 8/263:49 pmFCA - STL

1 stop6h 25mAmerican Airlines

Deal found 6/11

$227

Mon 8/45:37 pmSTL - FCA

1 stop7h 14mDelta

Wed 8/136:11 pmFCA - STL

1 stop5h 27mDelta

Deal found 6/10

$258

Tue 7/86:00 amSTL - FCA

1 stop10h 31mUnited Airlines

Tue 7/155:14 pmFCA - STL

1 stop5h 45mUnited Airlines

Deal found 6/10

$339

Mon 7/2110:47 amSTL - FCA

2 stops26h 38mMultiple Airlines

Thu 7/2410:40 amFCA - STL

2 stops22h 12mMultiple Airlines

Deal found 6/10

$352

Tue 8/196:45 amSTL - FCA

2 stops13h 35mAlaska Airlines

Tue 8/268:02 pmFCA - STL

2 stops21h 28mAlaska Airlines

Deal found 6/10

$376

Tue 9/93:35 pmSTL - FCA

1 stop9h 24mHawaiian Airlines

Sun 9/146:39 amFCA - STL

1 stop7h 00mHawaiian Airlines

Deal found 6/11

$406

Last-minute flights from St. Louis to Kalispell
Discover last-minute flight deals from St. Louis to Kalispell. Data last updated June 12, 2025 and is based on user searches.

Tue 6/175:37 amSTL - FCA

1 stop6h 17mAmerican Airlines

Tue 6/243:27 pmFCA - STL

1 stop6h 52mAmerican Airlines

Deal found 6/10

$374

Tue 6/175:38 pmSTL - FCA

1 stop7h 08mDelta

Tue 6/247:00 amFCA - STL

1 stop6h 36mDelta

Deal found 6/11

$445

Tue 6/175:20 amSTL - FCA

2 stops11h 14mUnited Airlines

Tue 6/245:08 pmFCA - STL

1 stop5h 51mUnited Airlines

Deal found 6/10

$460

Thu 6/196:36 pmSTL - FCA

3 stops40h 23mMultiple Airlines

Sun 6/2210:40 amFCA - STL

2 stops22h 53mMultiple Airlines

Deal found 6/10

$885

Thu 6/196:41 amSTL - FCA

2 stops12h 39mAlaska Airlines

Sun 6/227:00 pmFCA - STL

2 stops27h 59mAlaska Airlines

Deal found 6/10

$1,333

Mon 7/77:15 pmSTL - FCA

1 stop6h 10mDelta

Tue 8/56:11 pmFCA - STL

1 stop5h 27mDelta

Deal found 6/10

$318

Tue 7/86:00 amSTL - FCA

1 stop10h 31mUnited Airlines

Tue 7/155:14 pmFCA - STL

1 stop5h 45mUnited Airlines

Deal found 6/10

$339

Mon 7/2110:47 amSTL - FCA

2 stops26h 38mMultiple Airlines

Thu 7/2410:40 amFCA - STL

2 stops22h 12mMultiple Airlines

Deal found 6/10

$352

Sun 7/277:32 pmSTL - FCA

2 stops18h 48mAlaska Airlines

Fri 8/16:33 amFCA - STL

1 stop6h 53mAlaska Airlines

Deal found 6/10

$643

One-way flights from St. Louis to Kalispell
Search for one-way flight options from St. Louis to Kalispell. Find affordable one-way fares based on user searches. Data last updated June 12, 2025.

Wed 9/106:00 amSTL - FCA

1 stop7h 27mAlaska Airlines

Deal found 6/12

$113

Mon 9/15:15 amSTL - FCA

1 stop6h 48mAmerican Airlines

Deal found 6/10

$114

Wed 7/237:15 pmSTL - FCA

1 stop6h 10mDelta

Deal found 6/11

$129

Sat 7/2610:45 amSTL - FCA

2 stops24h 05mMultiple Airlines

Deal found 6/12

$207

Sat 7/266:00 amSTL - FCA

1 stop10h 31mUnited Airlines

Deal found 6/12

$258

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 8/19

7:23 am-12:34 pm

1 stop6h 11m

Kalispell Glacier Park

Tue 8/26

3:49 pm-11:14 pm

1 stop6h 25m

$227

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Mon 8/4

5:37 pm-11:51 pm

1 stop7h 14m

Kalispell Glacier Park

Wed 8/13

6:11 pm-12:38 am

1 stop5h 27m

$258

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Tue 7/8

6:00 am-3:31 pm

1 stop10h 31m

Kalispell Glacier Park

Tue 7/15

5:14 pm-11:59 pm

1 stop5h 45m

$339

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Mon 7/21

10:47 am-12:25 pm

2 stops26h 38m

Kalispell Glacier Park

Thu 7/24

10:40 am-9:52 am

2 stops22h 12m

$352

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Tue 8/19

6:45 am-7:20 pm

2 stops13h 35m

Kalispell Glacier Park

Tue 8/26

8:02 pm-6:30 pm

2 stops21h 28m

$376

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Tue 9/9

3:35 pm-11:59 pm

1 stop9h 24m

Kalispell Glacier Park

Sun 9/14

6:39 am-2:39 pm

1 stop7h 00m

$406

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Wed 9/10

6:00 am-12:27 pm

1 stop7h 27m

$113

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Mon 9/1

5:15 am-11:03 am

1 stop6h 48m

$114

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Wed 7/23

7:15 pm-12:25 am

1 stop6h 10m

$129

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Sat 7/26

10:45 am-9:50 am

2 stops24h 05m

$207

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 11 results

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 38 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 $619). 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 Hawaiian 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

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Alaska Airlines

8.0

Very good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Delta

8.0

Very good

7,946 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Hawaiian Airlines

7.9

Good

2,494 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

United Airlines

7.4

Good

8,790 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

What are the cheapest airlines flying from St. Louis to Kalispell round-trip?
Currently priced at $227, 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 Delta and United Airlines - these airlines can fly you to your destination from $258 and $339, respectively. American Airlines is currently priced 54% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from St. Louis to Kalispell one-way?
For one-way options, check prices for Alaska Airlines. According to our data, you can fly for as low as $113. Users have also found prices from $114 and $129 on American Airlines and Delta, respectively.
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 $619). 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

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Other flights to Kalispell

Top 4 airlines flying from St. Louis to Kalispell

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$291	Average$505	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$298	Average$450	FlexibilityNo cancel fee	On-timeN/A
Alaska Airlines	Cheapest$311	Average$487	FlexibilityNo cancel fee	On-time75%
United Airlines	Cheapest$341	Average$577	FlexibilityNo cancel fee	On-time69%

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$113+ 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 9/10. 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

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3. Compare prices and book

Cheapflights Tip: The best prices from Lambert-St Louis to Kalispell Glacier Park are usually found in December or April, booked 38 days in advance, depart on a Wednesday or Tuesday and return on a Friday

Cheap flight deals from St. Louis to Kalispell

Round-trip from

One-way 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 June 12, 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 June 12, 2025.

Cheapflights Fare Finder

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

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 June 9, 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 June 12, 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?

What are the cheapest airlines to fly from St. Louis to Kalispell one-way?

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?

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Alternative routes for St. Louis to Kalispell

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Top 4 airlines flying from St. Louis to Kalispell

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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 June 12, 2025.