What is the cheapest airline that flies from Kalispell Glacier Park to Lambert-St Louis?

United Airlines and Alaska Airlines are the most popular carriers operating from Kalispell Glacier Park to Lambert-St Louis

When did momondo last update prices for flights from Kalispell Glacier Park Airport to Lambert-St Louis Airport?

Prices for flights from Kalispell Glacier Park Airport to Lambert-St Louis Airport refresh daily.

How many operators does momondo search for flights from Kalispell Glacier Park Airport to Lambert-St Louis Airport?

The number of operators available for flights from Kalispell Glacier Park Airport to Lambert-St Louis Airport is 2 as of December 2025.

How old do you have to be to fly from Kalispell Glacier Park Airport to Lambert-St Louis Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Kalispell Glacier Park Airport to Lambert-St Louis Airport.

What documentation or ID do you need to fly to Lambert-St Louis Airport?

The travel and health documents you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$124 Cheap Flights from Kalispell to St. Louis in 2025/26

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3:23 pm - 11:25 pm

FCA

STL

7h 02m1 stop

5:00 pm - 11:18 pm

STL

FCA

7h 18m1 stop

$263Delta

Thu, Jan 15 - Sun, Jan 18

2:42 pm - 8:58 pm

FCA

STL

5h 16m1 stop

8:30 am - 9:59 pm

STL

FCA

14h 29m2 stops

$348United Airlines

Thu, Jan 15 - Sun, Jan 18

2:42 pm - 8:58 pm

FCA

STL

5h 16m1 stop

2:45 pm - 9:59 pm

STL

FCA

8h 14m1 stop

$383United Airlines

Thu, Jan 29 - Sun, Feb 1

6:25 am - 1:54 pm

FCA

STL

6h 29m1 stop

2:50 pm - 1:14 pm

STL

FCA

23h 24m2 stops

$392Alaska Airlines

Thu, Jan 29 - Sun, Feb 1

3:23 pm - 11:25 pm

FCA

STL

7h 02m1 stop

6:35 am - 2:22 pm

STL

FCA

8h 47m2 stops

$470Delta

Thu, Jan 8 - Sun, Jan 11

12:54 pm - 10:46 pm

FCA

STL

32h 52m2 stops

2:50 pm - 1:14 pm

STL

FCA

23h 24m2 stops

$487Alaska Airlines

Thu, Jan 29 - Sun, Feb 1

6:00 am - 4:03 pm

FCA

STL

9h 03m2 stops

8:30 am - 9:59 pm

STL

FCA

14h 29m2 stops

$505United Airlines

Thu, Jan 15 - Sun, Jan 18

12:54 pm - 10:46 pm

FCA

STL

32h 52m2 stops

2:50 pm - 1:14 pm

STL

FCA

23h 24m2 stops

$507Alaska Airlines

Thu, Jan 29 - Sun, Feb 1

5:54 pm - 8:52 am

FCA

STL

13h 58m2 stops

6:35 am - 2:22 pm

STL

FCA

8h 47m2 stops

$539Delta

Thu, Jan 8 - Sun, Jan 11

7:46 pm - 1:54 pm

FCA

STL

17h 08m1 stop

2:50 pm - 11:58 pm

STL

FCA

10h 08m1 stop

$583Alaska Airlines

Thu, Jan 8 - Sun, Jan 11

Delta flights from Kalispell to St. Louis

Our best Delta deals on Kalispell to St. Louis flight tickets

Delta

Jan 15

FCA3:23 pmKalispell Glacier Park

7h 02m

1 stop

STL11:25 pmLambert-St Louis

Jan 18

STL5:00 pmLambert-St Louis

7h 18m

1 stop

FCA11:18 pmKalispell Glacier Park

$263

Find similar

Delta

Jan 8

FCA3:23 pmKalispell Glacier Park

7h 02m

1 stop

STL11:25 pmLambert-St Louis

Jan 11

STL6:35 amLambert-St Louis

8h 47m

2 stops

FCA2:22 pmKalispell Glacier Park

$470

Find similar

Delta

Jan 8

FCA5:54 pmKalispell Glacier Park

13h 58m

2 stops

STL8:52 amLambert-St Louis

Jan 11

STL6:35 amLambert-St Louis

8h 47m

2 stops

FCA2:22 pmKalispell Glacier Park

$539

Find similar

United Airlines flights from Kalispell to St. Louis

Our best United Airlines deals on Kalispell to St. Louis flight tickets

United Airlines

Jan 15

FCA2:42 pmKalispell Glacier Park

5h 16m

1 stop

STL8:58 pmLambert-St Louis

Jan 18

STL8:30 amLambert-St Louis

14h 29m

2 stops

FCA9:59 pmKalispell Glacier Park

$348

Find similar

United Airlines

Jan 29

FCA2:42 pmKalispell Glacier Park

5h 16m

1 stop

STL8:58 pmLambert-St Louis

Feb 1

STL2:45 pmLambert-St Louis

8h 14m

1 stop

FCA9:59 pmKalispell Glacier Park

$383

Find similar

United Airlines

Jan 15

FCA6:00 amKalispell Glacier Park

9h 03m

2 stops

STL4:03 pmLambert-St Louis

Jan 18

STL8:30 amLambert-St Louis

14h 29m

2 stops

FCA9:59 pmKalispell Glacier Park

$505

Find similar

Fly from

Fly to

Route

Depart

Return

Price

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Thu 1/15

3:23 pm-11:25 pm

1 stop7h 02m

Lambert-St Louis

Sun 1/18

5:00 pm-11:18 pm

1 stop7h 18m

$263

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Thu 1/15

2:42 pm-8:58 pm

1 stop5h 16m

Lambert-St Louis

Sun 1/18

8:30 am-9:59 pm

2 stops14h 29m

$348

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Thu 1/29

2:42 pm-8:58 pm

1 stop5h 16m

Lambert-St Louis

Sun 2/1

2:45 pm-9:59 pm

1 stop8h 14m

$383

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Thu 1/29

6:25 am-1:54 pm

1 stop6h 29m

Lambert-St Louis

Sun 2/1

2:50 pm-1:14 pm

2 stops23h 24m

$392

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Thu 1/8

3:23 pm-11:25 pm

1 stop7h 02m

Lambert-St Louis

Sun 1/11

6:35 am-2:22 pm

2 stops8h 47m

$470

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Thu 1/29

12:54 pm-10:46 pm

2 stops32h 52m

Lambert-St Louis

Sun 2/1

2:50 pm-1:14 pm

2 stops23h 24m

$487

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Thu 1/15

6:00 am-4:03 pm

2 stops9h 03m

Lambert-St Louis

Sun 1/18

8:30 am-9:59 pm

2 stops14h 29m

$505

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Thu 1/29

12:54 pm-10:46 pm

2 stops32h 52m

Lambert-St Louis

Sun 2/1

2:50 pm-1:14 pm

2 stops23h 24m

$507

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Thu 1/8

5:54 pm-8:52 am

2 stops13h 58m

Lambert-St Louis

Sun 1/11

6:35 am-2:22 pm

2 stops8h 47m

$539

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Thu 1/8

7:46 pm-1:54 pm

1 stop17h 08m

Lambert-St Louis

Sun 1/11

2:50 pm-11:58 pm

1 stop10h 08m

$583

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first

How to get the cheapest flight ticket from Kalispell to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

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

In general, November is the cheapest month to fly from Kalispell to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $287. The month of March is another great option to travel to St. Louis, with average flight prices from Kalispell averaging around $373.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Friday when prices can be found for as low as $386. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $736. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

When to book flights from Kalispell to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Kalispell to St. Louis according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Kalispell to St. Louis (FCA to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Kalispell to St. Louis

Fastest flight time	6h 16m
Direct flights	None

The fastest flight from Kalispell to St. Louis takes 6h 16m

There are no direct flights from Kalispell to St. Louis. There are no popular flight routes from Kalispell to St. Louis.

Search flight deals

How far is Kalispell Glacier Park to Lambert-St Louis by plane?
Lambert-St Louis is 1369.9 mi away from Kalispell Glacier Park. In terms of flight time, this usually takes a little over 6h 16m.
When did momondo last update prices for flights from Kalispell Glacier Park Airport to Lambert-St Louis Airport?
Prices for flights from Kalispell Glacier Park Airport to Lambert-St Louis Airport refresh daily.
How many operators does momondo search for flights from Kalispell Glacier Park Airport to Lambert-St Louis Airport?
The number of operators available for flights from Kalispell Glacier Park Airport to Lambert-St Louis Airport is 2 as of December 2025.
How old do you have to be to fly from Kalispell Glacier Park Airport to Lambert-St Louis Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Kalispell Glacier Park Airport to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The travel and health documents you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Kalispell to St. Louis?
momondo data reveals that the most frequently booked airline on the route from Kalispell to St. Louis is United Airlines, representing 61% of all bookings. The subsequent popular airline is Delta at 39%.

Best airlines flying from Kalispell to St. Louis

Compare and see reviews for airlines that fly from Kalispell to St. Louis with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $205	Free Cancellation	Rating 7.9 8,019 reviews		Search Delta flights
United Airlines	PriceFrom $318	Free Cancellation	Rating 7.4 9,113 reviews		Search United Airlines flights

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Why should I use momondo to find a flight deal from Kalispell to St. Louis?

It is quick and easy to find Kalispell to St. Louis flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to St. Louis that suits you.

Can I find flights from Kalispell to St. Louis with flexible booking policies on momondo?

Yes. All flights to St. Louis from Kalispell on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Kalispell to St. Louis?

Once you have performed a search for Kalispell to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Kalispell to St. Louis right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to St. Louis from Kalispell. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Cheap flights from Kalispell to St. Louis from $124

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Kalispell to St. Louis departing on 5/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Delta flights from Kalispell to St. Louis

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Our best United Airlines deals on Kalispell to St. Louis flight tickets

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How to get the cheapest flight ticket from Kalispell to St. Louis

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

What is the cheapest day to depart on your flight to St. Louis?

What is the cheapest airline that flies from Kalispell Glacier Park to Lambert-St Louis?

United Airlines and Alaska Airlines are the most popular carriers operating from Kalispell Glacier Park to Lambert-St Louis

When to book flights from Kalispell to St. Louis

Cheap Kalispell to St. Louis (FCA to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Kalispell to St. Louis

Fastest flight time

Direct flights

How far is Kalispell Glacier Park to Lambert-St Louis by plane?

When did momondo last update prices for flights from Kalispell Glacier Park Airport to Lambert-St Louis Airport?

How many operators does momondo search for flights from Kalispell Glacier Park Airport to Lambert-St Louis Airport?

How old do you have to be to fly from Kalispell Glacier Park Airport to Lambert-St Louis Airport?

What documentation or ID do you need to fly to Lambert-St Louis Airport?

What is the most popular airline from Kalispell to St. Louis?

Best airlines flying from Kalispell to St. Louis

Compare and see reviews for airlines that fly from Kalispell to St. Louis with momondo

Traveling to a place near St. Louis?

Why use momondo?

Why should I use momondo to find a flight deal from Kalispell to St. Louis?

Can I find flights from Kalispell to St. Louis with flexible booking policies on momondo?

How can momondo help me find flights from Kalispell to St. Louis?

I’m not ready to book a flight from Kalispell to St. Louis right now. Can momondo alert me if prices change?

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

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