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Cheap flights from Kalispell to St. Louis from $140

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 3/5. 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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0 bags

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Find the cheapest flights from Kalispell to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
1:52 pm - 11:59 pm
FCA
-
STL
9h 07m
1 stop
Alaska Airlines Logo
7:00 am - 7:46 pm
STL
-
FCA
13h 46m
1 stop
$257Alaska Airlines
ven., avr. 17 - lun., avr. 20
United Airlines Logo
2:33 pm - 8:54 pm
FCA
-
STL
5h 21m
1 stop
United Airlines Logo
9:10 am - 9:27 pm
STL
-
FCA
13h 17m
2 stops
$283United Airlines
ven., avr. 17 - lun., avr. 20
Delta Logo
12:10 pm - 9:31 pm
FCA
-
STL
8h 21m
1 stop
Delta Logo
6:45 pm - 11:27 pm
STL
-
FCA
5h 42m
1 stop
$288Delta
sam., avr. 25 - dim., mai 3
United Airlines Logo
6:00 am - 1:08 pm
FCA
-
STL
6h 08m
1 stop
United Airlines Logo
4:15 pm - 9:57 pm
STL
-
FCA
6h 42m
1 stop
$292United Airlines
sam., avr. 25 - sam., mai 2
Alaska Airlines Logo
6:15 am - 3:16 pm
FCA
-
STL
8h 01m
1 stop
Alaska Airlines Logo
7:41 pm - 10:51 am
STL
-
FCA
16h 10m
1 stop
$297Alaska Airlines
sam., juin 6 - lun., juin 8
Delta Logo
5:05 am - 4:50 pm
FCA
-
STL
10h 45m
2 stops
Delta Logo
6:45 pm - 11:27 pm
STL
-
FCA
5h 42m
1 stop
$313Delta
sam., avr. 25 - dim., mai 3
United Airlines Logo
2:33 pm - 8:54 pm
FCA
-
STL
5h 21m
1 stop
United Airlines Logo
9:00 am - 9:57 pm
STL
-
FCA
13h 57m
2 stops
$319United Airlines
sam., avr. 25 - sam., mai 2
United Airlines Logo
10:42 am - 9:16 pm
FCA
-
STL
9h 34m
2 stops
United Airlines Logo
6:00 am - 11:29 am
STL
-
FCA
6h 29m
1 stop
$350United Airlines
sam., juin 6 - lun., juin 8
United Airlines Logo
6:00 am - 5:36 pm
FCA
-
STL
10h 36m
2 stops
United Airlines Logo
9:00 am - 9:57 pm
STL
-
FCA
13h 57m
2 stops
$464United Airlines
sam., avr. 25 - sam., mai 2
United Airlines Logo
2:33 pm - 8:43 pm
FCA
-
STL
5h 10m
1 stop
United Airlines Logo
2:35 pm - 9:57 pm
STL
-
FCA
8h 22m
1 stop
$472United Airlines
jeu., avr. 30 - lun., mai 11

Alaska Airlines flights from Kalispell to St. Louis

Our best Alaska Airlines deals on Kalispell to St. Louis flight tickets
Alaska Airlines
Apr 17
FCA1:52 pmKalispell Glacier Park
9h 07m
1 stop
STL11:59 pmLambert-St Louis
Apr 20
STL7:00 amLambert-St Louis
13h 46m
1 stop
FCA7:46 pmKalispell Glacier Park
$257
Alaska Airlines
Apr 30
FCA6:35 amKalispell Glacier Park
8h 15m
1 stop
STL3:50 pmLambert-St Louis
May 11
STL7:00 amLambert-St Louis
31h 03m
2 stops
FCA1:03 pmKalispell Glacier Park
$576
Alaska Airlines
Apr 25
FCA6:35 amKalispell Glacier Park
11h 58m
2 stops
STL7:33 pmLambert-St Louis
May 3
STL5:21 pmLambert-St Louis
19h 42m
2 stops
FCA12:03 pmKalispell Glacier Park
$580

United Airlines flights from Kalispell to St. Louis

Our best United Airlines deals on Kalispell to St. Louis flight tickets
United Airlines
Apr 17
FCA2:33 pmKalispell Glacier Park
5h 21m
1 stop
STL8:54 pmLambert-St Louis
Apr 20
STL9:10 amLambert-St Louis
13h 17m
2 stops
FCA9:27 pmKalispell Glacier Park
$283
United Airlines
Apr 25
FCA6:00 amKalispell Glacier Park
6h 08m
1 stop
STL1:08 pmLambert-St Louis
May 2
STL4:15 pmLambert-St Louis
6h 42m
1 stop
FCA9:57 pmKalispell Glacier Park
$292
United Airlines
Apr 25
FCA2:33 pmKalispell Glacier Park
5h 21m
1 stop
STL8:54 pmLambert-St Louis
May 2
STL9:00 amLambert-St Louis
13h 57m
2 stops
FCA9:57 pmKalispell Glacier Park
$319

momondo 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, momondo users made 832,500 searches. Data last updated février 23, 2026.
Use the filters below to find and compare flights from Kalispell to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

ven. 4/17

1:52 pm-11:59 pm

1 stop9h 07m

Lambert-St Louis

lun. 4/20

7:00 am-7:46 pm

1 stop13h 46m

$257

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

ven. 4/17

2:33 pm-8:54 pm

1 stop5h 21m

Lambert-St Louis

lun. 4/20

9:10 am-9:27 pm

2 stops13h 17m

$283

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

sam. 4/25

12:10 pm-9:31 pm

1 stop8h 21m

Lambert-St Louis

dim. 5/3

6:45 pm-11:27 pm

1 stop5h 42m

$288

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

sam. 4/25

6:00 am-1:08 pm

1 stop6h 08m

Lambert-St Louis

sam. 5/2

4:15 pm-9:57 pm

1 stop6h 42m

$292

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

sam. 6/6

6:15 am-3:16 pm

1 stop8h 01m

Lambert-St Louis

lun. 6/8

7:41 pm-10:51 am

1 stop16h 10m

$297

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

sam. 4/25

5:05 am-4:50 pm

2 stops10h 45m

Lambert-St Louis

dim. 5/3

6:45 pm-11:27 pm

1 stop5h 42m

$313

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

sam. 4/25

2:33 pm-8:54 pm

1 stop5h 21m

Lambert-St Louis

sam. 5/2

9:00 am-9:57 pm

2 stops13h 57m

$319

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

sam. 6/6

10:42 am-9:16 pm

2 stops9h 34m

Lambert-St Louis

lun. 6/8

6:00 am-11:29 am

1 stop6h 29m

$350

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

sam. 4/25

6:00 am-5:36 pm

2 stops10h 36m

Lambert-St Louis

sam. 5/2

9:00 am-9:57 pm

2 stops13h 57m

$464

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

jeu. 4/30

2:33 pm-8:43 pm

1 stop5h 10m

Lambert-St Louis

lun. 5/11

2:35 pm-9:57 pm

1 stop8h 22m

$472

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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See travel insights to St. Louis from

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

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

Delta is the most popular carrier operating from Kalispell Glacier Park to Lambert-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

5h 25m

Direct flights

None
The fastest flight from Kalispell to St. Louis takes 5h 25m
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 5h 25m.

  • 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?

  • 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?

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
United AirlinesPriceFrom $318Free CancellationRating
7.4
9,342 reviews
Search United Airlines flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Florissant
Maryland Heights
O'Fallon
St. Peters
Wentzville
Collinsville
Fenton
Alton
Farmington
Clayton
Edwardsville
Festus
Eureka
Litchfield
Glencoe
Grafton

Why use momondo?

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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