Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Kalispell to St. Louis from $155

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 8/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Kalispell to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
4:50 pm - 12:14 am
FCA
-
STL
6h 24m
1 stop
American Airlines Logo
5:42 am - 11:36 am
STL
-
FCA
6h 54m
1 stop
$309American Airlines
Fri, Aug 21 - Sun, Aug 23
American Airlines Logo
3:26 pm - 11:43 pm
FCA
-
STL
7h 17m
1 stop
American Airlines Logo
5:00 am - 2:33 pm
STL
-
FCA
10h 33m
2 stops
$314American Airlines
Wed, Sep 23 - Sat, Sep 26
Delta Logo
6:00 pm - 12:44 am
FCA
-
STL
5h 44m
1 stop
Delta Logo
5:47 pm - 11:43 pm
STL
-
FCA
6h 56m
1 stop
$344Delta
Fri, Sep 18 - Fri, Sep 25
Delta Logo
6:00 pm - 12:44 am
FCA
-
STL
5h 44m
1 stop
Delta Logo
6:15 am - 1:25 pm
STL
-
FCA
8h 10m
1 stop
$384Delta
Wed, Sep 23 - Sun, Sep 27
United Airlines Logo
6:15 am - 12:37 pm
FCA
-
STL
5h 22m
1 stop
United Airlines Logo
8:58 am - 1:33 pm
STL
-
FCA
5h 35m
1 stop
$399United Airlines
Sat, Oct 31 - Tue, Nov 3
United Airlines Logo
6:15 am - 12:37 pm
FCA
-
STL
5h 22m
1 stop
United Airlines Logo
9:40 am - 9:42 pm
STL
-
FCA
13h 02m
2 stops
$404United Airlines
Sat, Oct 31 - Tue, Nov 3
Delta Logo
6:00 pm - 12:44 am
FCA
-
STL
5h 44m
1 stop
Delta Logo
5:47 pm - 11:43 pm
STL
-
FCA
6h 56m
1 stop
$419Delta
Fri, Sep 18 - Wed, Sep 23
Multiple Airlines Logo
8:46 pm - 11:51 am
FCA
-
STL
14h 05m
1 stop
Multiple Airlines Logo
10:35 am - 7:43 pm
STL
-
FCA
34h 08m
2 stops
$427Multiple Airlines
Mon, Sep 21 - Thu, Sep 24
Multiple Airlines Logo
8:46 pm - 9:40 am
FCA
-
STL
35h 54m
2 stops
Multiple Airlines Logo
12:46 pm - 7:56 pm
STL
-
FCA
8h 10m
1 stop
$430Multiple Airlines
Mon, Sep 21 - Mon, Sep 28
Delta Logo
6:00 pm - 12:44 am
FCA
-
STL
5h 44m
1 stop
Delta Logo
7:05 am - 10:54 pm
STL
-
FCA
16h 49m
2 stops
$432Delta
Fri, Sep 18 - Sat, Sep 26

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Delta flights from Kalispell to St. Louis

Our best Delta deals on Kalispell to St. Louis flight tickets
Delta
Sep 18
FCA6:00 pmKalispell Glacier Park
5h 44m
1 stop
STL12:44 amLambert-St Louis
Sep 25
STL5:47 pmLambert-St Louis
6h 56m
1 stop
FCA11:43 pmKalispell Glacier Park
$344
Delta
Sep 23
FCA6:00 pmKalispell Glacier Park
5h 44m
1 stop
STL12:44 amLambert-St Louis
Sep 27
STL6:15 amLambert-St Louis
8h 10m
1 stop
FCA1:25 pmKalispell Glacier Park
$384
Delta
Sep 18
FCA6:00 pmKalispell Glacier Park
5h 44m
1 stop
STL12:44 amLambert-St Louis
Sep 23
STL5:47 pmLambert-St Louis
6h 56m
1 stop
FCA11:43 pmKalispell Glacier Park
$419

Alaska Airlines flights from Kalispell to St. Louis

Our best Alaska Airlines deals on Kalispell to St. Louis flight tickets
Alaska Airlines
Sep 25
FCA6:15 amKalispell Glacier Park
7h 06m
1 stop
STL2:21 pmLambert-St Louis
Sep 29
STL6:29 amLambert-St Louis
6h 51m
1 stop
FCA12:20 pmKalispell Glacier Park
$449
Alaska Airlines
Sep 25
FCA6:15 amKalispell Glacier Park
7h 06m
1 stop
STL2:21 pmLambert-St Louis
Sep 26
STL3:19 pmLambert-St Louis
8h 37m
1 stop
FCA10:56 pmKalispell Glacier Park
$484
Alaska Airlines
Sep 23
FCA6:15 amKalispell Glacier Park
9h 55m
2 stops
STL5:10 pmLambert-St Louis
Sep 24
STL3:19 pmLambert-St Louis
8h 37m
1 stop
FCA10:56 pmKalispell Glacier Park
$566

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 July 16, 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

Cheapest round-trip

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Fri 8/21

4:50 pm-12:14 am

1 stop6h 24m

Lambert-St Louis

Sun 8/23

5:42 am-11:36 am

1 stop6h 54m

$309

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Wed 9/23

3:26 pm-11:43 pm

1 stop7h 17m

Lambert-St Louis

Sat 9/26

5:00 am-2:33 pm

2 stops10h 33m

$314

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Fri 9/18

6:00 pm-12:44 am

1 stop5h 44m

Lambert-St Louis

Fri 9/25

5:47 pm-11:43 pm

1 stop6h 56m

$344

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Wed 9/23

6:00 pm-12:44 am

1 stop5h 44m

Lambert-St Louis

Sun 9/27

6:15 am-1:25 pm

1 stop8h 10m

$384
Quickest round-trip

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Sat 10/31

6:15 am-12:37 pm

1 stop5h 22m

Lambert-St Louis

Tue 11/3

8:58 am-1:33 pm

1 stop5h 35m

$399

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Sat 10/31

6:15 am-12:37 pm

1 stop5h 22m

Lambert-St Louis

Tue 11/3

9:40 am-9:42 pm

2 stops13h 02m

$404

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Fri 9/18

6:00 pm-12:44 am

1 stop5h 44m

Lambert-St Louis

Wed 9/23

5:47 pm-11:43 pm

1 stop6h 56m

$419

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Mon 9/21

8:46 pm-11:51 am

1 stop14h 05m

Lambert-St Louis

Thu 9/24

10:35 am-7:43 pm

2 stops34h 08m

$427

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Mon 9/21

8:46 pm-9:40 am

2 stops35h 54m

Lambert-St Louis

Mon 9/28

12:46 pm-7:56 pm

1 stop8h 10m

$430

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Fri 9/18

6:00 pm-12:44 am

1 stop5h 44m

Lambert-St Louis

Sat 9/26

7:05 am-10:54 pm

2 stops16h 49m

$432

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 month to fly to St. Louis?

In general, July 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 $0. The month of February is another great option to travel to St. Louis, with average flight prices from Kalispell averaging around $0.

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 22m

Direct flights

None
The fastest flight from Kalispell to St. Louis takes 5h 22m
There are no direct flights from Kalispell to St. Louis. There are no popular flight routes from Kalispell to St. Louis.
Search flight deals

Frequently asked questions about flying from Kalispell to St. Louis

  • 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 22m.

  • 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
DeltaPriceFrom $296Free CancellationRating
7.8
8,471 reviews
Search Delta flights
United AirlinesPriceFrom $308Free CancellationRating
7.4
9,993 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
Fairview Heights
Hermann
Collinsville
Florissant
St. Peters
Maryland Heights
O'Fallon
Alton
Farmington
Wentzville
Clayton
Fenton
Festus
Eureka
Edwardsville
Litchfield
Grafton
Shrewsbury

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.

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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 8/15
Sat 8/22
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States