What is the cheapest airline that flies from Lambert-St Louis to Montana?

Delta, American Airlines, and United Airlines are the most popular carriers operating from Lambert-St Louis to Montana

What airlines fly to Montana?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to Montana from St. Louis according to our data. United Airlines is the first choice among our users, with 50% of people opting to fly with this airline when traveling to Montana. Keep in mind that there are 5 different airlines that fly to Montana on a routine basis, so you have a few additional options to choose from.

How many flights depart from St. Louis to Montana on average per week?

As of September 2026, 1 flights take off from St. Louis and land in Montana each week. The most common flight departure day for this route is Wed, with 100% of weekly flights taking off on this day.

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

Prices for flights from Lambert-St Louis Airport to Montana refresh daily.

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

There are 5 operators available for flights from Lambert-St Louis Airport to Montana as of September 2026.

How old do you have to be to fly from Lambert-St Louis Airport to Montana?

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 Lambert-St Louis Airport to Montana.

What documentation or ID do you need to fly to Montana?

The travel and health documents you'll need for your trip to Montana 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 Montana. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$169 Cheap Flights from St. Louis to Montana in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Montana

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:54 pm - 8:51 pmSTL Lambert-St Louis-BIL Billings Logan Intl

6h 57m1 stop Dallas/Fort Worth

7:00 am - 2:04 pmBIL Billings Logan Intl-STL Lambert-St Louis

6h 04m1 stop Dallas/Fort Worth

$329American Airlines

Tue, Feb 23 - Sat, Feb 27

9:00 am - 7:48 pmSTL Lambert-St Louis-BIL Billings Logan Intl

11h 48m2 stops Atlanta Hartsfield-Jackson Minneapolis St Paul

12:58 pm - 9:41 pmBIL Billings Logan Intl-STL Lambert-St Louis

7h 43m1 stop Salt Lake City

$334Delta

Tue, Feb 23 - Sat, Feb 27

2:38 pm - 10:25 pmSTL Lambert-St Louis-BIL Billings Logan Intl

8h 47m2 stops Detroit Metropolitan Wayne County Salt Lake City

12:58 pm - 9:09 pmBIL Billings Logan Intl-STL Lambert-St Louis

7h 11m1 stop Salt Lake City

$334Delta

Fri, Oct 23 - Sun, Nov 1

5:10 am - 10:04 amSTL Lambert-St Louis-FCA Kalispell Glacier Park

5h 54m1 stop Denver Intl

2:30 pm - 8:36 pmFCA Kalispell Glacier Park-STL Lambert-St Louis

5h 06m1 stop Denver Intl

$339United Airlines

Sun, Oct 11 - Sat, Oct 17

7:08 am - 3:16 pmSTL Lambert-St Louis-FCA Kalispell Glacier Park

9h 08m1 stop San Francisco

6:14 am - 12:38 pmFCA Kalispell Glacier Park-STL Lambert-St Louis

5h 24m1 stop Denver Intl

$339United Airlines

Tue, Oct 20 - Thu, Oct 29

4:42 pm - 11:09 pmSTL Lambert-St Louis-BZN Bozeman Gallatin Field

7h 27m1 stop Seattle/Tacoma Intl

1:55 pm - 11:59 pmBZN Bozeman Gallatin Field-STL Lambert-St Louis

9h 04m1 stop Seattle/Tacoma Intl

$355Alaska Airlines

Sat, Oct 24 - Tue, Oct 27

7:29 am - 12:25 pmSTL Lambert-St Louis-BZN Bozeman Gallatin Field

5h 56m1 stop Chicago O'Hare Intl

1:47 pm - 9:59 pmBZN Bozeman Gallatin Field-STL Lambert-St Louis

7h 12m1 stop Dallas/Fort Worth

$355American Airlines

Sat, Oct 17 - Mon, Oct 19

5:20 am - 1:35 pmSTL Lambert-St Louis-BZN Bozeman Gallatin Field

9h 15m2 stops Phoenix Sky Harbor Intl Las Vegas Harry Reid Intl

11:30 am - 6:30 pmBZN Bozeman Gallatin Field-STL Lambert-St Louis

6h 00m1 stop Denver Intl

$384Southwest

Sat, Jan 23 - Fri, Jan 29

5:20 am - 1:35 pmSTL Lambert-St Louis-BZN Bozeman Gallatin Field

9h 15m2 stops Phoenix Sky Harbor Intl Las Vegas Harry Reid Intl

11:30 am - 9:45 pmBZN Bozeman Gallatin Field-STL Lambert-St Louis

9h 15m2 stops Denver Intl Nashville Intl

$399Southwest

Sat, Jan 23 - Fri, Jan 29

3:54 pm - 10:57 pmSTL Lambert-St Louis-FCA Kalispell Glacier Park

8h 03m1 stop Seattle/Tacoma Intl

1:51 pm - 2:56 pmFCA Kalispell Glacier Park-STL Lambert-St Louis

24h 05m1 stop Seattle/Tacoma Intl

$419Alaska Airlines

Fri, Jan 8 - Mon, Jan 11

Cheap last minute flights

Enter your travel dates to find the best prices.

5:00 am - 12:44 pmSTL Lambert-St Louis-FCA Kalispell Glacier Park

8h 44m1 stop Chicago O'Hare Intl

1:34 pm - 8:44 pmFCA Kalispell Glacier Park-STL Lambert-St Louis

6h 10m1 stop Chicago O'Hare Intl

$459American Airlines

Tue, Sep 15 - Thu, Sep 17

6:29 am - 12:20 pmSTL Lambert-St Louis-FCA Kalispell Glacier Park

6h 51m1 stop Seattle/Tacoma Intl

6:08 pm - 2:21 pmFCA Kalispell Glacier Park-STL Lambert-St Louis

19h 13m1 stop Seattle/Tacoma Intl

$480Alaska Airlines

Sat, Sep 12 - Sat, Sep 19

12:59 pm - 9:21 pmSTL Lambert-St Louis-FCA Kalispell Glacier Park

9h 22m2 stops Chicago O'Hare Intl Denver Intl

5:04 pm - 11:31 pmFCA Kalispell Glacier Park-STL Lambert-St Louis

5h 27m1 stop Denver Intl

$484United Airlines

Tue, Sep 15 - Thu, Sep 17

2:30 pm - 11:43 pmSTL Lambert-St Louis-FCA Kalispell Glacier Park

10h 13m2 stops Atlanta Hartsfield-Jackson Minneapolis St Paul

6:00 pm - 12:44 amFCA Kalispell Glacier Park-STL Lambert-St Louis

5h 44m1 stop Salt Lake City

$484Delta

Tue, Sep 15 - Thu, Sep 17

5:00 pm - 10:54 pmSTL Lambert-St Louis-FCA Kalispell Glacier Park

6h 54m1 stop Salt Lake City

6:35 am - 3:12 pmFCA Kalispell Glacier Park-STL Lambert-St Louis

7h 37m1 stop Minneapolis St Paul

$500Delta

Sat, Sep 12 - Sat, Sep 19

5:43 am - 12:04 pmSTL Lambert-St Louis-FCA Kalispell Glacier Park

7h 21m1 stop Dallas/Fort Worth

3:26 pm - 11:43 pmFCA Kalispell Glacier Park-STL Lambert-St Louis

7h 17m1 stop Dallas/Fort Worth

$501American Airlines

Mon, Sep 14 - Wed, Sep 16

12:59 pm - 7:04 pmSTL Lambert-St Louis-FCA Kalispell Glacier Park

7h 05m1 stop Chicago O'Hare Intl

1:26 pm - 11:40 pmFCA Kalispell Glacier Park-STL Lambert-St Louis

9h 14m2 stops Los Angeles Los Angeles Denver Intl

$506United Airlines

Mon, Sep 14 - Wed, Sep 16

7:00 am - 10:40 amSTL Lambert-St Louis-BZN Bozeman Gallatin Field

4h 40m1 stop Denver Intl

5:05 pm - 12:40 amBZN Bozeman Gallatin Field-STL Lambert-St Louis

6h 35m1 stop Las Vegas Harry Reid Intl

$539Southwest

Wed, Sep 16 - Mon, Sep 21

5:50 am - 11:25 amSTL Lambert-St Louis-BZN Bozeman Gallatin Field

6h 35m1 stop Las Vegas Harry Reid Intl

6:55 am - 9:15 pmBZN Bozeman Gallatin Field-STL Lambert-St Louis

13h 20m2 stops Las Vegas Harry Reid Intl Baltimore/Washington

$544Southwest

Sun, Sep 13 - Tue, Sep 15

6:29 am - 4:39 pmSTL Lambert-St Louis-GTF Great Falls

11h 10m1 stop Seattle/Tacoma Intl

5:19 pm - 2:21 pmGTF Great Falls-STL Lambert-St Louis

20h 02m1 stop Seattle/Tacoma Intl

$748Alaska Airlines

Mon, Sep 14 - Tue, Sep 29

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Southwest flights from St. Louis to Montana

Our best Southwest deals on St. Louis to Montana flight tickets

Southwest

Jan 23

STL5:20 amLambert-St Louis

9h 15m

2 stops

BZN1:35 pmBozeman Gallatin Field

Jan 29

BZN11:30 amBozeman Gallatin Field

9h 15m

2 stops

STL9:45 pmLambert-St Louis

$399

Southwest

Nov 8

STL6:10 amLambert-St Louis

5h 20m

1 stop

BZN10:30 amBozeman Gallatin Field

Nov 8

BZN4:05 pmBozeman Gallatin Field

5h 15m

1 stop

STL10:20 pmLambert-St Louis

$457

Southwest

Oct 17

STL6:30 amLambert-St Louis

8h 20m

2 stops

BZN1:50 pmBozeman Gallatin Field

Oct 19

BZN4:15 pmBozeman Gallatin Field

7h 25m

2 stops

STL12:40 amLambert-St Louis

$476

American Airlines flights from St. Louis to Montana

Our best American Airlines deals on St. Louis to Montana flight tickets

American Airlines

Feb 23

STL2:54 pmLambert-St Louis

6h 57m

1 stop

BIL8:51 pmBillings Logan Intl

Feb 27

BIL7:00 amBillings Logan Intl

6h 04m

1 stop

STL2:04 pmLambert-St Louis

$329

American Airlines

Oct 25

STL7:29 amLambert-St Louis

6h 58m

1 stop

FCA1:27 pmKalispell Glacier Park

Oct 29

FCA1:58 pmKalispell Glacier Park

5h 59m

1 stop

STL8:57 pmLambert-St Louis

$369

American Airlines

Oct 16

STL6:32 amLambert-St Louis

7h 25m

1 stop

BZN12:57 pmBozeman Gallatin Field

Oct 23

BZN1:47 pmBozeman Gallatin Field

9h 32m

2 stops

STL12:19 amLambert-St Louis

$408

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBillings

STL Lambert-St Louis - BIL Billings Logan Intl

STLBIL

Lambert-St Louis

Tue 2/23

2:54 pm-8:51 pm

1 stop6h 57m

Billings Logan Intl

Sat 2/27

7:00 am-2:04 pm

1 stop6h 04m

$329

St. LouisBillings

STL Lambert-St Louis - BIL Billings Logan Intl

STLBIL

Lambert-St Louis

Tue 2/23

9:00 am-7:48 pm

2 stops11h 48m

Billings Logan Intl

Sat 2/27

12:58 pm-9:41 pm

1 stop7h 43m

$334

St. LouisBillings

STL Lambert-St Louis - BIL Billings Logan Intl

STLBIL

Lambert-St Louis

Fri 10/23

2:38 pm-10:25 pm

2 stops8h 47m

Billings Logan Intl

Sun 11/1

12:58 pm-9:09 pm

1 stop7h 11m

$334

Quickest round-trip

St. LouisKalispell

STL Lambert-St Louis - FCA Kalispell Glacier Park

STLFCA

Lambert-St Louis

Sun 10/11

5:10 am-10:04 am

1 stop5h 54m

Kalispell Glacier Park

Sat 10/17

2:30 pm-8:36 pm

1 stop5h 06m

$339

St. LouisKalispell

STL Lambert-St Louis - FCA Kalispell Glacier Park

STLFCA

Lambert-St Louis

Tue 10/20

7:08 am-3:16 pm

1 stop9h 08m

Kalispell Glacier Park

Thu 10/29

6:14 am-12:38 pm

1 stop5h 24m

$339

St. LouisBozeman

STL Lambert-St Louis - BZN Bozeman Gallatin Field

STLBZN

Lambert-St Louis

Sat 10/24

4:42 pm-11:09 pm

1 stop7h 27m

Bozeman Gallatin Field

Tue 10/27

1:55 pm-11:59 pm

1 stop9h 04m

$355

St. LouisBozeman

STL Lambert-St Louis - BZN Bozeman Gallatin Field

STLBZN

Lambert-St Louis

Sat 10/17

7:29 am-12:25 pm

1 stop5h 56m

Bozeman Gallatin Field

Mon 10/19

1:47 pm-9:59 pm

1 stop7h 12m

$355

St. LouisBozeman

STL Lambert-St Louis - BZN Bozeman Gallatin Field

STLBZN

Lambert-St Louis

Sat 1/23

5:20 am-1:35 pm

2 stops9h 15m

Bozeman Gallatin Field

Fri 1/29

11:30 am-6:30 pm

1 stop6h 00m

$384

St. LouisBozeman

STL Lambert-St Louis - BZN Bozeman Gallatin Field

STLBZN

Lambert-St Louis

Sat 1/23

5:20 am-1:35 pm

2 stops9h 15m

Bozeman Gallatin Field

Fri 1/29

11:30 am-9:45 pm

2 stops9h 15m

$399

St. LouisKalispell

STL Lambert-St Louis - FCA Kalispell Glacier Park

STLFCA

Lambert-St Louis

Fri 1/8

3:54 pm-10:57 pm

1 stop8h 03m

Kalispell Glacier Park

Mon 1/11

1:51 pm-2:56 pm

1 stop24h 05m

$419

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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

Other information

What is the cheapest month to fly to Montana?

The cheapest month to fly to Montana from St. Louis is in January. Flight prices, which tend to average around $340, are often lower during this time because this is during the off-season. The month of May is another great option to travel to Montana, with average flight prices from St. Louis averaging around $360.

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

You are more likely to see cheaper flights to Montana from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Montana for around $409 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Montana from St. Louis for as low as $256 on momondo.

Can stopping save me money on St. Louis to Montana flights?

You could potentially save up to 38% on your flight if you consider stops on a St. Louis to Montana flight.

Cheap St. Louis to Montana flight deals and tips

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

Best Price Found	$169
Fastest flight time	4h 40m
Direct flights	None

The best one-way flight to Montana from St. Louis in the past 72 hours is $169. The best round-trip flight deal from St. Louis to Montana found on momondo in the last 72 hours is $329.

The fastest flight from St. Louis to Montana takes 4h 40m

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

Search flight deals

Frequently asked questions about flying from St. Louis to Montana

When did momondo last update prices for flights from Lambert-St Louis Airport to Montana?
Prices for flights from Lambert-St Louis Airport to Montana refresh daily.
How many operators does momondo search for flights from Lambert-St Louis Airport to Montana?
There are 5 operators available for flights from Lambert-St Louis Airport to Montana as of September 2026.
How old do you have to be to fly from Lambert-St Louis Airport to Montana?
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 Lambert-St Louis Airport to Montana.
What documentation or ID do you need to fly to Montana?
The travel and health documents you'll need for your trip to Montana 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 Montana. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from St. Louis to Montana

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

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $179	Free Cancellation	Rating 7.8 8,558 reviews	Search Delta flights
Southwest	PriceFrom $192	Free Cancellation	Rating 8.0 4,194 reviews	Search Southwest flights
United Airlines	PriceFrom $245	Free Cancellation	Rating 7.4 10,202 reviews	Search United Airlines flights
American Airlines	PriceFrom $262	Free Cancellation	Rating 7.1 12,049 reviews	Search American Airlines flights
Alaska Airlines	PriceFrom $287	Free Cancellation	Rating 7.9 12,909 reviews	Search Alaska Airlines flights

Why use momondo?

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

It is quick and easy to find St. Louis to Montana 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 Montana that suits you.

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

All flight searches from St. Louis to Montana on momondo can be filtered to show those which offer flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Montana.

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

Of course. momondo tracks the price of St. Louis to Montana flights. All you need is a valid email address and we will do the rest; it is that quick and easy.