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

Delta, United Airlines, and American 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.

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 November 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.

$185 Cheap Flights from St. Louis to Montana in 2026/27

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 - 8:49 pmSTL Lambert-St Louis-BIL Billings Logan Intl

6h 55m1 stop Dallas/Fort Worth

7:00 am - 1:55 pmBIL Billings Logan Intl-STL Lambert-St Louis

5h 55m1 stop Dallas/Fort Worth

$349American Airlines

Thu, Dec 10 - Sun, Dec 13

2:50 pm - 8:59 pmSTL Lambert-St Louis-BIL Billings Logan Intl

7h 09m1 stop Denver Intl

2:33 pm - 8:57 pmBIL Billings Logan Intl-STL Lambert-St Louis

5h 24m1 stop Denver Intl

$349United Airlines

Fri, Dec 4 - Sun, Dec 6

8:40 am - 1:24 pmSTL Lambert-St Louis-BIL Billings Logan Intl

5h 44m1 stop Denver Intl

2:33 pm - 8:57 pmBIL Billings Logan Intl-STL Lambert-St Louis

5h 24m1 stop Denver Intl

$349United Airlines

Wed, Dec 2 - Wed, Dec 9

2:54 pm - 8:49 pmSTL Lambert-St Louis-BIL Billings Logan Intl

6h 55m1 stop Dallas/Fort Worth

1:28 pm - 10:20 pmBIL Billings Logan Intl-STL Lambert-St Louis

7h 52m1 stop Dallas/Fort Worth

$359American Airlines

Thu, Dec 3 - Thu, Dec 10

4:30 pm - 8:38 pmSTL Lambert-St Louis-BZN Bozeman Gallatin Field

5h 08m1 stop Minneapolis St Paul

6:00 am - 2:33 pmBZN Bozeman Gallatin Field-STL Lambert-St Louis

7h 33m1 stop Minneapolis St Paul

$369Delta

Sat, Feb 20 - Wed, Feb 24

4:30 pm - 8:38 pmSTL Lambert-St Louis-BZN Bozeman Gallatin Field

5h 08m1 stop Minneapolis St Paul

6:00 am - 2:33 pmBZN Bozeman Gallatin Field-STL Lambert-St Louis

7h 33m1 stop Minneapolis St Paul

$369Delta

Sat, Feb 13 - Thu, Feb 18

6:15 am - 10:25 amSTL Lambert-St Louis-BZN Bozeman Gallatin Field

5h 10m1 stop Denver Intl

3:30 pm - 9:10 pmBZN Bozeman Gallatin Field-STL Lambert-St Louis

4h 40m1 stop Denver Intl

$369Southwest

Tue, Nov 24 - Tue, Dec 1

6:15 am - 10:25 amSTL Lambert-St Louis-BZN Bozeman Gallatin Field

5h 10m1 stop Denver Intl

11:20 am - 9:20 pmBZN Bozeman Gallatin Field-STL Lambert-St Louis

9h 00m2 stops Denver Intl Las Vegas Harry Reid Intl

$374Southwest

Tue, Nov 24 - Tue, Dec 1

5:45 pm - 9:29 pmSTL Lambert-St Louis-MSO Missoula Johnson-Bell Field

28h 44m1 stop Las Vegas Harry Reid Intl

10:09 pm - 4:42 pmMSO Missoula Johnson-Bell Field-STL Lambert-St Louis

17h 33m1 stop Las Vegas Harry Reid Intl

$377Multiple Airlines

Thu, Dec 17 - Mon, Dec 21

9:09 am - 8:11 pmSTL Lambert-St Louis-FCA Kalispell Glacier Park

12h 02m2 stops Dallas/Fort Worth Las Vegas Harry Reid Intl

11:22 am - 4:20 pmFCA Kalispell Glacier Park-STL Lambert-St Louis

27h 58m1 stop Las Vegas Harry Reid Intl

$728Multiple Airlines

Tue, Nov 24 - Sat, Nov 28

Cheap last minute flights

Enter your travel dates to find the best prices.

6:30 am - 10:35 amSTL Lambert-St Louis-BZN Bozeman Gallatin Field

5h 05m1 stop Denver Intl

11:20 am - 6:35 pmBZN Bozeman Gallatin Field-STL Lambert-St Louis

6h 15m1 stop Denver Intl

$558Southwest

Wed, Nov 11 - Tue, Nov 17

5:55 am - 2:50 pmSTL Lambert-St Louis-BZN Bozeman Gallatin Field

9h 55m2 stops Phoenix Sky Harbor Intl Denver Intl

6:45 am - 2:40 pmBZN Bozeman Gallatin Field-STL Lambert-St Louis

6h 55m1 stop Las Vegas Harry Reid Intl

$563Southwest

Wed, Nov 11 - Tue, Nov 17

5:55 am - 2:50 pmSTL Lambert-St Louis-BZN Bozeman Gallatin Field

9h 55m2 stops Phoenix Sky Harbor Intl Denver Intl

8:05 am - 5:25 pmBZN Bozeman Gallatin Field-STL Lambert-St Louis

8h 20m2 stops Denver Intl Dallas Love Field

$568Southwest

Wed, Nov 11 - Tue, Nov 17

6:00 am - 12:15 pmSTL Lambert-St Louis-FCA Kalispell Glacier Park

7h 15m1 stop Seattle/Tacoma Intl

1:55 pm - 11:59 pmFCA Kalispell Glacier Park-STL Lambert-St Louis

9h 04m1 stop Seattle/Tacoma Intl

$644Alaska Airlines

Mon, Nov 9 - Thu, Nov 12

5:00 am - 11:45 amSTL Lambert-St Louis-BZN Bozeman Gallatin Field

7h 45m1 stop Chicago O'Hare Intl

10:40 am - 4:57 pmBZN Bozeman Gallatin Field-STL Lambert-St Louis

5h 17m1 stop Denver Intl

$669United Airlines

Tue, Nov 10 - Wed, Nov 11

9:40 am - 9:30 pmSTL Lambert-St Louis-BZN Bozeman Gallatin Field

12h 50m2 stops Chicago O'Hare Intl Denver Intl

12:48 pm - 7:23 pmBZN Bozeman Gallatin Field-STL Lambert-St Louis

5h 35m1 stop Chicago O'Hare Intl

$674United Airlines

Tue, Nov 10 - Wed, Nov 11

5:00 am - 3:30 pmSTL Lambert-St Louis-BZN Bozeman Gallatin Field

11h 30m2 stops Chicago O'Hare Intl Denver Intl

10:40 am - 9:40 pmBZN Bozeman Gallatin Field-STL Lambert-St Louis

10h 00m2 stops Denver Intl Chicago O'Hare Intl

$679United Airlines

Tue, Nov 10 - Wed, Nov 11

4:39 pm - 9:14 pmSTL Lambert-St Louis-BIL Billings Logan Intl

5h 35m1 stop Denver Intl

7:00 am - 12:38 pmBIL Billings Logan Intl-STL Lambert-St Louis

4h 38m1 stop Denver Intl

$833United Airlines

Mon, Nov 9 - Wed, Nov 11

2:21 pm - 10:20 pmSTL Lambert-St Louis-BIL Billings Logan Intl

8h 59m2 stops Detroit Metropolitan Wayne County Salt Lake City

5:35 am - 2:41 pmBIL Billings Logan Intl-STL Lambert-St Louis

8h 06m2 stops Salt Lake City Minneapolis St Paul

$844Delta

Mon, Nov 9 - Wed, Nov 11

2:54 pm - 11:59 pmSTL Lambert-St Louis-FCA Kalispell Glacier Park

10h 05m2 stops Dallas/Fort Worth Seattle/Tacoma Intl

1:55 pm - 11:59 pmFCA Kalispell Glacier Park-STL Lambert-St Louis

9h 04m1 stop Seattle/Tacoma Intl

$902Alaska Airlines

Mon, Nov 9 - Thu, Nov 12

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Southwest flights from St. Louis to Montana

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

Southwest

Dec 9

STL5:55 amLambert-St Louis

9h 55m

2 stops

BZN2:50 pmBozeman Gallatin Field

Dec 12

BZN7:30 amBozeman Gallatin Field

7h 50m

2 stops

STL4:20 pmLambert-St Louis

$379

Southwest

Feb 2

STL11:50 amLambert-St Louis

11h 20m

2 stops

BZN10:10 pmBozeman Gallatin Field

Feb 4

BZN12:55 pmBozeman Gallatin Field

8h 55m

2 stops

STL10:50 pmLambert-St Louis

$421

Southwest

Jan 15

STL8:30 amLambert-St Louis

8h 05m

1 stop

BZN3:35 pmBozeman Gallatin Field

Jan 19

BZN11:30 amBozeman Gallatin Field

10h 15m

1 stop

STL10:45 pmLambert-St Louis

$441

Alaska Airlines flights from St. Louis to Montana

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

Alaska Airlines

Dec 10

STL6:04 amLambert-St Louis

11h 07m

1 stop

GTF4:11 pmGreat Falls

Dec 13

GTF4:51 pmGreat Falls

21h 15m

1 stop

STL3:06 pmLambert-St Louis

$398

Alaska Airlines

Jan 7

STL4:06 pmLambert-St Louis

7h 47m

1 stop

FCA10:53 pmKalispell Glacier Park

Jan 13

FCA7:57 pmKalispell Glacier Park

18h 11m

1 stop

STL3:08 pmLambert-St Louis

$426

Alaska Airlines

Dec 25

STL6:00 amLambert-St Louis

7h 19m

1 stop

FCA12:19 pmKalispell Glacier Park

Jan 7

FCA7:57 pmKalispell Glacier Park

18h 11m

1 stop

STL3:08 pmLambert-St Louis

$436

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

Thu 12/10

2:54 pm-8:49 pm

1 stop6h 55m

Billings Logan Intl

Sun 12/13

7:00 am-1:55 pm

1 stop5h 55m

$349

St. LouisBillings

STL Lambert-St Louis - BIL Billings Logan Intl

STLBIL

Lambert-St Louis

Fri 12/4

2:50 pm-8:59 pm

1 stop7h 09m

Billings Logan Intl

Sun 12/6

2:33 pm-8:57 pm

1 stop5h 24m

$349

St. LouisBillings

STL Lambert-St Louis - BIL Billings Logan Intl

STLBIL

Lambert-St Louis

Wed 12/2

8:40 am-1:24 pm

1 stop5h 44m

Billings Logan Intl

Wed 12/9

2:33 pm-8:57 pm

1 stop5h 24m

$349

St. LouisBillings

STL Lambert-St Louis - BIL Billings Logan Intl

STLBIL

Lambert-St Louis

Thu 12/3

2:54 pm-8:49 pm

1 stop6h 55m

Billings Logan Intl

Thu 12/10

1:28 pm-10:20 pm

1 stop7h 52m

$359

St. LouisBozeman

STL Lambert-St Louis - BZN Bozeman Gallatin Field

STLBZN

Lambert-St Louis

Sat 2/20

4:30 pm-8:38 pm

1 stop5h 08m

Bozeman Gallatin Field

Wed 2/24

6:00 am-2:33 pm

1 stop7h 33m

$369

St. LouisBozeman

STL Lambert-St Louis - BZN Bozeman Gallatin Field

STLBZN

Lambert-St Louis

Sat 2/13

4:30 pm-8:38 pm

1 stop5h 08m

Bozeman Gallatin Field

Thu 2/18

6:00 am-2:33 pm

1 stop7h 33m

$369

Quickest round-trip

St. LouisBozeman

STL Lambert-St Louis - BZN Bozeman Gallatin Field

STLBZN

Lambert-St Louis

Tue 11/24

6:15 am-10:25 am

1 stop5h 10m

Bozeman Gallatin Field

Tue 12/1

3:30 pm-9:10 pm

1 stop4h 40m

$369

St. LouisBozeman

STL Lambert-St Louis - BZN Bozeman Gallatin Field

STLBZN

Lambert-St Louis

Tue 11/24

6:15 am-10:25 am

1 stop5h 10m

Bozeman Gallatin Field

Tue 12/1

11:20 am-9:20 pm

2 stops9h 00m

$374

St. LouisMissoula

STL Lambert-St Louis - MSO Missoula Johnson-Bell Field

STLMSO

Lambert-St Louis

Thu 12/17

5:45 pm-9:29 pm

1 stop28h 44m

Missoula Johnson-Bell Field

Mon 12/21

10:09 pm-4:42 pm

1 stop17h 33m

$377

St. LouisKalispell

STL Lambert-St Louis - FCA Kalispell Glacier Park

STLFCA

Lambert-St Louis

Tue 11/24

9:09 am-8:11 pm

2 stops12h 02m

Kalispell Glacier Park

Sat 11/28

11:22 am-4:20 pm

1 stop27h 58m

$728

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

What is the cheapest month to fly to Montana?

The cheapest month to fly to Montana from St. Louis is in April. Flight prices, which tend to average around $362, 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 $372.

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 $405 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 $281 on momondo.

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

You could potentially save up to 48% 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	$185
Fastest flight time	5h 05m
Direct flights	None

The best one-way flight to Montana from St. Louis in the past 72 hours is $185. The best round-trip flight deal from St. Louis to Montana found on momondo in the last 72 hours is $349.

The fastest flight from St. Louis to Montana takes 5h 05m

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 November 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 8,701 reviews	Search Delta flights
Southwest	PriceFrom $192	Free Cancellation	Rating 8.0 4,212 reviews	Search Southwest flights
American Airlines	PriceFrom $210	Free Cancellation	Rating 7.0 12,232 reviews	Search American Airlines flights
United Airlines	PriceFrom $245	Free Cancellation	Rating 7.3 10,464 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom $287	Free Cancellation	Rating 7.9 13,143 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.