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, American Airlines and Delta 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 43% 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 May 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.

$136 Cheap Flights from St. Louis to Montana in 2026

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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.

5:42 pm - 11:16 pm

STL

BZN

6h 34m

1 stop

6:00 am - 1:34 pm

BZN

STL

6h 34m

1 stop

$271Delta

Mon, Aug 10 - Sat, Aug 15

5:36 pm - 11:44 pm

STL

BZN

7h 08m

1 stop

6:00 am - 2:31 pm

BZN

STL

7h 31m

1 stop

$285Delta

Tue, May 26 - Wed, Jun 3

5:10 am - 9:37 am

STL

BZN

5h 27m

1 stop

10:33 am - 9:30 pm

BZN

STL

9h 57m

2 stops

$290United Airlines

Tue, May 26 - Tue, Jun 2

6:00 am - 11:29 am

STL

FCA

6h 29m

1 stop

12:35 pm - 9:30 pm

FCA

STL

7h 55m

1 stop

$297United Airlines

Wed, Jun 3 - Mon, Jun 8

5:10 am - 9:37 am

STL

BZN

5h 27m

1 stop

4:29 pm - 11:57 pm

BZN

STL

6h 28m

1 stop

$300United Airlines

Mon, Jun 29 - Fri, Jul 3

5:33 pm - 10:43 pm

STL

BZN

6h 10m

1 stop

5:38 pm - 11:57 pm

BZN

STL

5h 19m

1 stop

$301United Airlines

Sat, Jun 27 - Wed, Jul 1

5:25 am - 11:35 am

STL

FCA

7h 10m

1 stop

4:48 pm - 12:16 am

FCA

STL

6h 28m

1 stop

$303American Airlines

Wed, Jun 3 - Mon, Jun 8

3:17 pm - 10:59 pm

STL

BZN

8h 42m

1 stop

11:16 am - 11:59 pm

BZN

STL

11h 43m

1 stop

$305Alaska Airlines

Thu, Oct 1 - Tue, Oct 6

5:25 am - 11:35 am

STL

FCA

7h 10m

1 stop

3:50 pm - 11:58 pm

FCA

STL

7h 08m

1 stop

$309American Airlines

Wed, May 27 - Sat, May 30

7:41 pm - 6:12 pm

STL

GTF

23h 31m

1 stop

6:52 pm - 3:16 pm

GTF

STL

19h 24m

1 stop

$429Alaska Airlines

Tue, May 26 - Tue, Jun 2

Alaska Airlines flights from St. Louis to Montana

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

Alaska Airlines

Oct 1

STL3:17 pmLambert-St Louis

8h 42m

1 stop

BZN10:59 pmBozeman Gallatin Field

Oct 6

BZN11:16 amBozeman Gallatin Field

11h 43m

1 stop

STL11:59 pmLambert-St Louis

$305

Alaska Airlines

Oct 2

STL6:00 amLambert-St Louis

9h 46m

1 stop

BZN2:46 pmBozeman Gallatin Field

Oct 9

BZN11:16 amBozeman Gallatin Field

11h 43m

1 stop

STL11:59 pmLambert-St Louis

$339

Alaska Airlines

May 20

STL7:41 pmLambert-St Louis

16h 10m

1 stop

FCA10:51 amKalispell Glacier Park

May 28

FCA11:33 amKalispell Glacier Park

6h 12m

1 stop

STL6:45 pmLambert-St Louis

$369

Delta flights from St. Louis to Montana

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

Delta

Aug 10

STL5:42 pmLambert-St Louis

6h 34m

1 stop

BZN11:16 pmBozeman Gallatin Field

Aug 15

BZN6:00 amBozeman Gallatin Field

6h 34m

1 stop

STL1:34 pmLambert-St Louis

$271

Delta

May 26

STL5:36 pmLambert-St Louis

7h 08m

1 stop

BZN11:44 pmBozeman Gallatin Field

Jun 3

BZN6:00 amBozeman Gallatin Field

7h 31m

1 stop

STL2:31 pmLambert-St Louis

$285

Delta

Jun 6

STL6:45 amLambert-St Louis

11h 42m

2 stops

FCA5:27 pmKalispell Glacier Park

Jun 12

FCA6:10 pmKalispell Glacier Park

5h 33m

1 stop

STL12:43 amLambert-St Louis

$302

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Mon 8/10

5:42 pm-11:16 pm

1 stop6h 34m

Bozeman Gallatin Field

Sat 8/15

6:00 am-1:34 pm

1 stop6h 34m

$271

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Tue 5/26

5:36 pm-11:44 pm

1 stop7h 08m

Bozeman Gallatin Field

Wed 6/3

6:00 am-2:31 pm

1 stop7h 31m

$285

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Tue 5/26

5:10 am-9:37 am

1 stop5h 27m

Bozeman Gallatin Field

Tue 6/2

10:33 am-9:30 pm

2 stops9h 57m

$290

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Wed 6/3

6:00 am-11:29 am

1 stop6h 29m

Kalispell Glacier Park

Mon 6/8

12:35 pm-9:30 pm

1 stop7h 55m

$297

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Mon 6/29

5:10 am-9:37 am

1 stop5h 27m

Bozeman Gallatin Field

Fri 7/3

4:29 pm-11:57 pm

1 stop6h 28m

$300

Quickest round-trip

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Sat 6/27

5:33 pm-10:43 pm

1 stop6h 10m

Bozeman Gallatin Field

Wed 7/1

5:38 pm-11:57 pm

1 stop5h 19m

$301

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Wed 6/3

5:25 am-11:35 am

1 stop7h 10m

Kalispell Glacier Park

Mon 6/8

4:48 pm-12:16 am

1 stop6h 28m

$303

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Thu 10/1

3:17 pm-10:59 pm

1 stop8h 42m

Bozeman Gallatin Field

Tue 10/6

11:16 am-11:59 pm

1 stop11h 43m

$305

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Wed 5/27

5:25 am-11:35 am

1 stop7h 10m

Kalispell Glacier Park

Sat 5/30

3:50 pm-11:58 pm

1 stop7h 08m

$309

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Tue 5/26

7:41 pm-6:12 pm

1 stop23h 31m

Great Falls

Tue 6/2

6:52 pm-3:16 pm

1 stop19h 24m

$429

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 July. Flight prices, which tend to average around $142, are often lower during this time because this is during the off-season. The month of October is another great option to travel to Montana, with average flight prices from St. Louis averaging around $149.

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 $377 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 32% 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

Fastest flight time	4h 42m
Direct flights	None

The fastest flight from St. Louis to Montana takes 4h 42m

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 May 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 7.9 8,452 reviews	Search Delta flights
Southwest	PriceFrom $187	Free Cancellation	Rating 8.0 4,299 reviews	Search Southwest flights
American Airlines	PriceFrom $214	Free Cancellation	Rating 7.1 11,664 reviews	Search American Airlines flights
Alaska Airlines	PriceFrom $238	Free Cancellation	Rating 7.9 12,361 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $242	Free Cancellation	Rating 7.4 9,711 reviews	Search United 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.