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Cheap flights from Montana to St. Louis from $131

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Montana to St. Louis departing on 10/26. 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

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Find the cheapest flights from Montana to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:30 pm - 12:44 amBZN  Bozeman Gallatin Field-STL Lambert-St Louis
5h 14m1 stop Salt Lake City
Delta Logo
5:33 pm - 11:29 pmSTL  Lambert-St Louis-BZN Bozeman Gallatin Field
6h 56m1 stop Minneapolis St Paul
$261Delta
Wed, Oct 21 - Sat, Oct 24
American Airlines Logo
1:47 pm - 9:59 pmBZN  Bozeman Gallatin Field-STL Lambert-St Louis
7h 12m1 stop Dallas/Fort Worth
American Airlines Logo
7:28 am - 12:25 pmSTL  Lambert-St Louis-BZN Bozeman Gallatin Field
5h 57m1 stop Chicago O'Hare Intl
$261American Airlines
Tue, Oct 20 - Tue, Oct 27
American Airlines Logo
4:16 pm - 11:43 pmBZN  Bozeman Gallatin Field-STL Lambert-St Louis
6h 27m1 stop Dallas/Fort Worth
American Airlines Logo
5:00 am - 12:25 pmSTL  Lambert-St Louis-BZN Bozeman Gallatin Field
8h 25m1 stop Chicago O'Hare Intl
$261American Airlines
Tue, Sep 29 - Tue, Oct 6
Southwest Logo
8:05 am - 5:45 pmBZN  Bozeman Gallatin Field-STL Lambert-St Louis
8h 40m2 stops Denver Intl Austin Bergstrom
Southwest Logo
5:20 am - 12:40 pmSTL  Lambert-St Louis-BZN Bozeman Gallatin Field
8h 20m1 stop Las Vegas Harry Reid Intl
$266Southwest
Tue, Oct 20 - Tue, Oct 27
American Airlines Logo
1:47 pm - 12:19 amBZN  Bozeman Gallatin Field-STL Lambert-St Louis
9h 32m2 stops Dallas/Fort Worth Chicago O'Hare Intl
American Airlines Logo
6:32 am - 12:57 pmSTL  Lambert-St Louis-BZN Bozeman Gallatin Field
7h 25m1 stop Dallas/Fort Worth
$266American Airlines
Wed, Oct 21 - Sat, Oct 24
Southwest Logo
8:05 am - 5:45 pmBZN  Bozeman Gallatin Field-STL Lambert-St Louis
8h 40m2 stops Denver Intl Austin Bergstrom
Southwest Logo
2:10 pm - 10:05 pmSTL  Lambert-St Louis-BZN Bozeman Gallatin Field
8h 55m2 stops Nashville Intl Denver Intl
$271Southwest
Tue, Oct 20 - Tue, Oct 27
Delta Logo
1:08 pm - 9:31 pmBZN  Bozeman Gallatin Field-STL Lambert-St Louis
7h 23m1 stop Salt Lake City
Delta Logo
5:47 pm - 11:19 pmSTL  Lambert-St Louis-BZN Bozeman Gallatin Field
6h 32m1 stop Minneapolis St Paul
$296Delta
Fri, Sep 11 - Mon, Sep 14
United Airlines Logo
2:28 pm - 8:36 pmBIL  Billings Logan Intl-STL Lambert-St Louis
5h 08m1 stop Denver Intl
United Airlines Logo
4:39 pm - 10:30 pmSTL  Lambert-St Louis-BIL Billings Logan Intl
6h 51m1 stop Denver Intl
$329United Airlines
Wed, Oct 21 - Wed, Nov 11
Delta Logo
5:20 am - 1:30 pmBIL  Billings Logan Intl-STL Lambert-St Louis
7h 10m1 stop Salt Lake City
Delta Logo
5:47 pm - 11:15 pmSTL  Lambert-St Louis-BIL Billings Logan Intl
6h 28m1 stop Minneapolis St Paul
$329Delta
Wed, Sep 9 - Wed, Sep 16
United Airlines Logo
5:00 am - 2:17 pmBIL  Billings Logan Intl-STL Lambert-St Louis
8h 17m2 stops Denver Intl Chicago O'Hare Intl
United Airlines Logo
4:39 pm - 10:30 pmSTL  Lambert-St Louis-BIL Billings Logan Intl
6h 51m1 stop Denver Intl
$334United Airlines
Wed, Oct 21 - Wed, Nov 11

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American Airlines flights from Montana to St. Louis

Our best American Airlines deals on Montana to St. Louis flight tickets
American Airlines
Sep 29
BZN4:16 pmBozeman Gallatin Field
6h 27m
1 stop
STL11:43 pmLambert-St Louis
Oct 6
STL5:00 amLambert-St Louis
8h 25m
1 stop
BZN12:25 pmBozeman Gallatin Field
$261
American Airlines
Sep 24
FCA3:26 pmKalispell Glacier Park
7h 17m
1 stop
STL11:43 pmLambert-St Louis
Sep 27
STL7:27 amLambert-St Louis
6h 17m
1 stop
FCA12:44 pmKalispell Glacier Park
$339
American Airlines
Sep 24
FCA3:26 pmKalispell Glacier Park
7h 17m
1 stop
STL11:43 pmLambert-St Louis
Sep 29
STL5:00 amLambert-St Louis
10h 33m
2 stops
FCA2:33 pmKalispell Glacier Park
$344

Southwest flights from Montana to St. Louis

Our best Southwest deals on Montana to St. Louis flight tickets
Southwest
Oct 20
BZN8:05 amBozeman Gallatin Field
8h 40m
2 stops
STL5:45 pmLambert-St Louis
Oct 27
STL5:20 amLambert-St Louis
8h 20m
1 stop
BZN12:40 pmBozeman Gallatin Field
$266
Southwest
Oct 20
BZN8:05 amBozeman Gallatin Field
8h 40m
2 stops
STL5:45 pmLambert-St Louis
Oct 27
STL2:10 pmLambert-St Louis
8h 55m
2 stops
BZN10:05 pmBozeman Gallatin Field
$271
Southwest
Sep 29
BZN6:55 amBozeman Gallatin Field
7h 10m
1 stop
STL3:05 pmLambert-St Louis
Oct 6
STL2:25 pmLambert-St Louis
8h 40m
2 stops
BZN10:05 pmBozeman Gallatin Field
$313

momondo Fare Finder

 
Customize your flight search to find flights from Montana 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 August 16, 2026.
Use the filters below to find and compare flights from Montana to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BozemanSt. Louis

BZN Bozeman Gallatin Field - STL Lambert-St Louis

BZNSTL

Bozeman Gallatin Field

Wed 10/21

6:30 pm-12:44 am

1 stop5h 14m

Lambert-St Louis

Sat 10/24

5:33 pm-11:29 pm

1 stop6h 56m

$261

BozemanSt. Louis

BZN Bozeman Gallatin Field - STL Lambert-St Louis

BZNSTL

Bozeman Gallatin Field

Tue 10/20

1:47 pm-9:59 pm

1 stop7h 12m

Lambert-St Louis

Tue 10/27

7:28 am-12:25 pm

1 stop5h 57m

$261

BozemanSt. Louis

BZN Bozeman Gallatin Field - STL Lambert-St Louis

BZNSTL

Bozeman Gallatin Field

Tue 9/29

4:16 pm-11:43 pm

1 stop6h 27m

Lambert-St Louis

Tue 10/6

5:00 am-12:25 pm

1 stop8h 25m

$261

BozemanSt. Louis

BZN Bozeman Gallatin Field - STL Lambert-St Louis

BZNSTL

Bozeman Gallatin Field

Tue 10/20

8:05 am-5:45 pm

2 stops8h 40m

Lambert-St Louis

Tue 10/27

5:20 am-12:40 pm

1 stop8h 20m

$266

BozemanSt. Louis

BZN Bozeman Gallatin Field - STL Lambert-St Louis

BZNSTL

Bozeman Gallatin Field

Wed 10/21

1:47 pm-12:19 am

2 stops9h 32m

Lambert-St Louis

Sat 10/24

6:32 am-12:57 pm

1 stop7h 25m

$266

BozemanSt. Louis

BZN Bozeman Gallatin Field - STL Lambert-St Louis

BZNSTL

Bozeman Gallatin Field

Tue 10/20

8:05 am-5:45 pm

2 stops8h 40m

Lambert-St Louis

Tue 10/27

2:10 pm-10:05 pm

2 stops8h 55m

$271

BozemanSt. Louis

BZN Bozeman Gallatin Field - STL Lambert-St Louis

BZNSTL

Bozeman Gallatin Field

Fri 9/11

1:08 pm-9:31 pm

1 stop7h 23m

Lambert-St Louis

Mon 9/14

5:47 pm-11:19 pm

1 stop6h 32m

$296
Quickest round-trip

BillingsSt. Louis

BIL Billings Logan Intl - STL Lambert-St Louis

BILSTL

Billings Logan Intl

Wed 10/21

2:28 pm-8:36 pm

1 stop5h 08m

Lambert-St Louis

Wed 11/11

4:39 pm-10:30 pm

1 stop6h 51m

$329

BillingsSt. Louis

BIL Billings Logan Intl - STL Lambert-St Louis

BILSTL

Billings Logan Intl

Wed 9/9

5:20 am-1:30 pm

1 stop7h 10m

Lambert-St Louis

Wed 9/16

5:47 pm-11:15 pm

1 stop6h 28m

$329

BillingsSt. Louis

BIL Billings Logan Intl - STL Lambert-St Louis

BILSTL

Billings Logan Intl

Wed 10/21

5:00 am-2:17 pm

2 stops8h 17m

Lambert-St Louis

Wed 11/11

4:39 pm-10:30 pm

1 stop6h 51m

$334

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Montana 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, February is the cheapest month to fly from Montana to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $345. The month of January is another great option to travel to St. Louis, with average flight prices from Montana averaging around $370.

Cheap Montana to St. Louis flight deals and tips

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

Fastest flight time

4h 38m

Direct flights

None
The fastest flight from Montana to St. Louis takes 4h 38m
There are no direct flights from Montana to St. Louis. There are no popular flight routes from Montana to St. Louis.
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Frequently asked questions about flying from Montana to St. Louis

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

    Prices for flights from Montana to Lambert-St Louis Airport were last updated today.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Montana 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.

Best airlines flying from Montana to St. Louis

Compare and see reviews for airlines that fly from Montana to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $164Free CancellationRating
7.8
8,502 reviews
Search Delta flights
SouthwestPriceFrom $210Free CancellationRating
8.0
4,217 reviews
Search Southwest flights
United AirlinesPriceFrom $268Free CancellationRating
7.4
10,105 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
St. Peters
Maryland Heights
Collinsville
Florissant
Alton
O'Fallon
Farmington
Clayton
Fenton
Festus
Wentzville
Eureka
Edwardsville
Litchfield
Grafton
Shrewsbury

Why use momondo?

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

Finding the right flight to St. Louis from Montana is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to St. Louis quick and easy, saving you time and money.

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

Yes. momondo allows you to filter the results for Montana to St. Louis flights to just show those with flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to St. Louis from Montana. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes. momondo can track prices for Montana to St. Louis flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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