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Cheap flights from Montana to St. Louis from $106

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 3/4. 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
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.
United Airlines Logo
2:26 pm - 8:42 pm
BZN
-
STL
5h 16m
1 stop
United Airlines Logo
5:15 am - 9:28 am
STL
-
BZN
5h 13m
1 stop
$211United Airlines
Sat, May 30 - Sat, Jun 6
United Airlines Logo
2:41 pm - 8:26 pm
BZN
-
STL
4h 45m
1 stop
United Airlines Logo
8:41 am - 1:36 pm
STL
-
BZN
5h 55m
1 stop
$225United Airlines
Fri, Feb 27 - Tue, Mar 3
United Airlines Logo
10:50 am - 10:59 pm
BZN
-
STL
11h 09m
2 stops
United Airlines Logo
8:41 am - 1:36 pm
STL
-
BZN
5h 55m
1 stop
$230United Airlines
Fri, Feb 27 - Tue, Mar 3
American Airlines Logo
3:36 pm - 11:22 pm
BZN
-
STL
6h 46m
1 stop
American Airlines Logo
7:00 am - 2:46 pm
STL
-
BZN
8h 46m
1 stop
$239American Airlines
Wed, Feb 25 - Sun, Mar 1
United Airlines Logo
6:20 am - 1:14 pm
BZN
-
STL
5h 54m
1 stop
United Airlines Logo
9:55 am - 9:12 pm
STL
-
BZN
12h 17m
2 stops
$244United Airlines
Thu, Feb 26 - Mon, Mar 2
Alaska Airlines Logo
1:52 pm - 11:59 pm
FCA
-
STL
9h 07m
1 stop
Alaska Airlines Logo
7:00 am - 7:46 pm
STL
-
FCA
13h 46m
1 stop
$257Alaska Airlines
Fri, Apr 10 - Wed, Apr 15
United Airlines Logo
12:44 pm - 9:07 pm
BZN
-
STL
7h 23m
1 stop
United Airlines Logo
5:15 am - 9:42 am
STL
-
BZN
5h 27m
1 stop
$278United Airlines
Mon, Mar 9 - Mon, Mar 16
Delta Logo
5:59 am - 11:32 am
BZN
-
STL
4h 33m
1 stop
Delta Logo
6:45 pm - 12:09 am
STL
-
BZN
6h 24m
1 stop
$288Delta
Thu, Apr 30 - Sun, May 3
Alaska Airlines Logo
7:53 pm - 1:51 pm
FCA
-
STL
16h 58m
1 stop
Alaska Airlines Logo
7:00 am - 7:46 pm
STL
-
FCA
13h 46m
1 stop
$297Alaska Airlines
Wed, Mar 11 - Wed, Mar 18
Delta Logo
6:29 pm - 12:30 am
BZN
-
STL
5h 01m
1 stop
Delta Logo
7:59 pm - 11:59 pm
STL
-
BZN
5h 00m
1 stop
$298Delta
Fri, May 8 - Mon, May 11

Alaska Airlines flights from Montana to St. Louis

Our best Alaska Airlines deals on Montana to St. Louis flight tickets
Alaska Airlines
Apr 10
FCA1:52 pmKalispell Glacier Park
9h 07m
1 stop
STL11:59 pmLambert-St Louis
Apr 15
STL7:00 amLambert-St Louis
13h 46m
1 stop
FCA7:46 pmKalispell Glacier Park
$257
Alaska Airlines
Mar 11
FCA7:53 pmKalispell Glacier Park
16h 58m
1 stop
STL1:51 pmLambert-St Louis
Mar 18
STL7:00 amLambert-St Louis
13h 46m
1 stop
FCA7:46 pmKalispell Glacier Park
$297
Alaska Airlines
Feb 25
MSO6:23 amMissoula Johnson-Bell Field
6h 28m
1 stop
STL1:51 pmLambert-St Louis
Mar 25
STL7:00 amLambert-St Louis
9h 35m
1 stop
MSO3:35 pmMissoula Johnson-Bell Field
$298

Delta flights from Montana to St. Louis

Our best Delta deals on Montana to St. Louis flight tickets
Delta
May 8
BZN6:29 pmBozeman Gallatin Field
5h 01m
1 stop
STL12:30 amLambert-St Louis
May 11
STL7:59 pmLambert-St Louis
5h 00m
1 stop
BZN11:59 pmBozeman Gallatin Field
$298
Delta
Mar 9
MSO6:04 pmMissoula Johnson-Bell Field
5h 17m
1 stop
STL12:21 amLambert-St Louis
Mar 10
STL12:28 pmLambert-St Louis
8h 34m
1 stop
MSO8:02 pmMissoula Johnson-Bell Field
$299
Delta
May 5
BIL6:18 pmBillings Logan Intl
5h 07m
1 stop
STL12:25 amLambert-St Louis
May 24
STL5:47 pmLambert-St Louis
6h 16m
1 stop
BIL11:03 pmBillings Logan Intl
$304

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 February 11, 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

BozemanSt. Louis

BZN - STL

BZNSTL

Bozeman Gallatin Field

Sat 5/30

2:26 pm-8:42 pm

1 stop5h 16m

Lambert-St Louis

Sat 6/6

5:15 am-9:28 am

1 stop5h 13m

$211

BozemanSt. Louis

BZN - STL

BZNSTL

Bozeman Gallatin Field

Fri 2/27

2:41 pm-8:26 pm

1 stop4h 45m

Lambert-St Louis

Tue 3/3

8:41 am-1:36 pm

1 stop5h 55m

$225

BozemanSt. Louis

BZN - STL

BZNSTL

Bozeman Gallatin Field

Fri 2/27

10:50 am-10:59 pm

2 stops11h 09m

Lambert-St Louis

Tue 3/3

8:41 am-1:36 pm

1 stop5h 55m

$230

BozemanSt. Louis

BZN - STL

BZNSTL

Bozeman Gallatin Field

Wed 2/25

3:36 pm-11:22 pm

1 stop6h 46m

Lambert-St Louis

Sun 3/1

7:00 am-2:46 pm

1 stop8h 46m

$239

BozemanSt. Louis

BZN - STL

BZNSTL

Bozeman Gallatin Field

Thu 2/26

6:20 am-1:14 pm

1 stop5h 54m

Lambert-St Louis

Mon 3/2

9:55 am-9:12 pm

2 stops12h 17m

$244

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Fri 4/10

1:52 pm-11:59 pm

1 stop9h 07m

Lambert-St Louis

Wed 4/15

7:00 am-7:46 pm

1 stop13h 46m

$257

BozemanSt. Louis

BZN - STL

BZNSTL

Bozeman Gallatin Field

Mon 3/9

12:44 pm-9:07 pm

1 stop7h 23m

Lambert-St Louis

Mon 3/16

5:15 am-9:42 am

1 stop5h 27m

$278

BozemanSt. Louis

BZN - STL

BZNSTL

Bozeman Gallatin Field

Thu 4/30

5:59 am-11:32 am

1 stop4h 33m

Lambert-St Louis

Sun 5/3

6:45 pm-12:09 am

1 stop6h 24m

$288

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Wed 3/11

7:53 pm-1:51 pm

1 stop16h 58m

Lambert-St Louis

Wed 3/18

7:00 am-7:46 pm

1 stop13h 46m

$297

BozemanSt. Louis

BZN - STL

BZNSTL

Bozeman Gallatin Field

Fri 5/8

6:29 pm-12:30 am

1 stop5h 01m

Lambert-St Louis

Mon 5/11

7:59 pm-11:59 pm

1 stop5h 00m

$298

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

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 $287. The month of April is another great option to travel to St. Louis, with average flight prices from Montana averaging around $319.

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 33m

Direct flights

None
The fastest flight from Montana to St. Louis takes 4h 33m
There are no direct flights from Montana to St. Louis. There are no popular flight routes from Montana to St. Louis.
Search flight deals

  • 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 $128Free CancellationRating
7.9
8,181 reviews
Search Delta flights
SouthwestPriceFrom $210Free CancellationRating
8.0
4,280 reviews
Search Southwest flights
United AirlinesPriceFrom $249Free CancellationRating
7.4
9,279 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
Hermann
Fairview Heights
Maryland Heights
Florissant
O'Fallon
Collinsville
St. Peters
Fenton
Wentzville
Alton
Farmington
Clayton
Edwardsville
Eureka
Festus
Litchfield
Glencoe
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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