$159 Find Cheap Flights from St. Louis to Montana - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Montana departing on 9/27. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Flight Deals

Cheap Flights from St. Louis to Montana

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Bozeman
Bozeman1 stop$342
Kalispell
Kalispell1 stop$309
Missoula
Missoula2 stops$418
Billings
Billings1 stop$329
Great Falls
Great Falls1 stop$318
Helena
Helena1 stop$334
West Yellowstone
West Yellowstone1 stop$538
Butte
Butte2 stops$344
Bozeman
Bozeman1 stop$342
Kalispell
Kalispell1 stop$309
Missoula
Missoula2 stops$418
Billings
Billings1 stop$329
Great Falls
Great Falls1 stop$318
Helena
Helena1 stop$334
West Yellowstone
West Yellowstone1 stop$538
Butte
Butte2 stops$344

Book Cheap St. Louis to Montana Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Montana that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Montana

Fri, Aug 21 - Fri, Aug 28
Delta Logo
5:34 pm - 11:56 pm
STL
-
FCA
7h 22m
1 stop
Delta Logo
5:15 am - 1:38 pm
FCA
-
STL
7h 23m
1 stop
$309Delta
Wed, Sep 30 - Sat, Oct 3
American Airlines Logo
5:00 am - 2:33 pm
STL
-
FCA
10h 33m
2 stops
American Airlines Logo
3:26 pm - 11:43 pm
FCA
-
STL
7h 17m
1 stop
$314American Airlines
Wed, Oct 7 - Sat, Oct 10
Delta Logo
7:55 am - 12:33 pm
STL
-
GTF
5h 38m
1 stop
Delta Logo
5:40 am - 1:32 pm
GTF
-
STL
6h 52m
1 stop
$318Delta
Wed, Aug 19 - Tue, Aug 25
United Airlines Logo
8:50 am - 9:12 pm
STL
-
GTF
13h 22m
2 stops
United Airlines Logo
6:15 am - 12:40 pm
GTF
-
STL
5h 25m
1 stop
$324United Airlines
Wed, Aug 26 - Sun, Aug 30
United Airlines Logo
9:00 am - 1:21 pm
STL
-
BIL
5h 21m
1 stop
United Airlines Logo
4:40 pm - 11:31 pm
BIL
-
STL
5h 51m
1 stop
$329United Airlines
Thu, Aug 20 - Thu, Aug 27
American Airlines Logo
6:00 am - 10:50 am
STL
-
BIL
5h 50m
1 stop
American Airlines Logo
1:13 pm - 10:41 pm
BIL
-
STL
8h 28m
1 stop
$344American Airlines
Tue, Sep 15 - Tue, Sep 22
Southwest Logo
4:05 pm - 8:00 pm
STL
-
BZN
4h 55m
1 stop
Southwest Logo
2:00 pm - 9:10 pm
BZN
-
STL
6h 10m
1 stop
$347Southwest
Tue, Sep 15 - Tue, Sep 22
Southwest Logo
3:45 pm - 10:25 pm
STL
-
BZN
7h 40m
2 stops
Southwest Logo
2:00 pm - 9:10 pm
BZN
-
STL
6h 10m
1 stop
$352Southwest
Sat, Dec 5 - Wed, Dec 9
Alaska Airlines Logo
7:00 am - 3:31 pm
STL
-
HLN
9h 31m
1 stop
Alaska Airlines Logo
4:08 pm - 11:59 pm
HLN
-
STL
6h 51m
1 stop
$354Alaska Airlines
Sat, Dec 5 - Wed, Dec 9
Alaska Airlines Logo
7:00 am - 3:31 pm
STL
-
HLN
9h 31m
1 stop
Alaska Airlines Logo
4:08 pm - 11:59 pm
HLN
-
STL
6h 51m
1 stop
$364Alaska Airlines
Booking Insights

KAYAK's insights & trends for St. Louis to Montana flights

Get data-powered insights and trends into flights from St. Louis to Montana to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from St. Louis to Montana?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from St. Louis to Montana departing in October.

Flight prices are typical for this route right now.

Flights to Montana from St. Louis usually cost between $330 and $484 in October.
The lowest price found in the past 5 days was $342 on United Airlines (Oct 14-Oct 17).

What is the cheapest month to fly from St. Louis to Montana?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Montana, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Montana is January, when tickets cost $326 (return) on average. On the other hand, the most expensive months are July and August, when the average cost of round-trip tickets is $667 and $472 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from St. Louis to Montana, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from St. Louis to Montana, you should book around 2 weeks before departure, which saves you about 12% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Find deals

Good to know

Low season

February

Cheapest flight

$159
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly and prices are also 1% lower on average.
Flight from St. Louis to Bozeman

FAQs - booking Montana flights

  • How does KAYAK find such low prices on flights from St. Louis to Montana?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Montana.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Montana?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from St. Louis to Montana is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Montana?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from St. Louis to Montana with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Montana?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from St. Louis to Montana up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from St. Louis to Montana

Information on your arrival and departure airports

St. Louis (STL)