HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Montana

$162+ Cheap flights from St. Louis (STL) to Montana

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BZN
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to Montana with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from St. Louis to Montana

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Montana (USMT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2025.

Round-trip from

$312
(United Airlines)

One-way from

$162
(Alaska Airlines)
From Lambert-St Louis to Montana
Search Deals
One-way flight from Lambert-St Louis to Montana
Search Deals

Find flight deals from St. Louis to Montana

Cheapest flights from St. Louis to Montana
Explore the most affordable flight options available from St. Louis to Montana. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2025.

This United Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/34:36 pmSTL - FCA
1 stop6h 17mUnited Airlines
Tue 6/32:29 pmFCA - STL
1 stop5h 38mUnited Airlines
Deal found 1/20$312
This Delta deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/195:00 pmSTL - BIL
1 stop8h 31mDelta
Wed 2/265:20 amBIL - STL
1 stop7h 23mDelta
Deal found 1/20$325
This Alaska Airlines deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/237:00 amSTL - BZN
1 stop7h 58mAlaska Airlines
Sat 3/12:53 pmBZN - STL
1 stop22h 32mAlaska Airlines
Deal found 1/19$344
This Delta deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/185:30 pmSTL - BZN
1 stop7h 09mDelta
Tue 2/253:21 pmBZN - STL
1 stop7h 15mDelta
Deal found 1/19$347
This American Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/237:42 amSTL - BZN
1 stop7h 17mAmerican Airlines
Sat 8/301:45 pmBZN - STL
1 stop5h 02mAmerican Airlines
Deal found 1/20$367
This Southwest deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/511:00 amSTL - BZN
2 stops8h 45mSouthwest
Mon 3/105:35 pmBZN - STL
1 stop6h 25mSouthwest
Deal found 1/20$382
This Alaska Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/146:44 amSTL - FCA
1 stop9h 20mAlaska Airlines
Fri 4/183:44 pmFCA - STL
1 stop7h 15mAlaska Airlines
Deal found 1/20$388
This Alaska Airlines deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/96:44 amSTL - MSO
1 stop7h 55mAlaska Airlines
Mon 4/142:35 pmMSO - STL
1 stop22h 40mAlaska Airlines
Deal found 1/19$394
This American Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/45:39 amSTL - FCA
1 stop6h 09mAmerican Airlines
Tue 8/1211:27 amFCA - STL
1 stop5h 54mAmerican Airlines
Deal found 1/20$409
This United deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/128:27 amSTL - BIL
1 stop5h 56mUnited Airlines
Sat 2/1510:55 amBIL - STL
1 stop4h 38mUnited Airlines
Deal found 1/20$410
This Delta deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/95:00 pmSTL - MSO
1 stop8h 27mDelta
Mon 4/145:40 amMSO - STL
1 stop6h 41mDelta
Deal found 1/19$421
This United Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/174:30 pmSTL - BZN
1 stop5h 40mUnited Airlines
Fri 3/218:23 amBZN - STL
1 stop5h 10mUnited Airlines
Deal found 1/20$426

Find flights from St. Louis to Montana within your budget

Customize your flight search to find flights from St. Louis to Montana 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, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Mon 2/3

4:36 pm-9:53 pm

1 stop6h 17m

Kalispell Glacier Park

Tue 6/3

2:29 pm-9:07 pm

1 stop5h 38m

$312

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Wed 2/19

5:00 pm-12:31 am

1 stop8h 31m

Billings Logan Intl

Wed 2/26

5:20 am-1:43 pm

1 stop7h 23m

$325

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Sun 2/23

7:00 am-1:58 pm

1 stop7h 58m

Bozeman Gallatin Field

Sat 3/1

2:53 pm-2:25 pm

1 stop22h 32m

$344

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Tue 2/18

5:30 pm-11:39 pm

1 stop7h 09m

Bozeman Gallatin Field

Tue 2/25

3:21 pm-11:36 pm

1 stop7h 15m

$347

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Wed 3/5

11:00 am-6:45 pm

2 stops8h 45m

Bozeman Gallatin Field

Mon 3/10

5:35 pm-1:00 am

1 stop6h 25m

$382

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Mon 4/14

6:44 am-3:04 pm

1 stop9h 20m

Kalispell Glacier Park

Fri 4/18

3:44 pm-11:59 pm

1 stop7h 15m

$388

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

Wed 4/9

6:44 am-1:39 pm

1 stop7h 55m

Missoula Johnson-Bell Field

Mon 4/14

2:35 pm-2:15 pm

1 stop22h 40m

$394

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Wed 2/12

8:27 am-1:23 pm

1 stop5h 56m

Billings Logan Intl

Sat 2/15

10:55 am-4:33 pm

1 stop4h 38m

$410

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

Wed 4/9

5:00 pm-12:27 am

1 stop8h 27m

Missoula Johnson-Bell Field

Mon 4/14

5:40 am-1:21 pm

1 stop6h 41m

$421

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Mon 3/17

4:30 pm-9:10 pm

1 stop5h 40m

Bozeman Gallatin Field

Fri 3/21

8:23 am-2:33 pm

1 stop5h 10m

$426

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 35 results
1
2
3
4

Best time to book a flight from St. Louis to Montana

Have a flexible travel schedule? Discover the best time to fly to Montana from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from St. Louis to Montana

Get recent, data-driven insights about flights from St. Louis to Montana including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from St. Louis to Montana?

Currently, October is the cheapest month in which you can book a flight from St. Louis to Montana (average of $371). Flying from St. Louis to Montana in June is currently the most expensive (average of $520). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to MT?

Find hourly flight availability from St. Louis to Montana. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 21, 2025.

When flying from St. Louis to Montana, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Montana by month

Plan your trip to Montana by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Montana ranges from 0.4 - 2.0 inches per month. May is typically the wettest month, when rainfall can reach 2.0 in. January is typically the driest time to visit Montana when rainfall is around 0.4 in.

Temperature in Montana by month

Plan your trip to Montana by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Montana, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 64.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 15.8 F).

Reviews of airlines servicing Montana

Get insights into the airlines that provide service to Montana. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Montana. Reviews last updated January 21, 2025.
See what other customers who have flown with Delta, United Airlines and Alaska Airlines from St. Louis to Montana have to say. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,659 reviews

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.2

Comfort

8.1

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,659 reviews
Southwest
8.1
Very good
4,659 reviews

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.2

Comfort

8.1

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,696 reviews
Southwest
8.1
Very good
4,659 reviews

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.2

Comfort

8.1

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,521 reviews
Southwest
8.1
Very good
4,659 reviews

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.2

Comfort

8.1

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,982 reviews
Southwest
8.1
Very good
4,659 reviews

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.2

Comfort

8.1

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,659 reviews

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.2

Comfort

8.1

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Montana. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to Montana?

    Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to Montana. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

  • What are the cheapest airlines to fly from St. Louis to Montana one-way?

    To fly one-way, consider booking your trip with Alaska Airlines, which is currently one of the cheapest options available, starting at $162. Delta flights start at $184 while deals on United Airlines start at $229 one-way.

  • What are the most popular routes from St. Louis to Montana?

    The most popular flight routes from St. Louis to Montana are Lambert-St Louis - Bozeman Gallatin Field, Lambert-St Louis - Kalispell Glacier Park and Lambert-St Louis - Missoula Johnson-Bell Field.

  • Can I find deals for flights from St. Louis to Montana that include hotel bookings?

    Yes. In addition to deals on St. Louis to Montana flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Montana?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Montana.

  • Can I find deals for business class flights from St. Louis to Montana?

    Yes. Cheapflights offers flight deals from St. Louis to Montana by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Montana?

    Currently, October is the cheapest month in which you can book a flight from St. Louis to Montana (average of $371). Flying from St. Louis to Montana in June is currently the most expensive (average of $520). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Montana

See prices for flight routes from nearby airports that may be better suited for you.
St. Louis to Las Vegas flights
Kansas City to Las Vegas flights
St. Louis to Orlando flights
Kansas City to Seattle flights
St. Louis to Seattle flights
St. Louis to Miami flights
Kansas City to Hobby flights
Kansas City to Sky Harbor Intl flights
St. Louis to Sky Harbor Intl flights
St. Louis to Denver flights
Kansas City to Orlando flights
St. Louis to LaGuardia flights
Kansas City to Denver flights
Kansas City to LaGuardia flights
St. Louis to Newark flights
Kansas City to Miami flights
St. Louis to Dallas/Fort Worth flights
Kansas City to O'Hare Intl flights
St. Louis to Hobby flights
Kansas City to George Bush Intcntl flights
St. Louis to John F Kennedy Intl flights
Kansas City to Los Angeles flights
Kansas City to Boston flights
St. Louis to Dulles Intl flights
Kansas City to Newark flights
Kansas City to Dallas/Fort Worth flights
St. Louis to Los Angeles flights
St. Louis to Fort Myers flights
St. Louis to Honolulu flights
St. Louis to George Bush Intcntl flights
Kansas City to John F Kennedy Intl flights
St. Louis to San Francisco flights
Kansas City to San Francisco flights
St. Louis to Atlanta flights
St. Louis to New Orleans flights
Kansas City to Dulles Intl flights
Kansas City to Atlanta flights
St. Louis to Boston flights
St. Louis to O'Hare Intl flights
St. Louis to Tampa flights
Kansas City to Tampa flights
St. Louis to Baltimore flights
St. Louis to San Diego flights
St. Louis to Reagan-National flights
St. Louis to Salt Lake City flights
Kansas City to Reagan-National flights
St. Louis to Philadelphia flights
Kansas City to Fort Lauderdale flights
St. Louis to Fort Lauderdale flights
St. Louis to Nashville flights

Top 5 airlines flying from St. Louis to Montana

Discover the top 5 airlines that operate flights from St. Louis to Montana. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$233Average$466FlexibilityNo cancel feeOn-time75%
DeltaCheapest$236Average$501FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$268Average$511FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$278Average$592FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$381Average$497FlexibilityNo cancel feeOn-time63%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.