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$139+ 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 12/11. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BZN
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Cheap flight deals from St. Louis to Montana

Keep the following information in mind while searching for St. Louis to Montana flight deals. Data was last updated October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$209
(Southwest)

One-way from

$139
(Delta)

Popular in

December

Cheapest in

August

Average price

$416
Provider with most accurate pricing for Lambert-St Louis-Bozeman Gallatin Field flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Bozeman Gallatin Field flights.
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From Lambert-St Louis to Montana
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One-way flight from Lambert-St Louis to Montana
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Highest demand for flights based on searches. 5% potential increase in price ($23 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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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 October 30, 2025.

This Southwest deal was found by Cheapflights users on 10/29. 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.
Sat 12/65:30 amSTL - BZN
1 stop5h 05mSouthwest
Wed 12/105:30 amBZN - STL
1 stop6h 50mSouthwest
Deal found 10/29$211
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Sat 12/68:00 amSTL - BZN
2 stops8h 31mUnited Airlines
Wed 12/102:42 pmBZN - STL
1 stop5h 15mUnited Airlines
Deal found 10/29$216
This Southwest deal was found by Cheapflights users on 10/29. 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 11/124:35 pmSTL - BZN
1 stop7h 10mSouthwest
Sun 11/233:25 pmBZN - STL
1 stop7h 10mSouthwest
Deal found 10/29$235
This Delta deal was found by Cheapflights users on 10/30. 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.
Fri 12/56:30 amSTL - FCA
1 stop6h 01mDelta
Wed 12/105:00 amFCA - STL
1 stop7h 30mDelta
Deal found 10/30$257
This Delta deal was found by Cheapflights users on 10/29. 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.
Mon 11/246:34 amSTL - BZN
1 stop5h 11mDelta
Fri 11/286:04 amBZN - STL
1 stop4h 55mDelta
Deal found 10/29$257
This American Airlines deal was found by Cheapflights users on 10/29. 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.
Thu 11/135:17 amSTL - BZN
1 stop8h 44mAmerican Airlines
Mon 11/171:52 pmBZN - STL
1 stop8h 06mAmerican Airlines
Deal found 10/29$259
This American Airlines deal was found by Cheapflights users on 10/28. 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 12/225:16 pmSTL - BZN
1 stop18h 53mAmerican Airlines
Mon 12/292:29 pmBZN - STL
1 stop8h 22mAmerican Airlines
Deal found 10/28$284
This Delta deal was found by Cheapflights users on 10/29. 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.
Thu 11/136:34 amSTL - FCA
1 stop5h 52mDelta
Mon 11/176:06 pmFCA - STL
1 stop5h 40mDelta
Deal found 10/29$289
This Delta deal was found by Cheapflights users on 10/28. 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 11/126:00 amSTL - BZN
1 stop8h 11mDelta
Sun 11/166:34 pmBZN - STL
1 stop5h 12mDelta
Deal found 10/28$293
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/127:45 pmSTL - FCA
2 stops22h 09mMultiple Airlines
Sun 11/165:44 pmFCA - STL
1 stop19h 13mMultiple Airlines
Deal found 10/30$296
This Southwest deal was found by Cheapflights users on 10/28. 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.
Tue 11/45:35 amSTL - BZN
1 stop5h 20mSouthwest
Tue 11/115:30 amBZN - STL
1 stop6h 50mSouthwest
Deal found 10/28$304
This Southwest deal was found by Cheapflights users on 10/29. 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.
Sat 12/132:00 pmSTL - BZN
2 stops7h 35mSouthwest
Thu 12/185:00 amBZN - STL
1 stop6h 10mSouthwest
Deal found 10/29$314

Cheapflights Fare Finder

 
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 October 30, 2025.
Use the filters below to find and compare flights from St. Louis to Montana that are best for you.

Fly from

St. Louis

Fly to

Montana

Route

Depart

Return

Price

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Wed 1/7

6:20 am-10:30 am

1 stop5h 10m

Bozeman Gallatin Field

Sun 1/11

3:30 pm-11:35 pm

1 stop7h 05m

$209

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Sun 1/25

5:00 am-12:05 pm

1 stop8h 05m

Bozeman Gallatin Field

Mon 2/2

3:50 pm-9:45 pm

1 stop4h 55m

$211

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Sat 12/13

5:30 am-9:35 am

1 stop5h 05m

Bozeman Gallatin Field

Thu 12/18

5:00 am-12:10 pm

1 stop6h 10m

$211

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Sat 12/6

8:00 am-3:31 pm

2 stops8h 31m

Bozeman Gallatin Field

Wed 12/10

2:42 pm-8:57 pm

1 stop5h 15m

$216

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Fri 12/5

6:30 am-11:31 am

1 stop6h 01m

Kalispell Glacier Park

Wed 12/10

5:00 am-1:30 pm

1 stop7h 30m

$257

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Mon 11/24

6:34 am-10:45 am

1 stop5h 11m

Bozeman Gallatin Field

Fri 11/28

6:04 am-11:59 am

1 stop4h 55m

$257

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Thu 11/20

5:35 am-9:55 am

1 stop5h 20m

Bozeman Gallatin Field

Tue 11/25

3:40 pm-11:05 pm

1 stop6h 25m

$260

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Sat 12/6

6:30 am-11:31 am

1 stop6h 01m

Kalispell Glacier Park

Wed 12/10

5:00 am-5:10 pm

2 stops11h 10m

$262

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Mon 12/22

5:16 pm-11:09 am

1 stop18h 53m

Bozeman Gallatin Field

Mon 12/29

2:29 pm-11:51 pm

1 stop8h 22m

$284

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Sun 1/25

6:30 am-11:44 am

1 stop6h 14m

Bozeman Gallatin Field

Sun 2/1

2:25 pm-10:00 pm

1 stop6h 35m

$287

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 46 results
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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.

Cheapflights Insights

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

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

Currently, September is the cheapest month in which you can book a flight from St. Louis to Montana (average of $207). Flying from St. Louis to Montana in April is currently the most expensive (average of $311). 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 October 30, 2025.

One of the essential ways to save on airfare from St. Louis to Montana is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 28% on airfare.

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 October 30, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Delta from St. Louis to Montana to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,217 reviews

Comfort

7.8

Food

7.1

Entertainment

7.0

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Alaska Airlines
8.0
Very good
11,217 reviews
Alaska Airlines
8.0
Very good
11,217 reviews

Comfort

7.8

Food

7.1

Entertainment

7.0

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Southwest
8.0
Very good
4,243 reviews
Alaska Airlines
8.0
Very good
11,217 reviews

Comfort

7.8

Food

7.1

Entertainment

7.0

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Delta
7.9
Good
7,998 reviews
Alaska Airlines
8.0
Very good
11,217 reviews

Comfort

7.8

Food

7.1

Entertainment

7.0

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
United Airlines
7.4
Good
8,998 reviews
Alaska Airlines
8.0
Very good
11,217 reviews

Comfort

7.8

Food

7.1

Entertainment

7.0

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
American Airlines
7.2
Good
11,035 reviews
Alaska Airlines
8.0
Very good
11,217 reviews

Comfort

7.8

Food

7.1

Entertainment

7.0

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

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.

  • How long is the flight from St. Louis to Montana?

    A quick flight from St. Louis to Montana can take about 5h 10m. Southwest provides one of the quickest options available for as low as $209. The distance between St. Louis and Montana is about 1163 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $139. United Airlines flights start at $175 while deals on Alaska Airlines start at $298 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 - Billings Logan Intl.

  • 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, September is the cheapest month in which you can book a flight from St. Louis to Montana (average of $207). Flying from St. Louis to Montana in April is currently the most expensive (average of $311). 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

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Alternative routes for St. Louis to Montana

See prices for flight routes from nearby airports that may be better suited for you.
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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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$251Average$438FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$257Average$426FlexibilityNo cancel feeOn-time75%
DeltaCheapest$268Average$420FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$275Average$553FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$336Average$476FlexibilityNo cancel feeOn-time63%

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