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$105+ 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 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BZN
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap 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 December 18, 2025.

This United Airlines deal was found by Cheapflights users on 12/17. 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.
Thu 12/259:00 amSTL - BZN
1 stop7h 27mUnited Airlines
Sat 12/277:15 amBZN - STL
1 stop8h 12mUnited Airlines
Deal found 12/17$319
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Wed 12/249:55 amSTL - BZN
2 stops12h 13mUnited Airlines
Mon 12/294:14 pmBZN - STL
1 stop5h 29mUnited Airlines
Deal found 12/17$324
This Delta deal was found by Cheapflights users on 12/17. 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 12/256:05 amSTL - BZN
1 stop8h 10mDelta
Sun 12/282:20 pmBZN - STL
1 stop6h 56mDelta
Deal found 12/17$369
This Southwest deal was found by Cheapflights users on 12/17. 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.
Thu 12/255:00 amSTL - BZN
1 stop7h 55mSouthwest
Sun 12/2810:15 amBZN - STL
2 stops7h 55mSouthwest
Deal found 12/17$400
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Thu 12/256:41 amSTL - BZN
1 stop9h 43mUnited Airlines
Mon 12/296:15 amBZN - STL
2 stops9h 12mUnited Airlines
Deal found 12/17$407
This Southwest deal was found by Cheapflights users on 12/17. 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.
Thu 12/255:00 amSTL - BZN
1 stop7h 55mSouthwest
Mon 12/2910:15 amBZN - STL
2 stops7h 55mSouthwest
Deal found 12/17$415
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Thu 12/182:45 pmSTL - FCA
1 stop8h 14mUnited Airlines
Thu 12/252:38 pmFCA - STL
1 stop6h 44mUnited Airlines
Deal found 12/17$419
This Delta deal was found by Cheapflights users on 12/17. 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 12/182:38 pmSTL - FCA
2 stops9h 32mDelta
Thu 12/255:20 amFCA - STL
1 stop7h 03mDelta
Deal found 12/17$424
This American Airlines deal was found by Cheapflights users on 12/16. 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.
Fri 12/195:54 amSTL - BZN
1 stop6h 15mAmerican Airlines
Sun 12/2111:39 amBZN - STL
1 stop6h 52mAmerican Airlines
Deal found 12/16$429
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Wed 12/313:10 pmSTL - BZN
1 stop8h 19mUnited Airlines
Mon 1/54:25 pmBZN - STL
1 stop4h 57mUnited Airlines
Deal found 12/17$485
This Southwest deal was found by Cheapflights users on 12/17. 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 12/241:50 pmSTL - BZN
2 stops9h 55mSouthwest
Sun 12/2810:15 amBZN - STL
2 stops7h 55mSouthwest
Deal found 12/17$505
This American Airlines deal was found by Cheapflights users on 12/16. 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.
Wed 12/314:53 pmSTL - BZN
1 stop20h 51mAmerican Airlines
Mon 1/52:29 pmBZN - STL
1 stop8h 22mAmerican Airlines
Deal found 12/16$511

Find 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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$210
(Alaska Airlines)

One-way from

$105
(Alaska Airlines)

Popular in

March

Cheapest in

August

Average price

$453
Provider with most accurate pricing for Lambert-St Louis-Bozeman Gallatin Field flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Bozeman Gallatin Field flights.
Search Deals
From Lambert-St Louis to Montana
Search Deals
One-way flight from Lambert-St Louis to Montana
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($59 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 18, 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 1/14

6:20 am-10:30 am

1 stop5h 10m

Bozeman Gallatin Field

Wed 1/21

7:40 am-1:55 pm

1 stop5h 15m

$211

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Mon 1/12

6:00 am-1:19 pm

1 stop8h 19m

Bozeman Gallatin Field

Wed 1/14

2:13 pm-10:55 pm

1 stop7h 42m

$211

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Thu 2/12

2:47 pm-11:56 pm

1 stop10h 09m

Bozeman Gallatin Field

Mon 2/16

7:00 am-11:59 pm

1 stop15h 59m

$245

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Sat 1/17

4:15 pm-9:59 pm

1 stop6h 44m

Kalispell Glacier Park

Wed 1/21

2:42 pm-8:58 pm

1 stop5h 16m

$252

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Wed 1/28

2:45 pm-9:33 pm

1 stop7h 48m

Bozeman Gallatin Field

Sat 1/31

10:50 am-9:13 pm

2 stops9h 23m

$256

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Sun 1/18

6:00 am-1:29 pm

1 stop8h 29m

Bozeman Gallatin Field

Fri 1/23

2:39 pm-11:37 pm

1 stop7h 58m

$257

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Sun 1/18

5:00 pm-11:17 pm

1 stop7h 17m

Bozeman Gallatin Field

Tue 1/27

5:15 am-1:48 pm

1 stop7h 33m

$257

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Wed 1/21

3:31 pm-8:06 pm

1 stop5h 35m

Bozeman Gallatin Field

Sat 1/24

2:50 pm-11:36 pm

1 stop7h 46m

$257

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Tue 1/20

6:10 am-12:55 pm

1 stop7h 45m

Bozeman Gallatin Field

Sat 1/24

5:15 am-1:48 pm

1 stop7h 33m

$257

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Sat 1/17

5:00 pm-11:17 pm

1 stop7h 17m

Bozeman Gallatin Field

Wed 1/21

7:23 am-9:38 pm

2 stops13h 15m

$265

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 48 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 $205). Flying from St. Louis to Montana in March is currently the most expensive (average of $304). 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 December 18, 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 December 18, 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
11,477 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Food

7.1

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Alaska Airlines
8.0
Very good
11,477 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Food

7.1

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Southwest
7.9
Good
4,250 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Food

7.1

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Delta
7.9
Good
8,005 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Food

7.1

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
United Airlines
7.4
Good
9,091 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Food

7.1

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
American Airlines
7.2
Good
11,054 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Food

7.1

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.

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 $211. 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 Southwest, which is currently one of the cheapest options available, starting at $104. Delta flights start at $128 while deals on American Airlines start at $133 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 $205). Flying from St. Louis to Montana in March is currently the most expensive (average of $304). 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$251Average$424FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$257Average$396FlexibilityNo cancel feeOn-time75%
DeltaCheapest$266Average$413FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$275Average$527FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$336Average$476FlexibilityNo cancel feeOn-time63%

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