Montana

$136+ 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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BZN
Jun 11 — Jun 181
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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 May 12, 2026.

This Delta deal was found by Cheapflights users on 5/11. 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 8/267:35 pm
STL
-
BZN
1 stop5h 29m
Delta
Sun 8/306:00 am
BZN
-
STL
1 stop6h 34m
Delta
Deal found 5/11$271
This Delta deal was found by Cheapflights users on 5/8. 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 7/27:55 pm
STL
-
BZN
1 stop5h 28m
Delta
Wed 7/85:15 am
BZN
-
STL
1 stop7h 18m
Delta
Deal found 5/8$281
This Delta deal was found by Cheapflights users on 5/12. 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 5/265:36 pm
STL
-
BZN
1 stop7h 08m
Delta
Wed 6/36:00 am
BZN
-
STL
1 stop7h 31m
Delta
Deal found 5/12$285
This United Airlines deal was found by Cheapflights users on 5/11. 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.
Tue 5/265:10 am
STL
-
BZN
1 stop5h 27m
United Airlines
Tue 6/210:33 am
BZN
-
STL
2 stops9h 57m
United Airlines
Deal found 5/11$290
This American Airlines deal was found by Cheapflights users on 5/11. 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 6/39:28 am
STL
-
FCA
1 stop7h 35m
American Airlines
Mon 6/84:48 pm
FCA
-
STL
1 stop6h 28m
American Airlines
Deal found 5/11$297
This United Airlines deal was found by Cheapflights users on 5/9. 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 6/295:10 am
STL
-
BZN
1 stop5h 27m
United Airlines
Fri 7/34:29 pm
BZN
-
STL
1 stop6h 28m
United Airlines
Deal found 5/9$300
This United Airlines deal was found by Cheapflights users on 5/9. 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 6/275:33 pm
STL
-
BZN
1 stop6h 10m
United Airlines
Wed 7/15:38 pm
BZN
-
STL
1 stop5h 19m
United Airlines
Deal found 5/9$301
This American Airlines deal was found by Cheapflights users on 5/8. 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 5/257:03 am
STL
-
FCA
1 stop8h 57m
American Airlines
Fri 5/291:25 pm
FCA
-
STL
1 stop6h 05m
American Airlines
Deal found 5/8$303
This Alaska Airlines deal was found by Cheapflights users on 5/9. 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.
Thu 10/13:17 pm
STL
-
BZN
1 stop8h 42m
Alaska Airlines
Tue 10/611:16 am
BZN
-
STL
1 stop11h 43m
Alaska Airlines
Deal found 5/9$305
This Delta deal was found by Cheapflights users on 5/10. 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 8/192:10 pm
STL
-
FCA
2 stops10h 41m
Delta
Tue 8/256:20 am
FCA
-
STL
1 stop7h 50m
Delta
Deal found 5/10$308
This American Airlines deal was found by Cheapflights users on 5/7. 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 5/227:03 am
STL
-
FCA
1 stop8h 57m
American Airlines
Tue 5/2612:25 pm
FCA
-
STL
1 stop8h 17m
American Airlines
Deal found 5/7$309
This United Airlines deal was found by Cheapflights users on 5/7. 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.
Sun 6/75:29 pm
STL
-
BZN
1 stop6h 14m
United Airlines
Thu 6/118:00 am
BZN
-
STL
1 stop6h 46m
United Airlines
Deal found 5/7$311

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 May 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$271
(Delta)

One-way from

$136
(Delta)

Popular in

March

Cheapest in

January

Average price

$396
Provider with most accurate pricing for Lambert-St Louis-Bozeman Gallatin Field flight deals.
Provider most trusted by Cheapflights users for Lambert-St Louis-Bozeman Gallatin Field flights.
From Lambert-St Louis to Montana
One-way flight from Lambert-St Louis to Montana
Highest demand for flights based on searches. 9% potential increase in price ($40 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
Average for round-trip flights in May 2026

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 May 12, 2026.
Use the filters below to find and compare flights from St. Louis to Montana that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Sat 7/4

8:00 am-3:15 pm

1 stop8h 15m

Bozeman Gallatin Field

Wed 7/8

5:15 am-1:33 pm

1 stop7h 18m

$271

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Mon 8/10

7:35 pm-12:04 am

1 stop5h 29m

Bozeman Gallatin Field

Sat 8/15

6:00 am-1:34 pm

1 stop6h 34m

$271

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Sun 6/7

5:29 pm-10:43 pm

1 stop6h 14m

Bozeman Gallatin Field

Thu 6/11

8:00 am-3:46 pm

1 stop6h 46m

$311

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Mon 5/25

6:00 am-11:29 am

1 stop6h 29m

Kalispell Glacier Park

Fri 6/12

12:35 pm-9:30 pm

1 stop7h 55m

$333

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Sat 11/7

3:24 pm-11:59 pm

1 stop9h 35m

Kalispell Glacier Park

Wed 11/11

2:10 pm-11:59 pm

1 stop8h 49m

$343

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Fri 6/5

5:36 pm-11:14 pm

1 stop6h 38m

Billings Logan Intl

Fri 6/12

6:40 pm-12:43 am

1 stop5h 03m

$349

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Fri 7/3

5:36 pm-11:00 pm

1 stop6h 24m

Billings Logan Intl

Tue 7/14

6:34 pm-12:41 am

1 stop5h 07m

$349
Quickest round-trip

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Tue 9/22

3:50 pm-7:37 pm

1 stop4h 47m

Billings Logan Intl

Mon 9/28

6:25 pm-12:36 am

1 stop5h 11m

$349

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

Mon 8/10

5:42 pm-11:52 pm

1 stop7h 10m

Missoula Johnson-Bell Field

Sat 8/15

7:13 am-1:34 pm

1 stop5h 21m

$349

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

Thu 9/24

6:59 pm-12:24 am

1 stop6h 25m

Missoula Johnson-Bell Field

Sun 9/27

5:45 am-11:30 am

1 stop4h 45m

$349

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/9

Showing 1-10 of 59 resultsSorted by cheapest first
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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

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

The price you pay for your flight from St. Louis to Montana may vary depending on when you book. For the best chance of a lower fare, look to book 67 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, June is the cheapest month in which you can book a flight from St. Louis to Montana (average of $142). Flying from St. Louis to Montana in December is currently the most expensive (average of $256). 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.

How much does it cost to fly round-trip from St. Louis to Montana?

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 May 12, 2026.
Peruse reviews from past customers who have flown with Southwest,Alaska Airlines, andDelta 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.

Food

7.0

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Food

7.0

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Food

7.0

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Food

7.0

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Food

7.0

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Food

7.0

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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 6h 14m. Delta provides one of the quickest options available for as low as $311. 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 $128. American Airlines flights start at $129 while deals on United Airlines start at $131 one-way.

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

  • 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, June is the cheapest month in which you can book a flight from St. Louis to Montana (average of $142). Flying from St. Louis to Montana in December is currently the most expensive (average of $256). 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

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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.

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 May 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$179Average$389FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$187Average$407FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$214Average$420FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$238Average$395FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$242Average$442FlexibilityNo cancel feeOn-time69%

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