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$144+ 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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BZN
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
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 March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$287
(Delta)

One-way from

$144
(American Airlines)

Popular in

December

Cheapest in

November

Average price

$431
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. 1% potential increase in price ($4 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 28, 2025.

This Delta deal was found by Cheapflights users on 3/27. 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.
Sun 8/177:20 amSTL - BZN
1 stop6h 47mDelta
Fri 8/225:45 amBZN - STL
1 stop6h 39mDelta
Deal found 3/27$287
This Delta deal was found by Cheapflights users on 3/27. 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 8/78:55 amSTL - MSO
1 stop5h 53mDelta
Fri 8/156:10 pmMSO - STL
1 stop5h 28mDelta
Deal found 3/27$289
This Delta deal was found by Cheapflights users on 3/27. 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.
Sat 4/265:00 pmSTL - FCA
1 stop7h 21mDelta
Tue 5/612:32 pmFCA - STL
1 stop7h 31mDelta
Deal found 3/27$305
This American Airlines deal was found by Cheapflights users on 3/27. 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.
Tue 6/107:20 amSTL - BIL
1 stop5h 41mAmerican Airlines
Tue 6/172:00 pmBIL - STL
1 stop5h 59mAmerican Airlines
Deal found 3/27$313
This Delta deal was found by Cheapflights users on 3/27. 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 6/102:15 pmSTL - BIL
2 stops9h 48mDelta
Tue 6/176:27 pmBIL - STL
1 stop5h 09mDelta
Deal found 3/27$332
This Southwest deal was found by Cheapflights users on 3/27. 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 10/155:55 amSTL - BZN
1 stop6h 15mSouthwest
Tue 10/215:30 amBZN - STL
2 stops8h 15mSouthwest
Deal found 3/27$342
This Alaska Airlines deal was found by Cheapflights users on 3/27. 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 9/117:36 pmSTL - BZN
1 stop16h 05mAlaska Airlines
Mon 9/153:08 pmBZN - STL
1 stop7h 51mAlaska Airlines
Deal found 3/27$359
This American Airlines deal was found by Cheapflights users on 3/27. 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 6/115:32 amSTL - BZN
1 stop6h 07mAmerican Airlines
Mon 6/232:57 pmBZN - STL
1 stop7h 57mAmerican Airlines
Deal found 3/27$362
This United Airlines deal was found by Cheapflights users on 3/27. 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 4/196:30 amSTL - BZN
1 stop6h 07mUnited Airlines
Fri 4/252:10 pmBZN - STL
1 stop6h 40mUnited Airlines
Deal found 3/27$367
This American Airlines deal was found by Cheapflights users on 3/28. 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.
Thu 7/316:00 amSTL - MSO
1 stop7h 20mAmerican Airlines
Tue 8/512:54 pmMSO - STL
1 stop6h 29mAmerican Airlines
Deal found 3/28$374
This Hawaiian Airlines deal was found by Cheapflights users on 3/27. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/113:17 pmSTL - MSO
1 stop9h 42mHawaiian Airlines
Mon 9/154:02 pmMSO - STL
1 stop6h 57mHawaiian Airlines
Deal found 3/27$379
This Alaska Airlines deal was found by Cheapflights users on 3/27. 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.
Fri 9/53:17 pmSTL - FCA
1 stop9h 42mAlaska Airlines
Sat 9/136:35 pmFCA - STL
1 stop18h 42mAlaska Airlines
Deal found 3/27$391

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 March 28, 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

Sun 8/17

7:20 am-1:07 pm

1 stop6h 47m

Bozeman Gallatin Field

Fri 8/22

5:45 am-1:24 pm

1 stop6h 39m

$287

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

Thu 8/7

8:55 am-1:48 pm

1 stop5h 53m

Missoula Johnson-Bell Field

Fri 8/15

6:10 pm-12:38 am

1 stop5h 28m

$289

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

Sat 4/26

5:00 pm-11:21 pm

1 stop7h 21m

Kalispell Glacier Park

Tue 5/6

12:32 pm-9:03 pm

1 stop7h 31m

$305

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Tue 6/10

7:20 am-12:01 pm

1 stop5h 41m

Billings Logan Intl

Tue 6/17

2:00 pm-8:59 pm

1 stop5h 59m

$313

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Tue 6/10

2:15 pm-11:03 pm

2 stops9h 48m

Billings Logan Intl

Tue 6/17

6:27 pm-12:36 am

1 stop5h 09m

$332

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Thu 9/11

7:36 pm-10:41 am

1 stop16h 05m

Bozeman Gallatin Field

Mon 9/15

3:08 pm-11:59 pm

1 stop7h 51m

$359

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Wed 6/11

5:32 am-10:39 am

1 stop6h 07m

Bozeman Gallatin Field

Mon 6/23

2:57 pm-11:54 pm

1 stop7h 57m

$362

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Sat 4/19

6:30 am-11:37 am

1 stop6h 07m

Bozeman Gallatin Field

Fri 4/25

2:10 pm-9:50 pm

1 stop6h 40m

$367

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

Thu 7/31

6:00 am-12:20 pm

1 stop7h 20m

Missoula Johnson-Bell Field

Tue 8/5

12:54 pm-8:23 pm

1 stop6h 29m

$374

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

Thu 9/11

3:17 pm-11:59 pm

1 stop9h 42m

Missoula Johnson-Bell Field

Mon 9/15

4:02 pm-11:59 pm

1 stop6h 57m

$379

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 36 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, 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 March 28, 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 March 28, 2025.
See what other customers who have flown with Southwest, Alaska Airlines and Delta 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
4,273 reviews

Overall

8.1

Food

7.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.1
Very good
4,273 reviews
Southwest
8.1
Very good
4,273 reviews

Overall

8.1

Food

7.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Alaska Airlines
8.0
Very good
9,798 reviews
Southwest
8.1
Very good
4,273 reviews

Overall

8.1

Food

7.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,896 reviews
Southwest
8.1
Very good
4,273 reviews

Overall

8.1

Food

7.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Hawaiian Airlines
7.9
Good
2,335 reviews
Southwest
8.1
Very good
4,273 reviews

Overall

8.1

Food

7.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,603 reviews
Southwest
8.1
Very good
4,273 reviews

Overall

8.1

Food

7.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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 American Airlines, which is currently one of the cheapest options available, starting at $144. Delta flights start at $158 while deals on Southwest start at $189 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

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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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$223Average$463FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$233Average$469FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$268Average$504FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$278Average$552FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$366Average$526FlexibilityNo cancel feeOn-time63%
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