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Montana

$114+ 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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BZN
ago. 4 — ago. 111
lun. 8/4
lun. 8/11
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 julio 30, 2025.

Round-trip from

$248
(United Airlines)

One-way from

$114
(American Airlines)

Popular in

December

Cheapest in

November

Average price

$436
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. 0% potential increase in price ($1 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 July 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 julio 30, 2025.

This American Airlines deal was found by Cheapflights users on 7/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/306:10 amSTL - BZN
1 stop9h 02mAmerican Airlines
sáb. 10/43:06 pmBZN - STL
1 stop5h 51mAmerican Airlines
Deal found 7/30$243
This United Airlines deal was found by Cheapflights users on 7/29. 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.
sáb. 9/64:50 pmSTL - COD
1 stop6h 25mUnited Airlines
mar. 9/96:07 pmCOD - STL
1 stop4h 46mUnited Airlines
Deal found 7/29$248
This Southwest deal was found by Cheapflights users on 7/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/307:10 amSTL - BZN
1 stop5h 55mSouthwest
sáb. 10/46:45 amBZN - STL
2 stops9h 15mSouthwest
Deal found 7/30$256
This Delta deal was found by Cheapflights users on 7/28. 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.
mar. 10/288:53 amSTL - FCA
1 stop5h 54mDelta
jue. 11/62:42 pmFCA - STL
1 stop7h 20mDelta
Deal found 7/28$257
This American Airlines deal was found by Cheapflights users on 7/28. 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.
dom. 8/177:01 amSTL - FCA
1 stop8h 38mAmerican Airlines
mié. 8/203:49 pmFCA - STL
1 stop6h 25mAmerican Airlines
Deal found 7/28$273
This Hawaiian Airlines deal was found by Cheapflights users on 7/29. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/66:33 amSTL - BZN
1 stop8h 37mHawaiian Airlines
vie. 10/103:04 pmBZN - STL
1 stop7h 59mHawaiian Airlines
Deal found 7/29$275
This United Airlines deal was found by Cheapflights users on 7/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/274:43 pmSTL - FCA
1 stop6h 01mUnited Airlines
lun. 11/32:38 pmFCA - STL
1 stop6h 16mUnited Airlines
Deal found 7/28$282
This Alaska Airlines deal was found by Cheapflights users on 7/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/304:14 pmSTL - FCA
1 stop8h 43mAlaska Airlines
jue. 11/66:33 amFCA - STL
1 stop7h 45mAlaska Airlines
Deal found 7/28$290
This American Airlines deal was found by Cheapflights users on 7/28. 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.
mié. 9/39:56 amSTL - BIL
1 stop12h 01mAmerican Airlines
mié. 9/1012:19 pmBIL - STL
1 stop8h 34mAmerican Airlines
Deal found 7/28$290
This American Airlines deal was found by Cheapflights users on 7/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/96:10 amSTL - MSO
1 stop18h 08mAmerican Airlines
mar. 9/166:40 amMSO - STL
1 stop14h 13mAmerican Airlines
Deal found 7/30$300
This Delta deal was found by Cheapflights users on 7/27. 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.
lun. 12/86:59 pmSTL - BZN
2 stops17h 17mDelta
jue. 12/112:00 pmBZN - STL
1 stop8h 39mDelta
Deal found 7/27$306
This United Airlines deal was found by Cheapflights users on 7/29. 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.
sáb. 8/236:35 amSTL - BZN
2 stops9h 39mUnited Airlines
sáb. 8/302:41 pmBZN - STL
1 stop5h 15mUnited Airlines
Deal found 7/29$311

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 julio 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

mar. 9/30

6:10 am-2:12 pm

1 stop9h 02m

Bozeman Gallatin Field

sáb. 10/4

3:06 pm-9:57 pm

1 stop5h 51m

$243

St. LouisCody

STL - COD

STLCOD

Lambert-St Louis

sáb. 9/6

4:50 pm-10:15 pm

1 stop6h 25m

Cody E.E. Faust

mar. 9/9

6:07 pm-11:53 pm

1 stop4h 46m

$248

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

mar. 9/30

7:10 am-12:05 pm

1 stop5h 55m

Bozeman Gallatin Field

sáb. 10/4

6:45 am-5:00 pm

2 stops9h 15m

$256

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

mar. 10/28

8:53 am-1:47 pm

1 stop5h 54m

Kalispell Glacier Park

mié. 11/5

2:42 pm-11:02 pm

1 stop7h 20m

$257

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

dom. 8/17

7:01 am-2:39 pm

1 stop8h 38m

Kalispell Glacier Park

mié. 8/20

3:49 pm-11:14 pm

1 stop6h 25m

$273

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

lun. 10/6

6:33 am-2:10 pm

1 stop8h 37m

Bozeman Gallatin Field

vie. 10/10

3:04 pm-12:03 am

1 stop7h 59m

$275

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

lun. 10/27

4:43 pm-9:44 pm

1 stop6h 01m

Kalispell Glacier Park

lun. 11/3

2:38 pm-9:54 pm

1 stop6h 16m

$282

St. LouisKalispell

STL - FCA

STLFCA

Lambert-St Louis

jue. 10/30

4:14 pm-11:57 pm

1 stop8h 43m

Kalispell Glacier Park

jue. 11/6

6:33 am-3:18 pm

1 stop7h 45m

$290

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

mié. 9/3

9:56 am-8:57 pm

1 stop12h 01m

Billings Logan Intl

mié. 9/10

12:19 pm-9:53 pm

1 stop8h 34m

$290

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

mar. 9/9

6:10 am-11:18 pm

1 stop18h 08m

Missoula Johnson-Bell Field

mar. 9/16

6:40 am-9:53 pm

1 stop14h 13m

$300

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

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, 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 May is currently the most expensive (average of $478). 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 julio 30, 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.

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 julio 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
10,000 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,241 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,980 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Hawaiian Airlines
7.8
Good
2,611 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,896 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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 $114. Delta flights start at $129 while deals on Alaska Airlines start at $143 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 - Kalispell Glacier Park, Lambert-St Louis - Missoula Johnson-Bell Field and Lambert-St Louis - Bozeman Gallatin 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 May is currently the most expensive (average of $478). 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 julio 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$244Average$460FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$251Average$428FlexibilityNo cancel feeOn-time71%
DeltaCheapest$256Average$435FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$278Average$561FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$336Average$479FlexibilityNo cancel feeOn-time63%

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