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$153+ Cheap flights from Montana to St. Louis (STL)

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 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — STL
Feb 4 — Feb 111
Tue 2/4
Tue 2/11
1 adult, Economy
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Cheap flight deals from Montana to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Montana (USMT) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$319
(Alaska Airlines)

One-way from

$153
(Delta)

Popular in

August

Cheapest in

May

Average price

$407
Provider with most accurate pricing for Bozeman Gallatin Field-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for Bozeman Gallatin Field-Lambert-St Louis flights.
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From Montana to Lambert-St Louis
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One-way flight from Montana to Lambert-St Louis
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Highest demand for flights based on searches. 14% potential increase in price ($75 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in January 2025
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Find flight deals from Montana to St. Louis

Cheapest flights from Montana to St. Louis
Explore the most affordable flight options available from Montana to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 30, 2025.

This Alaska Airlines deal was found by Cheapflights users on 1/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/32:53 pmBZN - STL
1 stop8h 06mAlaska Airlines
Mon 4/76:44 amSTL - BZN
1 stop8h 15mAlaska Airlines
Deal found 1/29$319
This Delta deal was found by Cheapflights users on 1/29. 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.
Fri 3/76:45 pmBZN - STL
1 stop4h 53mDelta
Mon 3/175:35 pmSTL - BZN
1 stop6h 57mDelta
Deal found 1/29$344
This American Airlines deal was found by Cheapflights users on 1/29. 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.
Wed 11/51:47 pmBZN - STL
1 stop7h 42mAmerican Airlines
Mon 11/105:26 amSTL - BZN
1 stop8h 08mAmerican Airlines
Deal found 1/29$367
This United Airlines deal was found by Cheapflights users on 1/29. 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.
Wed 11/510:41 amBZN - STL
2 stops10h 25mUnited Airlines
Mon 11/104:30 pmSTL - BZN
1 stop5h 37mUnited Airlines
Deal found 1/29$372
This Southwest deal was found by Cheapflights users on 1/28. 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.
Thu 4/102:10 pmBZN - STL
1 stop6h 10mSouthwest
Wed 4/165:45 amSTL - BZN
2 stops8h 50mSouthwest
Deal found 1/28$378
This United Airlines deal was found by Cheapflights users on 1/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/1410:00 amBTM - STL
1 stop5h 33mUnited Airlines
Tue 2/184:39 pmSTL - BTM
1 stop6h 45mUnited Airlines
Deal found 1/30$451
This Alaska Airlines deal was found by Cheapflights users on 1/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/82:18 pmBIL - STL
2 stops32h 41mAlaska Airlines
Tue 4/153:11 pmSTL - BIL
1 stop9h 08mAlaska Airlines
Deal found 1/30$464
This American Airlines deal was found by Cheapflights users on 1/30. 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.
Wed 4/161:32 pmMSO - STL
1 stop18h 29mAmerican Airlines
Mon 4/215:27 pmSTL - MSO
1 stop20h 32mAmerican Airlines
Deal found 1/30$497
This Delta deal was found by Cheapflights users on 1/30. 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.
Wed 2/265:20 amBIL - STL
1 stop7h 23mDelta
Sun 3/26:59 pmSTL - BIL
1 stop6h 32mDelta
Deal found 1/30$517
This Delta deal was found by Cheapflights users on 1/29. 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.
Wed 4/168:00 amMSO - STL
1 stop7h 45mDelta
Mon 4/214:00 pmSTL - MSO
2 stops9h 25mDelta
Deal found 1/29$522
This Alaska Airlines deal was found by Cheapflights users on 1/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/244:19 pmHLN - STL
1 stop6h 40mAlaska Airlines
Thu 3/276:44 amSTL - HLN
1 stop9h 55mAlaska Airlines
Deal found 1/29$530
This Alaska Airlines deal was found by Cheapflights users on 1/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/162:35 pmMSO - STL
1 stop8h 24mAlaska Airlines
Mon 4/216:44 amSTL - MSO
2 stops31h 07mAlaska Airlines
Deal found 1/30$541

Find flights from Montana to St. Louis within your budget

Customize your flight search to find flights from Montana to St. Louis 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 January 30, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BozemanSt. Louis

BZN - STL

BZNSTL

Bozeman Gallatin Field

Thu 4/3

2:53 pm-11:59 pm

1 stop8h 06m

Lambert-St Louis

Mon 4/7

6:44 am-1:59 pm

1 stop8h 15m

$319

BozemanSt. Louis

BZN - STL

BZNSTL

Bozeman Gallatin Field

Fri 3/7

6:45 pm-12:38 am

1 stop4h 53m

Lambert-St Louis

Mon 3/17

5:35 pm-11:32 pm

1 stop6h 57m

$344

BozemanSt. Louis

BZN - STL

BZNSTL

Bozeman Gallatin Field

Thu 4/10

2:10 pm-9:20 pm

1 stop6h 10m

Lambert-St Louis

Wed 4/16

5:45 am-1:35 pm

2 stops8h 50m

$378

ButteSt. Louis

BTM - STL

BTMSTL

Butte Silver Bow Co

Fri 2/14

10:00 am-4:33 pm

1 stop5h 33m

Lambert-St Louis

Tue 2/18

4:39 pm-10:24 pm

1 stop6h 45m

$451

BozemanSt. Louis

BZN - STL

BZNSTL

Bozeman Gallatin Field

Tue 6/3

7:30 am-3:44 pm

1 stop7h 14m

Lambert-St Louis

Sat 6/14

9:50 am-9:07 pm

2 stops12h 17m

$452

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Tue 4/8

2:18 pm-11:59 pm

2 stops32h 41m

Lambert-St Louis

Tue 4/15

3:11 pm-11:19 pm

1 stop9h 08m

$464

MissoulaSt. Louis

MSO - STL

MSOSTL

Missoula Johnson-Bell Field

Wed 4/16

1:32 pm-9:01 am

1 stop18h 29m

Lambert-St Louis

Mon 4/21

5:27 pm-12:59 pm

1 stop20h 32m

$497

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Wed 2/26

5:20 am-1:43 pm

1 stop7h 23m

Lambert-St Louis

Mon 3/3

6:59 pm-12:31 am

1 stop6h 32m

$517

MissoulaSt. Louis

MSO - STL

MSOSTL

Missoula Johnson-Bell Field

Wed 4/16

8:00 am-4:45 pm

1 stop7h 45m

Lambert-St Louis

Mon 4/21

4:00 pm-12:25 am

2 stops9h 25m

$522

HelenaSt. Louis

HLN - STL

HLNSTL

Helena

Mon 3/24

4:19 pm-11:59 pm

1 stop6h 40m

Lambert-St Louis

Thu 3/27

6:44 am-3:39 pm

1 stop9h 55m

$530

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/30

Showing 1-10 of 26 results
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Best time to book a flight from Montana to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Montana 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.

Travel insights for flights from Montana to St. Louis

Get recent, data-driven insights about flights from Montana to St. Louis including ideal travel times, pricing trends, and more.

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

Currently, August is the cheapest month in which you can book a flight from Montana to St. Louis (average of $311). Flying from Montana to St. Louis in March is currently the most expensive (average of $356). 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 MT to STL?

Find hourly flight availability from Montana to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 30, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Montana to St. Louis as you normally would.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated January 30, 2025.
Peruse reviews from past customers who have flown with Southwest, Alaska Airlines and Delta from Montana to St. Louis to help guide your decision. 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
4,585 reviews

Overall

8.1

Comfort

8.1

Boarding

8.2

Crew

8.7

Food

7.1

Entertainment

7.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,585 reviews
Southwest
8.1
Very good
4,585 reviews

Overall

8.1

Comfort

8.1

Boarding

8.2

Crew

8.7

Food

7.1

Entertainment

7.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,688 reviews
Southwest
8.1
Very good
4,585 reviews

Overall

8.1

Comfort

8.1

Boarding

8.2

Crew

8.7

Food

7.1

Entertainment

7.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,454 reviews
Southwest
8.1
Very good
4,585 reviews

Overall

8.1

Comfort

8.1

Boarding

8.2

Crew

8.7

Food

7.1

Entertainment

7.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,913 reviews
Southwest
8.1
Very good
4,585 reviews

Overall

8.1

Comfort

8.1

Boarding

8.2

Crew

8.7

Food

7.1

Entertainment

7.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,585 reviews

Overall

8.1

Comfort

8.1

Boarding

8.2

Crew

8.7

Food

7.1

Entertainment

7.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Related info for your journey

Find useful and relevant information for your journey from Montana to St. Louis. 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 into for flights to St. Louis from Montana?

    Most people fly into Lambert-St Louis (STL) if they book a flight to St. Louis from 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 Montana to St. Louis one-way?

    The cheapest airlines for a one-way flight from Montana to St. Louis are Delta ($153), American Airlines ($194), and Alaska Airlines ($217).

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

    The most popular route from Montana to St. Louis is Bozeman Gallatin Field - Lambert-St Louis. You may also consider Billings Logan Intl - Lambert-St Louis or Kalispell Glacier Park - Lambert-St Louis.

  • Can I find deals for flights from Montana to St. Louis that include hotel bookings?

    Yes. In addition to deals on Montana to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Montana to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Montana to St. Louis.

  • Can I find deals for business class flights from Montana to St. Louis?

    Yes. Cheapflights offers flight deals from Montana to St. Louis 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 Montana to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Montana to St. Louis (average of $311). Flying from Montana to St. Louis in March is currently the most expensive (average of $356). 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

Traveling to a place near Montana?

Book flights to Montana if you plan to visit one of these locations
Fenton
Fairview Heights
Maryland Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Alton
Farmington
Chesterfield

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Alternative routes for Montana to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Montana to St. Louis

Discover the top 4 airlines that operate flights from Montana to St. Louis. 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 January 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$234Average$396FlexibilityNo cancel feeOn-time63%
DeltaCheapest$236Average$480FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$268Average$574FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$280Average$536FlexibilityNo cancel feeOn-time75%
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