How long is the flight from Montana to St. Louis?

A quick flight from Montana to St. Louis can take about 5h 08m. United Airlines provides one of the quickest options available for as low as $211. Montana and St. Louis are separated by a distance of 1163 mi. This flight may include one or multiple stops.

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 ($105), United Airlines ($143), and American Airlines ($143).

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.

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).

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

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

What are the most popular airlines that fly from Montana to St. Louis?

The most popular airlines flying from Montana to St. Louis are United Airlines, Delta and Southwest. Something to consider prior to booking your flight.

What is the cheapest time of day to fly from MT to STL?

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.

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.

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.

$106+ Flights from Montana to St. Louis

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Cheap 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 December 18, 2025.

Thu 12/254:25 pmBZN - STL

1 stop4h 57mUnited Airlines

Thu 1/19:55 amSTL - BZN

1 stop6h 15mUnited Airlines

Deal found 12/16

$279

Wed 12/244:25 pmBZN - STL

1 stop4h 57mUnited Airlines

Sat 1/38:05 amSTL - BZN

1 stop8h 05mUnited Airlines

Deal found 12/17

$299

Wed 12/312:29 pmBZN - STL

1 stop8h 22mAmerican Airlines

Sun 1/47:00 amSTL - BZN

1 stop6h 46mAmerican Airlines

Deal found 12/16

$305

Wed 12/312:38 pmMSO - STL

1 stop6h 44mUnited Airlines

Sun 1/42:45 pmSTL - MSO

1 stop7h 56mUnited Airlines

Deal found 12/16

$431

Wed 12/316:15 amBZN - STL

2 stops12h 07mUnited Airlines

Sun 1/45:02 pmSTL - BZN

1 stop6h 27mUnited Airlines

Deal found 12/16

$438

Tue 12/231:55 pmBZN - STL

1 stop7h 00mUnited Airlines

Tue 12/305:02 pmSTL - BZN

1 stop6h 27mUnited Airlines

Deal found 12/16

$525

Wed 12/2412:40 pmBZN - STL

2 stops8h 40mSouthwest

Sat 1/310:45 pmSTL - BZN

2 stops14h 10mSouthwest

Deal found 12/17

$541

Sun 12/282:38 pmMSO - STL

1 stop6h 44mUnited Airlines

Sat 1/38:05 amSTL - MSO

2 stops9h 15mUnited Airlines

Deal found 12/16

$651

Wed 12/249:44 amBTM - STL

2 stops10h 59mUnited Airlines

Sat 1/36:30 amSTL - BTM

2 stops16h 59mUnited Airlines

Deal found 12/14

$711

Tue 12/239:44 amBTM - STL

2 stops30h 02mUnited Airlines

Sat 1/36:30 amSTL - BTM

2 stops16h 59mUnited Airlines

Deal found 12/14

$840

Thu 12/186:35 amBIL - STL

1 stop5h 45mUnited Airlines

Sat 12/202:45 pmSTL - BIL

1 stop7h 39mUnited Airlines

Deal found 12/17

$1,073

Mon 12/222:38 pmMSO - STL

1 stop6h 44mUnited Airlines

Sun 12/289:00 amSTL - MSO

1 stop5h 36mUnited Airlines

Deal found 12/16

$1,156

Best flights from Montana to St. Louis
Discover carefully curated flight deals from Montana to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.

Thu 1/89:06 pmFCA - STL

1 stop23h 15mMultiple Airlines

Sun 1/1112:37 pmSTL - FCA

1 stop8h 39mMultiple Airlines

Deal found 12/16

$198

Fri 2/2010:50 amBZN - STL

1 stop5h 08mUnited Airlines

Sun 2/226:00 amSTL - BZN

1 stop8h 15mUnited Airlines

Deal found 12/17

$211

Fri 1/93:23 pmFCA - STL

1 stop7h 02mDelta

Sat 1/105:00 pmSTL - FCA

1 stop7h 18mDelta

Deal found 12/16

$257

Sat 1/313:03 pmBZN - STL

1 stop21h 51mAlaska Airlines

Tue 2/32:50 pmSTL - BZN

1 stop10h 06mAlaska Airlines

Deal found 12/15

$266

Wed 12/312:29 pmBZN - STL

1 stop8h 22mAmerican Airlines

Sun 1/47:00 amSTL - BZN

1 stop6h 46mAmerican Airlines

Deal found 12/16

$305

Thu 1/83:23 pmFCA - STL

1 stop7h 02mDelta

Sat 1/105:00 pmSTL - FCA

1 stop7h 18mDelta

Deal found 12/16

$257

Sat 1/107:00 amFCA - STL

2 stops12h 58mUnited Airlines

Sun 1/112:45 pmSTL - FCA

1 stop8h 14mUnited Airlines

Deal found 12/16

$282

Wed 2/46:50 amBZN - STL

1 stop5h 51mUnited Airlines

Sat 2/74:15 pmSTL - BZN

1 stop6h 18mUnited Airlines

Deal found 12/17

$291

Wed 2/47:20 amBZN - STL

2 stops12h 55mAlaska Airlines

Sat 2/711:05 amSTL - BZN

2 stops13h 51mAlaska Airlines

Deal found 12/17

$321

Thu 1/83:23 pmFCA - STL

1 stop7h 02mDelta

Fri 1/95:00 pmSTL - FCA

1 stop6h 52mDelta

Deal found 12/17

$298

Sat 1/311:30 pmBZN - STL

1 stop9h 29mUnited Airlines

Tue 2/311:20 amSTL - BZN

2 stops11h 13mUnited Airlines

Deal found 12/15

$296

Wed 1/216:23 amMSO - STL

1 stop6h 31mAlaska Airlines

Sat 1/246:19 pmSTL - MSO

2 stops20h 04mAlaska Airlines

Deal found 12/16

$343

Thu 1/227:55 amMSO - STL

1 stop5h 43mDelta

Sun 1/256:40 amSTL - MSO

1 stop6h 50mDelta

Deal found 12/17

$353

Thu 1/11:55 pmBZN - STL

1 stop7h 00mUnited Airlines

Mon 1/58:15 amSTL - BZN

2 stops13h 53mUnited Airlines

Deal found 12/17

$324

Wed 1/286:48 pmHLN - STL

1 stop18h 06mAlaska Airlines

Sat 1/316:19 pmSTL - HLN

1 stop24h 52mAlaska Airlines

Deal found 12/15

$402

Thu 4/166:10 pmMSO - STL

1 stop5h 26mDelta

Sun 4/196:59 pmSTL - MSO

1 stop6h 25mDelta

Deal found 12/17

$371

Sat 1/249:14 amBTM - STL

2 stops10h 59mUnited Airlines

Tue 1/274:15 pmSTL - BTM

1 stop7h 30mUnited Airlines

Deal found 12/14

$399

Mon 3/92:04 pmBIL - STL

1 stop8h 55mAlaska Airlines

Thu 3/122:47 pmSTL - BIL

2 stops23h 37mAlaska Airlines

Deal found 12/15

$449

Thu 1/16:25 amBIL - STL

1 stop7h 38mDelta

Mon 1/55:00 pmSTL - BIL

1 stop6h 31mDelta

Deal found 12/17

$431

Mon 3/92:36 pmBIL - STL

1 stop5h 19mUnited Airlines

Thu 3/125:30 amSTL - BIL

1 stop5h 23mUnited Airlines

Deal found 12/15

$413

Fri 1/92:45 pmBIL - STL

1 stop5h 13mUnited Airlines

Tue 1/134:15 pmSTL - BIL

1 stop6h 08mUnited Airlines

Deal found 12/15

$413

Thu 5/147:24 pmBIL - STL

2 stops20h 49mAlaska Airlines

Sun 5/176:22 pmSTL - BIL

1 stop21h 43mAlaska Airlines

Deal found 12/15

$566

Wed 1/286:15 amHLN - STL

2 stops8h 48mUnited Airlines

Sat 1/318:45 amSTL - HLN

1 stop13h 41mUnited Airlines

Deal found 12/16

$546

Last-minute flights from Montana to St. Louis
Discover last-minute flight deals from Montana to St. Louis. Data last updated December 18, 2025 and is based on user searches.

Wed 12/244:25 pmBZN - STL

1 stop4h 57mUnited Airlines

Sat 1/38:05 amSTL - BZN

1 stop8h 05mUnited Airlines

Deal found 12/17

$299

Thu 12/254:25 pmBZN - STL

1 stop4h 57mUnited Airlines

Thu 1/19:55 amSTL - BZN

1 stop6h 15mUnited Airlines

Deal found 12/16

$279

Wed 12/312:29 pmBZN - STL

1 stop8h 22mAmerican Airlines

Sun 1/47:00 amSTL - BZN

1 stop6h 46mAmerican Airlines

Deal found 12/16

$305

Thu 1/16:00 amBZN - STL

1 stop8h 03mDelta

Mon 1/55:00 pmSTL - BZN

1 stop7h 17mDelta

Deal found 12/17

$319

Thu 1/11:55 pmBZN - STL

1 stop7h 00mUnited Airlines

Mon 1/58:15 amSTL - BZN

2 stops13h 53mUnited Airlines

Deal found 12/17

$324

Thu 1/89:06 pmFCA - STL

1 stop23h 15mMultiple Airlines

Sun 1/1112:37 pmSTL - FCA

1 stop8h 39mMultiple Airlines

Deal found 12/16

$198

Thu 1/89:06 pmFCA - STL

1 stop14h 06mMultiple Airlines

Sat 1/107:43 pmSTL - FCA

2 stops25h 33mMultiple Airlines

Deal found 12/17

$269

Thu 1/83:23 pmFCA - STL

1 stop7h 02mDelta

Sat 1/105:00 pmSTL - FCA

1 stop7h 18mDelta

Deal found 12/17

$298

Fri 1/93:23 pmFCA - STL

1 stop7h 02mDelta

Sat 1/105:00 pmSTL - FCA

1 stop7h 18mDelta

Deal found 12/17

$257

Sat 1/107:00 amFCA - STL

2 stops12h 58mUnited Airlines

Sun 1/112:45 pmSTL - FCA

1 stop8h 14mUnited Airlines

Deal found 12/16

$282

Sat 1/313:03 pmBZN - STL

1 stop21h 51mAlaska Airlines

Tue 2/32:50 pmSTL - BZN

1 stop10h 06mAlaska Airlines

Deal found 12/15

$266

Sat 1/316:15 amBZN - STL

2 stops12h 12mUnited Airlines

Tue 2/36:30 amSTL - BZN

1 stop6h 14mUnited Airlines

Deal found 12/16

$296

One-way flights from Montana to St. Louis
Search for one-way flight options from Montana to St. Louis. Find affordable one-way fares based on user searches. Data last updated December 18, 2025.

Tue 1/207:00 amBZN - STL

1 stop6h 50mAmerican Airlines

Deal found 12/16

$106

Thu 2/261:53 pmFCA - STL

1 stop9h 06mAlaska Airlines

Deal found 12/15

$128

Tue 1/207:20 amBZN - STL

2 stops15h 39mAlaska Airlines

Deal found 12/16

$166

Sun 2/226:25 pmBZN - STL

1 stop5h 00mDelta

Deal found 12/17

$190

Thu 2/265:44 pmFCA - STL

3 stops29h 43mMultiple Airlines

Deal found 12/15

$191

Tue 12/307:00 amMSO - STL

1 stop9h 10mAmerican Airlines

Deal found 12/16

$266

Tue 1/207:25 pmBZN - STL

3 stops51h 08mMultiple Airlines

Deal found 12/16

$315

Sun 2/221:48 pmBZN - STL

2 stops23h 03mAlaska Airlines

Deal found 12/17

$348

Tue 12/308:10 amMSO - STL

2 stops7h 51mDelta

Deal found 12/16

$448

Tue 12/238:39 pmMSO - STL

3 stops37h 17mMultiple Airlines

Deal found 12/16

$471

Tue 12/308:39 pmMSO - STL

3 stops37h 17mMultiple Airlines

Deal found 12/16

$472

Sun 2/227:00 amBZN - STL

3 stops54h 09mMultiple Airlines

Deal found 12/17

$485

Find flight deals from Montana to St. Louis

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$198 (Trip.com)
One-way from	$106 (American Airlines)
Popular in	March
Cheapest in	April
Average price	$468

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

Search Deals

One-way flight from Montana to Lambert-St Louis

Search Deals

Highest demand for flights based on searches. 1% potential increase in price ($6 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Thu 1/8

9:06 pm-9:21 pm

1 stop23h 15m

Lambert-St Louis

Sun 1/11

12:37 pm-8:16 pm

1 stop8h 39m

$198

BozemanSt. Louis

BZN - STL

BZNSTL

Bozeman Gallatin Field

Fri 2/20

10:50 am-4:58 pm

1 stop5h 08m

Lambert-St Louis

Sun 2/22

6:00 am-1:15 pm

1 stop8h 15m

$211

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Fri 1/9

3:23 pm-11:25 pm

1 stop7h 02m

Lambert-St Louis

Sat 1/10

5:00 pm-11:18 pm

1 stop7h 18m

$257

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Thu 1/8

3:23 pm-11:25 pm

1 stop7h 02m

Lambert-St Louis

Sat 1/10

5:00 pm-11:18 pm

1 stop7h 18m

$257

BozemanSt. Louis

BZN - STL

BZNSTL

Bozeman Gallatin Field

Sat 1/31

3:03 pm-1:54 pm

1 stop21h 51m

Lambert-St Louis

Tue 2/3

2:50 pm-11:56 pm

1 stop10h 06m

$266

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Sat 1/10

7:00 am-8:58 pm

2 stops12h 58m

Lambert-St Louis

Sun 1/11

2:45 pm-9:59 pm

1 stop8h 14m

$282

BozemanSt. Louis

BZN - STL

BZNSTL

Bozeman Gallatin Field

Wed 2/4

6:50 am-1:41 pm

1 stop5h 51m

Lambert-St Louis

Sat 2/7

4:15 pm-9:33 pm

1 stop6h 18m

$291

BozemanSt. Louis

BZN - STL

BZNSTL

Bozeman Gallatin Field

Sat 1/31

1:30 pm-11:59 pm

1 stop9h 29m

Lambert-St Louis

Tue 2/3

11:20 am-9:33 pm

2 stops11h 13m

$296

KalispellSt. Louis

FCA - STL

FCASTL

Kalispell Glacier Park

Thu 1/8

3:23 pm-11:25 pm

1 stop7h 02m

Lambert-St Louis

Fri 1/9

5:00 pm-10:52 pm

1 stop6h 52m

$298

BozemanSt. Louis

BZN - STL

BZNSTL

Bozeman Gallatin Field

Wed 12/31

2:29 pm-11:51 pm

1 stop8h 22m

Lambert-St Louis

Sun 1/4

7:00 am-12:46 pm

1 stop6h 46m

$305

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 37 results

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.

Cheapflights Insights

Everything you need to know about your flight from Montana to St. Louis

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

Currently, March is the cheapest month in which you can book a flight from Montana to St. Louis (average of $180). Flying from Montana to St. Louis in May 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.

Related info for your journey

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.
How long is the flight from Montana to St. Louis?
A quick flight from Montana to St. Louis can take about 5h 08m. United Airlines provides one of the quickest options available for as low as $211. Montana and St. Louis are separated by a distance of 1163 mi. This flight may include one or multiple stops.
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 ($105), United Airlines ($143), and American Airlines ($143).
What are the most popular routes from Montana to St. Louis?
The most popular route from Montana to St. Louis is Missoula Johnson-Bell Field - Lambert-St Louis. You may also consider Bozeman Gallatin Field - 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, March is the cheapest month in which you can book a flight from Montana to St. Louis (average of $180). Flying from Montana to St. Louis in May 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

Edwardsville

O'Fallon

Fairview Heights

Maryland Heights

Collinsville

Swansea

Eureka

Glencoe

St. Peters

Chesterfield

Alton

Farmington

Festus

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Top 3 airlines flying from Montana to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$205	Average$437	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$249	Average$496	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$308	Average$484	FlexibilityNo cancel fee	On-time63%

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$106+ 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 1/20. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Montana to St. Louis

Cheapest flights from Montana to St. LouisExplore 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 December 18, 2025.

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 December 18, 2025.

Find flight deals from Montana to St. Louis

Keep the following information in mind while searching for Montana to St. Louis flight deals. Data was last updated December 18, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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

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.

Cheapflights Insights

Everything you need to know about your flight from Montana to St. Louis

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

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?

How long is the flight from Montana to St. Louis?

What are the cheapest airlines to fly from Montana to St. Louis one-way?

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

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

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

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

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

Traveling to a place near St. Louis?

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Alternative routes for Montana to St. Louis

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Top 3 airlines flying from Montana to St. Louis

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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 December 18, 2025.