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

A quick flight from Missoula to St. Louis can take about 4h 58m. United Airlines provides one of the quickest options available for as low as $384. Airlines will cover a distance of 1320 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 flying from Missoula to St. Louis round-trip?

Our cheapest airline available from Missoula to St. Louis is Delta. Our recent data shows that you can find tickets from as low as $164 on this airline. An additional option worth looking into is United Airlines, starting at $306. These flights start at 66% lower than the current average price 3 months from now.

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 is the cheapest time of day to fly from MSO to STL?

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

Most accurate provider : When it comes to deals on Missoula-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Missoula-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Missoula-St. Louis flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Missoula-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Missoula-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Missoula 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.

$200+ Cheap Flights from Missoula to St. Louis

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Cheap flight deals from Missoula to St. Louis

Cheapest

Best

Last-minute

One-way

Cheapest flights from Missoula to St. Louis
Explore the most affordable flight options available from Missoula to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 23, 2026.

Thu 11/52:37 pm -

1 stop5h 22m

Mon 11/94:39 pm -

1 stop6h 08m

Deal found 10/21

$459

Mon 12/76:15 am -

1 stop5h 38m

Thu 12/108:40 am -

1 stop5h 52m

Deal found 10/20

$481

Mon 12/76:25 pm -

1 stop5h 21m

Thu 12/102:17 pm -

2 stops11h 20m

Deal found 10/20

$486

Thu 11/52:37 pm -

1 stop5h 22m

Tue 11/108:50 am -

1 stop8h 36m

Deal found 10/20

$511

Sun 12/66:15 am -

1 stop5h 38m

Sat 12/1210:50 am -

2 stops11h 57m

Deal found 10/18

$514

Thu 11/51:14 pm -

2 stops9h 40m

Tue 11/102:21 pm -

2 stops10h 59m

Deal found 10/20

$521

Fri 11/277:00 am -

2 stops11h 31m

Sat 11/286:40 am -

2 stops11h 58m

Deal found 10/21

$529

Tue 11/32:37 pm -

1 stop5h 22m

Sat 11/78:50 am -

1 stop8h 36m

Deal found 10/18

$570

Best flights from Missoula to St. Louis
Discover carefully curated flight deals from Missoula to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 23, 2026.

Wed 1/62:40 pm -

1 stop4h 58m

Sat 1/98:30 am -

2 stops14h 22m

Deal found 10/21

$384

Mon 12/76:25 pm -

1 stop5h 21m

Thu 12/102:17 pm -

2 stops11h 20m

Deal found 10/20

$486

Mon 12/76:15 am -

1 stop5h 38m

Thu 12/108:40 am -

1 stop5h 52m

Deal found 10/20

$481

Sat 2/66:10 am -

1 stop6h 53m

Tue 2/98:52 am -

1 stop5h 44m

Deal found 10/22

$489

Last-minute flights from Missoula to St. Louis
Discover last-minute flight deals from Missoula to St. Louis. Data last updated October 23, 2026 and is based on user searches.

Thu 10/222:38 pm -

1 stop8h 06m

Sun 10/258:50 am -

1 stop8h 36m

Deal found 10/18

$599

Tue 11/32:37 pm -

1 stop5h 22m

Sat 11/78:50 am -

1 stop8h 36m

Deal found 10/18

$570

Thu 11/52:37 pm -

1 stop5h 22m

Mon 11/94:39 pm -

1 stop6h 08m

Deal found 10/21

$459

Thu 11/52:37 pm -

1 stop5h 22m

Tue 11/108:50 am -

1 stop8h 36m

Deal found 10/20

$511

Thu 11/51:14 pm -

2 stops9h 40m

Tue 11/102:21 pm -

2 stops10h 59m

Deal found 10/20

$521

Fri 11/277:00 am -

2 stops11h 31m

Sat 11/286:40 am -

2 stops11h 58m

Deal found 10/21

$529

One-way flights from Missoula to St. Louis
Search for one-way flight options from Missoula to St. Louis. Find affordable one-way fares based on user searches. Data last updated October 23, 2026.

Mon 11/235:30 am -

1 stop7h 00m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/21

$200

Thu 12/244:07 pm -

1 stop6h 52m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/22

$225

Thu 12/241:16 pm -

1 stop6h 50m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/20

$241

Thu 12/246:00 am -

2 stops11h 18m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/20

$311

Mon 11/236:22 am -

3 stops16h 00m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/21

$610

Find flight deals from Missoula to St. Louis

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$379 (United Airlines)
One-way from	$200 (Delta)
Popular in	July
Cheapest in	April

Provider with most accurate pricing for Missoula Johnson-Bell Field-Lambert-St Louis flight deals.

Search Deals

Provider most trusted by Cheapflights users for Missoula Johnson-Bell Field-Lambert-St Louis flights.

Search Deals

From Missoula Johnson-Bell Field to Lambert-St Louis

Search Deals

One-way flight from Missoula Johnson-Bell Field to Lambert-St Louis

Search Deals

Highest demand for flights based on searches. 14% potential increase in price ($84 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($21 potential savings vs. average RT price).

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

MissoulaSt. Louis

MSO Missoula Johnson-Bell Field - STL Lambert-St Louis

MSOSTL

Missoula Johnson-Bell Field

Thu 12/24

1:16 pm-9:06 pm

1 stop6h 50m

Lambert-St Louis

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$200

MissoulaSt. Louis

MSO Missoula Johnson-Bell Field - STL Lambert-St Louis

MSOSTL

Missoula Johnson-Bell Field

Mon 11/23

5:30 am-4:31 pm

2 stops10h 01m

Lambert-St Louis

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$205

MissoulaSt. Louis

MSO Missoula Johnson-Bell Field - STL Lambert-St Louis

MSOSTL

Missoula Johnson-Bell Field

Thu 12/24

4:07 pm-11:59 pm

1 stop6h 52m

Lambert-St Louis

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$225

MissoulaSt. Louis

MSO Missoula Johnson-Bell Field - STL Lambert-St Louis

MSOSTL

Missoula Johnson-Bell Field

Thu 12/24

6:00 am-6:18 pm

2 stops11h 18m

Lambert-St Louis

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$311

MissoulaSt. Louis

MSO Missoula Johnson-Bell Field - STL Lambert-St Louis

MSOSTL

Missoula Johnson-Bell Field

Wed 1/6

2:40 pm-8:38 pm

1 stop4h 58m

Lambert-St Louis

Sat 1/9

8:30 am-9:52 pm

2 stops14h 22m

$384

MissoulaSt. Louis

MSO Missoula Johnson-Bell Field - STL Lambert-St Louis

MSOSTL

Missoula Johnson-Bell Field

Mon 12/7

6:15 am-12:53 pm

1 stop5h 38m

Lambert-St Louis

Thu 12/10

8:40 am-1:32 pm

1 stop5h 52m

$481

MissoulaSt. Louis

MSO Missoula Johnson-Bell Field - STL Lambert-St Louis

MSOSTL

Missoula Johnson-Bell Field

Mon 12/7

6:25 pm-12:46 am

1 stop5h 21m

Lambert-St Louis

Thu 12/10

2:17 pm-12:37 am

2 stops11h 20m

$486

MissoulaSt. Louis

MSO Missoula Johnson-Bell Field - STL Lambert-St Louis

MSOSTL

Missoula Johnson-Bell Field

Sat 2/6

6:10 am-2:03 pm

1 stop6h 53m

Lambert-St Louis

Tue 2/9

8:52 am-1:36 pm

1 stop5h 44m

$489

MissoulaSt. Louis

MSO Missoula Johnson-Bell Field - STL Lambert-St Louis

MSOSTL

Missoula Johnson-Bell Field

Mon 11/23

6:22 am-11:22 pm

3 stops16h 00m

Lambert-St Louis

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$610

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/21

Sorted by cheapest first

Compare providers for flights from Missoula to St. Louis

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Missoula to St. Louis in October.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Missoula-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Missoula-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Missoula-St. Louis flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Missoula-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Missoula-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Missoula to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Missoula with our price prediction graph.

MSO-STL

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.

Reviews of airlines servicing St. Louis

See what other customers who have flown with Delta and United Airlines from Missoula to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

7.8

Good

8,668 reviews

Reviews

1 / 20

6.0

Good

Ellen,Oct 2026

GRR - ATL

The flight was delayed more then 30 minutes after I hurried and stressed to get to my connecting gate in Atlanta.

Delta

7.8

Good

8,668 reviews

Delta

7.8

Good

8,668 reviews

Reviews

1 / 20

6.0

Good

Ellen,Oct 2026

GRR - ATL

The flight was delayed more then 30 minutes after I hurried and stressed to get to my connecting gate in Atlanta.

United Airlines

7.3

Good

10,420 reviews

Delta

7.8

Good

8,668 reviews

Reviews

1 / 20

6.0

Good

Ellen,Oct 2026

GRR - ATL

The flight was delayed more then 30 minutes after I hurried and stressed to get to my connecting gate in Atlanta.

Related info for your journey

How long is the flight from Missoula to St. Louis?
A quick flight from Missoula to St. Louis can take about 4h 58m. United Airlines provides one of the quickest options available for as low as $384. Airlines will cover a distance of 1320 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 flying from Missoula to St. Louis round-trip?
Our cheapest airline available from Missoula to St. Louis is Delta. Our recent data shows that you can find tickets from as low as $164 on this airline. An additional option worth looking into is United Airlines, starting at $306. These flights start at 66% lower than the current average price 3 months from now.
Can I find deals for flights from Missoula to St. Louis that include hotel bookings?
Yes. In addition to deals on Missoula to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Missoula to St. Louis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Missoula to St. Louis.
Can I find deals for business class flights from Missoula to St. Louis?
Yes. Cheapflights offers flight deals from Missoula 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.

See more FAQs

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Top 2 airlines flying from Missoula to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$164	Average$388	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$306	Average$549	FlexibilityNo cancel fee	On-time69%

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$200+ Cheap flights from Missoula to St. Louis (MSO - STL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/24. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Missoula to St. Louis with Cheapflights

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Cheap flight deals from Missoula to St. Louis

Cheapest flights from Missoula to St. LouisExplore the most affordable flight options available from Missoula to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 23, 2026.

Explore the most affordable flight options available from Missoula to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 23, 2026.

Best flights from Missoula to St. LouisDiscover carefully curated flight deals from Missoula to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 23, 2026.

Discover carefully curated flight deals from Missoula to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 23, 2026.

Last-minute flights from Missoula to St. LouisDiscover last-minute flight deals from Missoula to St. Louis. Data last updated October 23, 2026 and is based on user searches.

Discover last-minute flight deals from Missoula to St. Louis. Data last updated October 23, 2026 and is based on user searches.

One-way flights from Missoula to St. LouisSearch for one-way flight options from Missoula to St. Louis. Find affordable one-way fares based on user searches. Data last updated October 23, 2026.

Search for one-way flight options from Missoula to St. Louis. Find affordable one-way fares based on user searches. Data last updated October 23, 2026.

Find flight deals from Missoula to St. Louis

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Round-trip from

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

Compare providers for flights from Missoula to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Missoula to St. Louis in October.

Best time to book a flight from Missoula to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Missoula with our price prediction graph.

Reviews of airlines servicing St. Louis

See what other customers who have flown with Delta and United Airlines from Missoula to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

What are the cheapest airlines flying from Missoula to St. Louis round-trip?

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

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

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

Traveling to a place near St. Louis?

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Alternative routes for Missoula to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to St. Louis by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Missoula to St. Louis by cabin class

Find flights from Missoula to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Missoula and St. Louis flights

Browse other Missoula and St. Louis flight options. Last updated on October 23, 2026.

Other flights from Missoula

Browse through other flights departing from Missoula. Flights are based on user searches made on Cheapflights and were last updated on October 23, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Other flights to St. Louis

Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 23, 2026.

Top 2 airlines flying from Missoula to St. Louis

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Travel Smart

Cheapest flights from Missoula to St. Louis
Explore the most affordable flight options available from Missoula to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 23, 2026.

Best flights from Missoula to St. Louis
Discover carefully curated flight deals from Missoula to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 23, 2026.

Last-minute flights from Missoula to St. Louis
Discover last-minute flight deals from Missoula to St. Louis. Data last updated October 23, 2026 and is based on user searches.

One-way flights from Missoula to St. Louis
Search for one-way flight options from Missoula to St. Louis. Find affordable one-way fares based on user searches. Data last updated October 23, 2026.