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

A quick flight from Missoula to St. Louis can take about 6h 47m. American Airlines provides one of the quickest options available for as low as $371. 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 $238 on this airline. An additional option worth looking into is United Airlines, starting at $274. These flights start at 49% 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Missoula-St. Louis flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

$307+ Flights from Missoula to St. Louis

Q: How much does it cost to fly round-trip from Missoula to St. Louis?

Airfare is below average for this route at the moment. Missoula to St. Louis flights typically cost between $361 and $576 in January. The cheapest round-trip price found within the last 3 days was $307 on Multiple Airlines (Jan 23-Jan 25).

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1. Tell us where you want to go

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Cheap flight deals from Missoula to St. Louis

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 December 9, 2025.

Wed 12/101:13 pmMSO - STL

1 stop4h 57mDelta

Sun 12/145:34 pmSTL - MSO

1 stop5h 21mDelta

Deal found 12/7

$646

Tue 12/94:22 pmMSO - STL

1 stop21h 05mAlaska Airlines

Thu 12/113:23 pmSTL - MSO

1 stop10h 03mAlaska Airlines

Deal found 12/7

$680

Tue 12/97:45 amMSO - STL

2 stops8h 25mDelta

Thu 12/116:15 amSTL - MSO

1 stop7h 18mDelta

Deal found 12/7

$686

Tue 12/96:29 amMSO - STL

1 stop6h 58mAlaska Airlines

Fri 12/127:00 amSTL - MSO

1 stop9h 32mAlaska Airlines

Deal found 12/7

$730

Tue 12/95:00 amMSO - STL

2 stops11h 10mDelta

Fri 12/125:34 pmSTL - MSO

1 stop5h 19mDelta

Deal found 12/7

$736

Mon 12/226:00 amMSO - STL

1 stop6h 20mUnited Airlines

Sun 12/282:45 pmSTL - MSO

1 stop7h 56mUnited Airlines

Deal found 12/9

$1,081

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 December 9, 2025.

Fri 1/2310:53 amMSO - STL

1 stop8h 55mMultiple Airlines

Sun 1/259:27 pmSTL - MSO

1 stop13h 36mMultiple Airlines

Deal found 12/8

$314

Thu 1/227:00 amMSO - STL

1 stop6h 47mAmerican Airlines

Sun 1/256:00 amSTL - MSO

1 stop7h 50mAmerican Airlines

Deal found 12/7

$371

Thu 1/221:25 pmMSO - STL

1 stop7h 13mDelta

Sun 1/253:31 pmSTL - MSO

1 stop5h 43mDelta

Deal found 12/7

$371

Fri 1/232:37 pmMSO - STL

1 stop5h 21mUnited Airlines

Sun 1/259:57 amSTL - MSO

2 stops12h 54mUnited Airlines

Deal found 12/8

$376

Thu 1/227:23 pmMSO - STL

2 stops22h 21mMultiple Airlines

Sun 1/259:27 pmSTL - MSO

1 stop13h 36mMultiple Airlines

Deal found 12/7

$345

Thu 1/226:00 amMSO - STL

2 stops10h 43mUnited Airlines

Sun 1/258:05 amSTL - MSO

2 stops8h 57mUnited Airlines

Deal found 12/7

$381

Last-minute flights from Missoula to St. Louis
Discover last-minute flight deals from Missoula to St. Louis. Data last updated December 9, 2025 and is based on user searches.

Wed 1/216:23 amMSO - STL

1 stop6h 31mAlaska Airlines

Sat 1/246:19 pmSTL - MSO

2 stops20h 04mAlaska Airlines

Deal found 12/8

$383

Thu 1/227:23 pmMSO - STL

2 stops22h 21mMultiple Airlines

Sun 1/259:27 pmSTL - MSO

1 stop13h 36mMultiple Airlines

Deal found 12/7

$345

Thu 1/227:55 amMSO - STL

1 stop7h 50mDelta

Sun 1/256:40 amSTL - MSO

1 stop6h 50mDelta

Deal found 12/9

$371

Thu 1/226:00 amMSO - STL

2 stops10h 43mUnited Airlines

Sun 1/258:05 amSTL - MSO

2 stops8h 57mUnited Airlines

Deal found 12/7

$381

Thu 1/224:20 pmMSO - STL

1 stop20h 34mAlaska Airlines

Sun 1/252:50 pmSTL - MSO

2 stops23h 33mAlaska Airlines

Deal found 12/7

$402

Fri 1/2310:53 amMSO - STL

2 stops26h 53mMultiple Airlines

Sun 1/259:27 pmSTL - MSO

1 stop13h 36mMultiple Airlines

Deal found 12/8

$307

Fri 1/236:00 amMSO - STL

2 stops12h 27mUnited Airlines

Sun 1/259:57 amSTL - MSO

2 stops12h 54mUnited Airlines

Deal found 12/8

$438

Find flight deals from Missoula to St. Louis

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$307 (Kiwi.com)
Popular in	August
Cheapest in	January
Average price	$544

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

Highest demand for flights based on searches. 13% potential increase in price ($75 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($19 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

MissoulaSt. Louis

MSO - STL

MSOSTL

Missoula Johnson-Bell Field

Fri 1/23

10:53 am-8:48 pm

1 stop8h 55m

Lambert-St Louis

Sun 1/25

9:27 pm-10:03 am

1 stop13h 36m

$314

MissoulaSt. Louis

MSO - STL

MSOSTL

Missoula Johnson-Bell Field

Thu 1/22

7:23 pm-6:44 pm

2 stops22h 21m

Lambert-St Louis

Sun 1/25

9:27 pm-10:03 am

1 stop13h 36m

$345

MissoulaSt. Louis

MSO - STL

MSOSTL

Missoula Johnson-Bell Field

Thu 1/22

7:00 am-2:47 pm

1 stop6h 47m

Lambert-St Louis

Sun 1/25

6:00 am-12:50 pm

1 stop7h 50m

$371

MissoulaSt. Louis

MSO - STL

MSOSTL

Missoula Johnson-Bell Field

Thu 1/22

1:25 pm-9:38 pm

1 stop7h 13m

Lambert-St Louis

Sun 1/25

3:31 pm-8:14 pm

1 stop5h 43m

$371

MissoulaSt. Louis

MSO - STL

MSOSTL

Missoula Johnson-Bell Field

Fri 1/23

2:37 pm-8:58 pm

1 stop5h 21m

Lambert-St Louis

Sun 1/25

9:57 am-9:51 pm

2 stops12h 54m

$376

MissoulaSt. Louis

MSO - STL

MSOSTL

Missoula Johnson-Bell Field

Thu 1/22

6:00 am-5:43 pm

2 stops10h 43m

Lambert-St Louis

Sun 1/25

8:05 am-4:02 pm

2 stops8h 57m

$381

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/8

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 December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Missoula-St. Louis flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

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 Missoula to St. Louis

How much does it cost to fly round-trip from Missoula to St. Louis?

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

7.9

Good

8,011 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Delta

7.9

Good

8,011 reviews

Delta

7.9

Good

8,011 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

United Airlines

7.4

Good

9,089 reviews

Delta

7.9

Good

8,011 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

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 6h 47m. American Airlines provides one of the quickest options available for as low as $371. 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 $238 on this airline. An additional option worth looking into is United Airlines, starting at $274. These flights start at 49% 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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Other flights to St. Louis

Top 2 airlines flying from Missoula to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$260	Average$415	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$274	Average$473	FlexibilityNo cancel fee	On-time69%

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$307+ 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 1/23. 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

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

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 December 9, 2025.

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 December 9, 2025.

Find flight deals from Missoula to St. Louis

Most accurate provider

Most trusted provider

Round-trip from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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 December.

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.

Cheapflights Insights

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

How much does it cost to fly round-trip from Missoula to St. Louis?

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

Find useful and relevant information for your journey from Missoula to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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Top 2 airlines flying from Missoula to St. Louis

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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 December 9, 2025.