What is the cheapest airline that flies from Lambert-St Louis to Missoula Johnson-Bell Field?

Alaska Airlines is the most popular carrier operating from Lambert-St Louis to Missoula Johnson-Bell Field

When did momondo last update prices for flights from Lambert-St Louis Airport to Missoula Johnson-Bell Field Airport?

Prices for flights from Lambert-St Louis Airport to Missoula Johnson-Bell Field Airport are updated daily.

How many operators does momondo search for flights from Lambert-St Louis Airport to Missoula Johnson-Bell Field Airport?

There are 2 operators available for flights from Lambert-St Louis Airport to Missoula Johnson-Bell Field Airport as of August 2026.

How old do you have to be to fly from Lambert-St Louis Airport to Missoula Johnson-Bell Field Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Missoula Johnson-Bell Field Airport.

What documentation or ID do you need to fly to Missoula Johnson-Bell Field Airport?

The travel and health documents you'll need for your trip to Missoula Johnson-Bell Field Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Missoula Johnson-Bell Field Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$220 Cheap Flights from St. Louis to Missoula in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Missoula

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 am - 8:15 pmSTL Lambert-St Louis-MSO Missoula Johnson-Bell Field

15h 15m2 stops Chicago O'Hare Intl Dallas/Fort Worth

1:10 pm - 10:52 amMSO Missoula Johnson-Bell Field-STL Lambert-St Louis

20h 42m1 stop Chicago O'Hare Intl

$447American Airlines

Fri, Nov 13 - Tue, Nov 17

8:10 pm - 8:59 pmSTL Lambert-St Louis-MSO Missoula Johnson-Bell Field

25h 49m2 stops Denver Intl Las Vegas Harry Reid Intl

9:49 pm - 11:17 amMSO Missoula Johnson-Bell Field-STL Lambert-St Louis

12h 28m1 stop Las Vegas Harry Reid Intl

$448Multiple Airlines

Wed, Sep 23 - Sun, Sep 27

6:00 am - 8:15 pmSTL Lambert-St Louis-MSO Missoula Johnson-Bell Field

15h 15m2 stops Chicago O'Hare Intl Dallas/Fort Worth

6:50 am - 11:59 pmMSO Missoula Johnson-Bell Field-STL Lambert-St Louis

16h 09m2 stops Dallas/Fort Worth Chicago O'Hare Intl

$452American Airlines

Fri, Nov 13 - Tue, Nov 17

2:54 pm - 8:15 pmSTL Lambert-St Louis-MSO Missoula Johnson-Bell Field

6h 21m1 stop Dallas/Fort Worth

1:10 pm - 10:52 amMSO Missoula Johnson-Bell Field-STL Lambert-St Louis

20h 42m1 stop Chicago O'Hare Intl

$457American Airlines

Fri, Nov 13 - Tue, Nov 17

1:08 pm - 9:47 pmSTL Lambert-St Louis-MSO Missoula Johnson-Bell Field

9h 39m2 stops Chicago O'Hare Intl Denver Intl

6:15 am - 12:38 pmMSO Missoula Johnson-Bell Field-STL Lambert-St Louis

5h 23m1 stop Denver Intl

$480United Airlines

Tue, Nov 10 - Sun, Nov 15

6:00 am - 11:42 amSTL Lambert-St Louis-MSO Missoula Johnson-Bell Field

6h 42m1 stop Chicago O'Hare Intl

5:24 pm - 11:31 pmMSO Missoula Johnson-Bell Field-STL Lambert-St Louis

5h 07m1 stop Denver Intl

$521United Airlines

Thu, Aug 27 - Thu, Aug 27

9:00 am - 1:38 pmSTL Lambert-St Louis-MSO Missoula Johnson-Bell Field

5h 38m1 stop Denver Intl

2:40 pm - 8:46 pmMSO Missoula Johnson-Bell Field-STL Lambert-St Louis

5h 06m1 stop Denver Intl

$550United Airlines

Thu, Aug 27 - Fri, Aug 28

4:40 pm - 9:31 pmSTL Lambert-St Louis-MSO Missoula Johnson-Bell Field

5h 51m1 stop Denver Intl

10:38 am - 10:01 pmMSO Missoula Johnson-Bell Field-STL Lambert-St Louis

10h 23m2 stops Denver Intl Chicago O'Hare Intl

$555United Airlines

Thu, Aug 27 - Fri, Aug 28

7:45 pm - 12:18 amSTL Lambert-St Louis-MSO Missoula Johnson-Bell Field

5h 33m1 stop Salt Lake City

6:27 pm - 12:41 amMSO Missoula Johnson-Bell Field-STL Lambert-St Louis

5h 14m1 stop Salt Lake City

$630Delta

Thu, Aug 27 - Sun, Aug 30

8:48 am - 2:43 pmSTL Lambert-St Louis-MSO Missoula Johnson-Bell Field

6h 55m1 stop Minneapolis St Paul

6:27 pm - 12:41 amMSO Missoula Johnson-Bell Field-STL Lambert-St Louis

5h 14m1 stop Salt Lake City

$659Delta

Thu, Aug 27 - Sun, Aug 30

Cheap last minute flights

Enter your travel dates to find the best prices.

6:35 am - 3:17 pmSTL Lambert-St Louis-MSO Missoula Johnson-Bell Field

9h 42m1 stop Seattle/Tacoma Intl

7:15 am - 6:38 pmMSO Missoula Johnson-Bell Field-STL Lambert-St Louis

10h 23m1 stop Seattle/Tacoma Intl

$599Alaska Airlines

Thu, Aug 20 - Sun, Aug 23

5:34 pm - 11:47 pmSTL Lambert-St Louis-MSO Missoula Johnson-Bell Field

7h 13m1 stop Minneapolis St Paul

3:36 pm - 11:26 pmMSO Missoula Johnson-Bell Field-STL Lambert-St Louis

6h 50m1 stop Minneapolis St Paul

$704Delta

Thu, Aug 20 - Sun, Aug 23

5:10 am - 9:57 amSTL Lambert-St Louis-MSO Missoula Johnson-Bell Field

5h 47m1 stop Denver Intl

2:40 pm - 11:31 pmMSO Missoula Johnson-Bell Field-STL Lambert-St Louis

7h 51m1 stop Denver Intl

$714United Airlines

Thu, Aug 20 - Sun, Aug 23

9:30 am - 10:30 pmSTL Lambert-St Louis-MSO Missoula Johnson-Bell Field

14h 00m2 stops Chicago O'Hare Intl Los Angeles

2:40 pm - 11:31 pmMSO Missoula Johnson-Bell Field-STL Lambert-St Louis

7h 51m1 stop Denver Intl

$719United Airlines

Thu, Aug 20 - Sun, Aug 23

9:30 am - 10:30 pmSTL Lambert-St Louis-MSO Missoula Johnson-Bell Field

14h 00m2 stops Chicago O'Hare Intl Los Angeles

7:15 am - 8:46 pmMSO Missoula Johnson-Bell Field-STL Lambert-St Louis

12h 31m2 stops Los Angeles Denver Intl

$774United Airlines

Thu, Aug 20 - Sun, Aug 23

12:52 pm - 11:47 pmSTL Lambert-St Louis-MSO Missoula Johnson-Bell Field

11h 55m2 stops Atlanta Hartsfield-Jackson Minneapolis St Paul

6:27 pm - 12:41 amMSO Missoula Johnson-Bell Field-STL Lambert-St Louis

5h 14m1 stop Salt Lake City

$924Delta

Thu, Aug 20 - Sun, Aug 23

12:52 pm - 11:47 pmSTL Lambert-St Louis-MSO Missoula Johnson-Bell Field

11h 55m2 stops Atlanta Hartsfield-Jackson Minneapolis St Paul

6:27 pm - 8:08 amMSO Missoula Johnson-Bell Field-STL Lambert-St Louis

12h 41m2 stops Salt Lake City Atlanta Hartsfield-Jackson

$1,197Delta

Thu, Aug 20 - Sun, Aug 23

8:50 am - 10:30 pmSTL Lambert-St Louis-MSO Missoula Johnson-Bell Field

14h 40m2 stops Chicago O'Hare Intl Los Angeles

6:15 am - 8:29 pmMSO Missoula Johnson-Bell Field-STL Lambert-St Louis

13h 14m3 stops Denver Intl Austin Bergstrom Houston George Bush Intcntl

$1,590United Airlines

Thu, Aug 20 - Sun, Aug 23

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American Airlines flights from St. Louis to Missoula

Our best American Airlines deals on St. Louis to Missoula flight tickets

American Airlines

Nov 13

STL6:00 amLambert-St Louis

15h 15m

2 stops

MSO8:15 pmMissoula Johnson-Bell Field

Nov 17

MSO1:10 pmMissoula Johnson-Bell Field

20h 42m

1 stop

STL10:52 amLambert-St Louis

$447

American Airlines

Nov 13

STL6:00 amLambert-St Louis

15h 15m

2 stops

MSO8:15 pmMissoula Johnson-Bell Field

Nov 17

MSO6:50 amMissoula Johnson-Bell Field

16h 09m

2 stops

STL11:59 pmLambert-St Louis

$452

American Airlines

Nov 13

STL2:54 pmLambert-St Louis

6h 21m

1 stop

MSO8:15 pmMissoula Johnson-Bell Field

Nov 17

MSO1:10 pmMissoula Johnson-Bell Field

20h 42m

1 stop

STL10:52 amLambert-St Louis

$457

Delta flights from St. Louis to Missoula

Our best Delta deals on St. Louis to Missoula flight tickets

Delta

Aug 27

STL7:45 pmLambert-St Louis

5h 33m

1 stop

MSO12:18 amMissoula Johnson-Bell Field

Aug 30

MSO6:27 pmMissoula Johnson-Bell Field

5h 14m

1 stop

STL12:41 amLambert-St Louis

$630

Delta

Aug 27

STL8:48 amLambert-St Louis

6h 55m

1 stop

MSO2:43 pmMissoula Johnson-Bell Field

Aug 30

MSO6:27 pmMissoula Johnson-Bell Field

5h 14m

1 stop

STL12:41 amLambert-St Louis

$659

Delta

Aug 20

STL5:34 pmLambert-St Louis

7h 13m

1 stop

MSO11:47 pmMissoula Johnson-Bell Field

Aug 23

MSO3:36 pmMissoula Johnson-Bell Field

6h 50m

1 stop

STL11:26 pmLambert-St Louis

$704

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisMissoula

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

STLMSO

Lambert-St Louis

Fri 11/13

6:00 am-8:15 pm

2 stops15h 15m

Missoula Johnson-Bell Field

Tue 11/17

1:10 pm-10:52 am

1 stop20h 42m

$447

St. LouisMissoula

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

STLMSO

Lambert-St Louis

Wed 9/23

8:10 pm-8:59 pm

2 stops25h 49m

Missoula Johnson-Bell Field

Sun 9/27

9:49 pm-11:17 am

1 stop12h 28m

$448

St. LouisMissoula

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

STLMSO

Lambert-St Louis

Fri 11/13

6:00 am-8:15 pm

2 stops15h 15m

Missoula Johnson-Bell Field

Tue 11/17

6:50 am-11:59 pm

2 stops16h 09m

$452

St. LouisMissoula

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

STLMSO

Lambert-St Louis

Fri 11/13

2:54 pm-8:15 pm

1 stop6h 21m

Missoula Johnson-Bell Field

Tue 11/17

1:10 pm-10:52 am

1 stop20h 42m

$457

St. LouisMissoula

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

STLMSO

Lambert-St Louis

Tue 11/10

1:08 pm-9:47 pm

2 stops9h 39m

Missoula Johnson-Bell Field

Sun 11/15

6:15 am-12:38 pm

1 stop5h 23m

$480

St. LouisMissoula

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

STLMSO

Lambert-St Louis

Thu 8/27

6:00 am-11:42 am

1 stop6h 42m

Missoula Johnson-Bell Field

Thu 8/27

5:24 pm-11:31 pm

1 stop5h 07m

$521

Quickest round-trip

St. LouisMissoula

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

STLMSO

Lambert-St Louis

Thu 8/27

9:00 am-1:38 pm

1 stop5h 38m

Missoula Johnson-Bell Field

Fri 8/28

2:40 pm-8:46 pm

1 stop5h 06m

$550

St. LouisMissoula

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

STLMSO

Lambert-St Louis

Thu 8/27

4:40 pm-9:31 pm

1 stop5h 51m

Missoula Johnson-Bell Field

Fri 8/28

10:38 am-10:01 pm

2 stops10h 23m

$555

St. LouisMissoula

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

STLMSO

Lambert-St Louis

Thu 8/27

7:45 pm-12:18 am

1 stop5h 33m

Missoula Johnson-Bell Field

Sun 8/30

6:27 pm-12:41 am

1 stop5h 14m

$630

St. LouisMissoula

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

STLMSO

Lambert-St Louis

Thu 8/27

8:48 am-2:43 pm

1 stop6h 55m

Missoula Johnson-Bell Field

Sun 8/30

6:27 pm-12:41 am

1 stop5h 14m

$659

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first

How to get the cheapest flight ticket from St. Louis to Missoula

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the typical price of a round-trip flight between St. Louis and Missoula?

Prices are currently typical for flights on this route.

Typical prices usually range from $397 to $792.
The lowest price recently found on this route was $447.

What is the cheapest month to fly to Missoula?

The month of December is, on average, the cheapest month to fly to Missoula from St. Louis, with most prices found around $0. If you are unable to visit Missoula during the month of December, then departing from St. Louis during the month March is also very affordable. Most momondo users find prices during this month for around $257.

When to book flights from St. Louis to Missoula

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Missoula according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap St. Louis to Missoula (STL to MSO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Missoula

Fastest flight time	5h 27m
Direct flights	None

The fastest flight from St. Louis to Missoula takes 5h 27m

There are no direct flights from St. Louis to Missoula. There are no popular flight routes from St. Louis to Missoula.

Search flight deals

Frequently asked questions about flying from St. Louis to Missoula

How far is Lambert-St Louis to Missoula Johnson-Bell Field by plane?
Missoula Johnson-Bell Field is 1327.0 mi away from Lambert-St Louis. 5h 27m is a normal flight duration for this route.
When did momondo last update prices for flights from Lambert-St Louis Airport to Missoula Johnson-Bell Field Airport?
Prices for flights from Lambert-St Louis Airport to Missoula Johnson-Bell Field Airport are updated daily.
How many operators does momondo search for flights from Lambert-St Louis Airport to Missoula Johnson-Bell Field Airport?
There are 2 operators available for flights from Lambert-St Louis Airport to Missoula Johnson-Bell Field Airport as of August 2026.
How old do you have to be to fly from Lambert-St Louis Airport to Missoula Johnson-Bell Field Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Missoula Johnson-Bell Field Airport.
What documentation or ID do you need to fly to Missoula Johnson-Bell Field Airport?
The travel and health documents you'll need for your trip to Missoula Johnson-Bell Field Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Missoula Johnson-Bell Field Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from St. Louis to Missoula?
Based on momondo bookings for flights between St. Louis and Missoula, the leading airline is United Airlines, making up 52% of the total bookings. Other popular airlines include Delta with 48%.

Best airlines flying from St. Louis to Missoula

Compare and see reviews for airlines that fly from St. Louis to Missoula with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $179	Free Cancellation	Rating 7.8 8,502 reviews		Search Delta flights
United Airlines	PriceFrom $257	Free Cancellation	Rating 7.4 10,105 reviews		Search United Airlines flights

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Why should I use momondo to find a flight deal from St. Louis to Missoula?

Finding the right flight to Missoula from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Missoula quick and easy, saving you time and money.

Can I find flights from St. Louis to Missoula with flexible booking policies on momondo?

Flights from St. Louis to Missoula with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from St. Louis to Missoula?

momondo helps you find the best flight between St. Louis and Missoula by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from St. Louis to Missoula right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Missoula, momondo offers a useful price alert feature which will track prices for flights to Missoula from St. Louis and alert you when they change.