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

American Airlines, Delta, and United Airlines are the most popular carriers operating from Lambert-St Louis to Missoula Johnson-Bell Field

What airlines fly to Missoula?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to Missoula from St. Louis according to our data. United Airlines is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Missoula. Keep in mind that there are 4 different airlines that fly to Missoula on a routine basis, so you have a few additional options to choose from.

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 4 operators available for flights from Lambert-St Louis Airport to Missoula Johnson-Bell Field Airport as of August 2025.

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.

$176 Cheap Flights from St. Louis to Missoula (STL-MSO) in 2025

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Find the cheapest flights from St. Louis to Missoula (STL-MSO)

Round-trip

One-way

Last minute

Cheap round-trip flights

6:10 am - 11:18 pmSTL-MSO

18h 08m1 stop

1:51 pm - 10:50 pmMSO-STL

7h 59m1 stop

$340American Airlines

Find Deal

Tue, Sep 16 - Tue, Sep 23

6:45 pm - 11:10 pmSTL-MSO

5h 25m1 stop

3:33 pm - 11:09 pmMSO-STL

6h 36m1 stop

$351Delta

Find Deal

Tue, Sep 9 - Tue, Sep 16

3:36 pm - 11:49 pmSTL-MSO

9h 13m2 stops

3:33 pm - 11:09 pmMSO-STL

6h 36m1 stop

$356Delta

Find Deal

Tue, Sep 9 - Tue, Sep 16

6:33 am - 12:18 pmSTL-MSO

6h 45m1 stop

4:12 pm - 12:03 amMSO-STL

6h 51m1 stop

$365Hawaiian Airlines

Find Deal

Mon, Oct 20 - Mon, Oct 20

3:35 pm - 12:27 amSTL-MSO

9h 52m1 stop

6:40 pm - 2:39 pmMSO-STL

18h 59m1 stop

$370Alaska Airlines

Find Deal

Mon, Sep 8 - Mon, Sep 15

7:00 am - 1:19 pmSTL-MSO

31h 19m2 stops

4:12 pm - 11:59 pmMSO-STL

6h 47m1 stop

$378Alaska Airlines

Find Deal

Fri, Oct 31 - Mon, Nov 3

6:30 pm - 12:27 amSTL-MSO

6h 57m1 stop

4:14 pm - 11:59 pmMSO-STL

6h 45m1 stop

$413Hawaiian Airlines

Find Deal

Mon, Sep 8 - Mon, Sep 15

6:10 am - 11:18 pmSTL-MSO

18h 08m1 stop

1:51 pm - 10:50 pmMSO-STL

7h 59m1 stop

$415American Airlines

Find Deal

Tue, Sep 9 - Tue, Sep 16

8:15 am - 9:22 pmSTL-MSO

14h 07m2 stops

2:40 pm - 8:46 pmMSO-STL

5h 06m1 stop

$436United Airlines

Find Deal

Tue, Sep 9 - Tue, Sep 16

8:15 am - 9:22 pmSTL-MSO

14h 07m2 stops

2:40 pm - 2:19 pmMSO-STL

22h 39m2 stops

$453United Airlines

Find Deal

Tue, Sep 9 - Tue, Sep 16

American Airlines flights from St. Louis to Missoula

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

American Airlines

Sep 16

STL6:10 amLambert-St Louis

18h 08m

1 stop

MSO11:18 pmMissoula Johnson-Bell Field

Sep 23

MSO1:51 pmMissoula Johnson-Bell Field

7h 59m

1 stop

STL10:50 pmLambert-St Louis

$340

Find similar

American Airlines

Sep 9

STL6:10 amLambert-St Louis

18h 08m

1 stop

MSO11:18 pmMissoula Johnson-Bell Field

Sep 16

MSO1:51 pmMissoula Johnson-Bell Field

7h 59m

1 stop

STL10:50 pmLambert-St Louis

$415

Find similar

American Airlines

Sep 8

STL2:11 pmLambert-St Louis

10h 07m

2 stops

MSO11:18 pmMissoula Johnson-Bell Field

Sep 15

MSO1:51 pmMissoula Johnson-Bell Field

8h 57m

2 stops

STL11:48 pmLambert-St Louis

$1,118

Find similar

Alaska Airlines flights from St. Louis to Missoula

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

Alaska Airlines

Sep 8

STL3:35 pmLambert-St Louis

9h 52m

1 stop

MSO12:27 amMissoula Johnson-Bell Field

Sep 15

MSO6:40 pmMissoula Johnson-Bell Field

18h 59m

1 stop

STL2:39 pmLambert-St Louis

$370

Find similar

Alaska Airlines

Oct 31

STL7:00 amLambert-St Louis

31h 19m

2 stops

MSO1:19 pmMissoula Johnson-Bell Field

Nov 3

MSO4:12 pmMissoula Johnson-Bell Field

6h 47m

1 stop

STL11:59 pmLambert-St Louis

$378

Find similar

Alaska Airlines

Sep 9

STL6:00 amLambert-St Louis

7h 32m

1 stop

MSO12:32 pmMissoula Johnson-Bell Field

Sep 16

MSO6:40 pmMissoula Johnson-Bell Field

21h 54m

1 stop

STL5:34 pmLambert-St Louis

$396

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

Tue 9/16

6:10 am-11:18 pm

1 stop18h 08m

Missoula Johnson-Bell Field

Tue 9/23

1:51 pm-10:50 pm

1 stop7h 59m

$340

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

Tue 9/9

6:45 pm-11:10 pm

1 stop5h 25m

Missoula Johnson-Bell Field

Tue 9/16

3:33 pm-11:09 pm

1 stop6h 36m

$351

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

Tue 9/9

3:36 pm-11:49 pm

2 stops9h 13m

Missoula Johnson-Bell Field

Tue 9/16

3:33 pm-11:09 pm

1 stop6h 36m

$356

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

Mon 10/20

6:33 am-12:18 pm

1 stop6h 45m

Missoula Johnson-Bell Field

Mon 10/20

4:12 pm-12:03 am

1 stop6h 51m

$365

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

Mon 9/8

3:35 pm-12:27 am

1 stop9h 52m

Missoula Johnson-Bell Field

Mon 9/15

6:40 pm-2:39 pm

1 stop18h 59m

$370

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

Fri 10/31

7:00 am-1:19 pm

2 stops31h 19m

Missoula Johnson-Bell Field

Mon 11/3

4:12 pm-11:59 pm

1 stop6h 47m

$378

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

Mon 9/8

6:30 pm-12:27 am

1 stop6h 57m

Missoula Johnson-Bell Field

Mon 9/15

4:14 pm-11:59 pm

1 stop6h 45m

$413

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

Tue 9/9

6:10 am-11:18 pm

1 stop18h 08m

Missoula Johnson-Bell Field

Tue 9/16

1:51 pm-10:50 pm

1 stop7h 59m

$415

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

Tue 9/9

8:15 am-9:22 pm

2 stops14h 07m

Missoula Johnson-Bell Field

Tue 9/16

2:40 pm-8:46 pm

1 stop5h 06m

$436

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

Tue 9/9

8:15 am-9:22 pm

2 stops14h 07m

Missoula Johnson-Bell Field

Tue 9/16

2:40 pm-2:19 pm

2 stops22h 39m

$453

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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 cheapest month to fly to Missoula?

The month of April is, on average, the cheapest month to fly to Missoula from St. Louis, with most prices found around $336. If you are unable to visit Missoula during the month of April, then departing from St. Louis during the month September is also very affordable. Most momondo users find prices during this month for around $353.

What is the cheapest day to depart on your flight to Missoula?

On average, the least expensive day to fly to Missoula from St. Louis is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $447. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from St. Louis because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $638.

What is the cheapest time of day to depart on your flight to Missoula?

The cheapest time of day to fly to Missoula is in the evening when flights can be purchased for as low as $205. Flights in the morning are often more expensive with an average ticket price of $584.

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

Best Price Found	$176
Fastest flight time	5h 25m
Direct flights	None
Airports in Missoula	1 airport

The best one-way flight to Missoula from St. Louis in the past 72 hours is $176. The best round-trip flight deal from St. Louis to Missoula found on momondo in the last 72 hours is $340.

The fastest flight from St. Louis to Missoula takes 5h 25m

There are no direct flights from St. Louis to Missoula. Popular non-direct route for this connection is Lambert-St Louis Airport - Missoula Johnson-Bell Field Airport.

There is 1 airport near Missoula: Missoula Johnson-Bell Field (MSO)

Search flight deals

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 25m 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 4 operators available for flights from Lambert-St Louis Airport to Missoula Johnson-Bell Field Airport as of August 2025.
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 Delta, making up 38% of the total bookings. Other popular airlines include United Airlines with 27%, American Airlines with 21%, and Alaska Airlines with 13%.

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 $288	Free Cancellation	Rating 8.0 7,980 reviews	Search Delta flights
American Airlines	PriceFrom $294	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Alaska Airlines	PriceFrom $325	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $371	Free Cancellation	Rating 7.4 8,916 reviews	Search United Airlines flights

Why use momondo?

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.

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Cheap flights from St. Louis to Missoula from $176

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Missoula departing on 9/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Find the cheapest flights from St. Louis to Missoula (STL-MSO)

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American Airlines flights from St. Louis to Missoula

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

Alaska Airlines flights from St. Louis to Missoula

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

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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

What is the cheapest month to fly to Missoula?

What is the cheapest day to depart on your flight to Missoula?

What is the cheapest time of day to depart on your flight to Missoula?

The cheapest time of day to fly to Missoula is in the evening when flights can be purchased for as low as $205. Flights in the morning are often more expensive with an average ticket price of $584.

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

American Airlines, Delta, and United Airlines are the most popular carriers operating from Lambert-St Louis to Missoula Johnson-Bell Field

What airlines fly to Missoula?

When to book flights from St. Louis to Missoula

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

Best Price Found

Fastest flight time

Direct flights

Airports in Missoula

How far is Lambert-St Louis to Missoula Johnson-Bell Field by plane?

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

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

How old do you have to be to fly 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?

What is the most popular airline from St. Louis to Missoula?

Best airlines flying from St. Louis to Missoula

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

Why use momondo?

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

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

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

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

An easier way to manage your Missoula trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Montana