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

Alaska Airlines and Delta 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 42% 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 October 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.

$215 Cheap Flights from St. Louis to Missoula in 2025/26

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7:00 am - 3:24 pmSTL-MSO

9h 24m1 stop

1:59 pm - 3:18 pmMSO-STL

24h 19m1 stop

$388Alaska Airlines

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sab, nov 1 - sab, nov 8

7:00 am - 1:01 pmSTL-MSO

7h 01m1 stop

7:01 am - 4:27 pmMSO-STL

8h 26m1 stop

$389American Airlines

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sab, nov 1 - sab, nov 8

7:00 am - 3:24 pmSTL-MSO

9h 24m1 stop

12:59 pm - 3:18 pmMSO-STL

25h 19m2 stops

$391Alaska Airlines

Find Deal

sab, nov 1 - sab, nov 8

8:25 am - 9:47 pmSTL-MSO

14h 22m2 stops

6:20 am - 7:16 pmMSO-STL

11h 56m2 stops

$399United Airlines

Find Deal

sab, nov 1 - sab, nov 8

6:33 am - 12:18 pmSTL-MSO

6h 45m1 stop

6:32 am - 3:18 pmMSO-STL

7h 46m1 stop

$400Alaska Airlines

Find Deal

mer, ott 22 - mer, ott 29

9:00 am - 1:27 pmSTL-MSO

5h 27m1 stop

2:35 pm - 9:54 pmMSO-STL

6h 19m1 stop

$401United Airlines

Find Deal

mer, ott 22 - mer, ott 29

6:30 am - 4:10 pmSTL-MSO

10h 40m2 stops

6:20 am - 12:39 pmMSO-STL

5h 19m1 stop

$406United Airlines

Find Deal

mer, ott 22 - mer, ott 29

6:33 am - 12:18 pmSTL-MSO

6h 45m1 stop

12:59 pm - 11:59 pmMSO-STL

34h 00m2 stops

$412Alaska Airlines

Find Deal

mer, ott 22 - mer, ott 29

6:50 am - 12:27 pmSTL-MSO

6h 37m1 stop

5:25 am - 1:39 pmMSO-STL

7h 14m1 stop

$460Delta

Find Deal

sab, ott 18 - sab, ott 25

6:50 am - 12:27 pmSTL-MSO

6h 37m1 stop

5:25 am - 3:31 pmMSO-STL

9h 06m2 stops

$465Delta

Find Deal

sab, ott 18 - sab, ott 25

Alaska Airlines flights from St. Louis to Missoula

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

Alaska Airlines

Nov 1

STL7:00 amLambert-St Louis

9h 24m

1 stop

MSO3:24 pmMissoula Johnson-Bell Field

Nov 8

MSO1:59 pmMissoula Johnson-Bell Field

24h 19m

1 stop

STL3:18 pmLambert-St Louis

$388

Find similar

Alaska Airlines

Nov 1

STL7:00 amLambert-St Louis

9h 24m

1 stop

MSO3:24 pmMissoula Johnson-Bell Field

Nov 8

MSO12:59 pmMissoula Johnson-Bell Field

25h 19m

2 stops

STL3:18 pmLambert-St Louis

$391

Find similar

Alaska Airlines

Oct 22

STL6:33 amLambert-St Louis

6h 45m

1 stop

MSO12:18 pmMissoula Johnson-Bell Field

Oct 29

MSO6:32 amMissoula Johnson-Bell Field

7h 46m

1 stop

STL3:18 pmLambert-St Louis

$400

Find similar

American Airlines flights from St. Louis to Missoula

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

American Airlines

Nov 1

STL7:00 amLambert-St Louis

7h 01m

1 stop

MSO1:01 pmMissoula Johnson-Bell Field

Nov 8

MSO7:01 amMissoula Johnson-Bell Field

8h 26m

1 stop

STL4:27 pmLambert-St Louis

$389

Find similar

American Airlines

Oct 18

STL5:20 amLambert-St Louis

8h 41m

1 stop

MSO1:01 pmMissoula Johnson-Bell Field

Oct 25

MSO1:31 pmMissoula Johnson-Bell Field

6h 22m

1 stop

STL8:53 pmLambert-St Louis

$581

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

sab 11/1

7:00 am-3:24 pm

1 stop9h 24m

Missoula Johnson-Bell Field

sab 11/8

1:59 pm-3:18 pm

1 stop24h 19m

$388

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

sab 11/1

7:00 am-1:01 pm

1 stop7h 01m

Missoula Johnson-Bell Field

sab 11/8

7:01 am-4:27 pm

1 stop8h 26m

$389

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

sab 11/1

7:00 am-3:24 pm

1 stop9h 24m

Missoula Johnson-Bell Field

sab 11/8

12:59 pm-3:18 pm

2 stops25h 19m

$391

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

sab 11/1

8:25 am-9:47 pm

2 stops14h 22m

Missoula Johnson-Bell Field

sab 11/8

6:20 am-7:16 pm

2 stops11h 56m

$399

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

mer 10/22

6:33 am-12:18 pm

1 stop6h 45m

Missoula Johnson-Bell Field

mer 10/29

6:32 am-3:18 pm

1 stop7h 46m

$400

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

mer 10/22

9:00 am-1:27 pm

1 stop5h 27m

Missoula Johnson-Bell Field

mer 10/29

2:35 pm-9:54 pm

1 stop6h 19m

$401

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

mer 10/22

6:30 am-4:10 pm

2 stops10h 40m

Missoula Johnson-Bell Field

mer 10/29

6:20 am-12:39 pm

1 stop5h 19m

$406

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

mer 10/22

6:33 am-12:18 pm

1 stop6h 45m

Missoula Johnson-Bell Field

mer 10/29

12:59 pm-11:59 pm

2 stops34h 00m

$412

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

sab 10/18

6:50 am-12:27 pm

1 stop6h 37m

Missoula Johnson-Bell Field

sab 10/25

5:25 am-1:39 pm

1 stop7h 14m

$460

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

sab 10/18

6:50 am-12:27 pm

1 stop6h 37m

Missoula Johnson-Bell Field

sab 10/25

5:25 am-3:31 pm

2 stops9h 06m

$465

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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

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 January is also very affordable. Most momondo users find prices during this month for around $367.

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

Direct flights	None

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

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 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 4 operators available for flights from Lambert-St Louis Airport to Missoula Johnson-Bell Field Airport as of October 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 26%, American Airlines with 25%, and Alaska Airlines with 11%.

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 7.9 7,967 reviews	Search Delta flights
American Airlines	PriceFrom $294	Free Cancellation	Rating 7.2 11,040 reviews	Search American Airlines flights
Alaska Airlines	PriceFrom $334	Free Cancellation	Rating 8.0 11,027 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $371	Free Cancellation	Rating 7.4 8,957 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 $215

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 10/21. 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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Alaska Airlines flights from St. Louis to Missoula

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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?

Alaska Airlines and Delta 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

Direct flights

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