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 43% of people opting to fly with this airline when traveling to Missoula. Keep in mind that there are 3 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 3 operators available for flights from Lambert-St Louis Airport to Missoula Johnson-Bell Field Airport as of January 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.

$289 Cheap Flights from St. Louis to Missoula in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from St. Louis to Missoula

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:40 pm - 11:30 pm

STL

MSO

5h 50m

1 stop

6:10 pm - 12:25 am

MSO

STL

5h 15m

1 stop

$289Delta

lun., feb. 23 - lun., mar. 2

1:30 pm - 10:25 pm

STL

MSO

9h 55m

2 stops

7:15 am - 8:59 pm

MSO

STL

12h 44m

2 stops

$360United Airlines

mar., jul. 21 - mar., jul. 28

9:55 am - 9:57 pm

STL

MSO

13h 02m

2 stops

2:34 pm - 8:26 pm

MSO

STL

4h 52m

1 stop

$362United Airlines

lun., feb. 23 - lun., mar. 2

6:59 pm - 12:24 am

STL

MSO

6h 25m

1 stop

6:10 pm - 12:36 am

MSO

STL

5h 26m

1 stop

$367Delta

mar., jul. 21 - mar., jul. 28

6:59 pm - 12:24 am

STL

MSO

6h 25m

1 stop

6:10 pm - 12:36 am

MSO

STL

5h 26m

1 stop

$392Delta

lun., may. 11 - lun., may. 18

2:18 pm - 12:24 am

STL

MSO

11h 06m

2 stops

6:10 pm - 12:36 am

MSO

STL

5h 26m

1 stop

$427Delta

mar., jul. 21 - mar., jul. 28

6:59 pm - 12:24 am

STL

MSO

6h 25m

1 stop

6:10 pm - 8:07 am

MSO

STL

12h 57m

2 stops

$474Delta

lun., may. 11 - lun., may. 18

6:20 pm - 3:23 pm

STL

MSO

22h 03m

2 stops

6:36 pm - 2:02 pm

MSO

STL

18h 26m

1 stop

$518Alaska Airlines

jue., jul. 16 - vie., jul. 24

7:30 pm - 3:23 pm

STL

MSO

20h 53m

1 stop

6:36 pm - 2:02 pm

MSO

STL

18h 26m

1 stop

$525Alaska Airlines

jue., jul. 16 - vie., jul. 24

2:19 pm - 11:59 pm

STL

MSO

10h 40m

2 stops

4:20 pm - 11:59 pm

MSO

STL

30h 39m

2 stops

$558Alaska Airlines

lun., feb. 23 - lun., mar. 2

Delta flights from St. Louis to Missoula

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

Delta

Feb 20

STL7:00 amLambert-St Louis

6h 26m

1 stop

MSO12:26 pmMissoula Johnson-Bell Field

Feb 24

MSO7:30 amMissoula Johnson-Bell Field

8h 15m

1 stop

STL4:45 pmLambert-St Louis

$289

Delta

Feb 19

STL3:40 pmLambert-St Louis

5h 21m

1 stop

MSO8:01 pmMissoula Johnson-Bell Field

Feb 24

MSO7:30 amMissoula Johnson-Bell Field

6h 24m

1 stop

STL2:54 pmLambert-St Louis

$314

Delta

Jul 21

STL6:59 pmLambert-St Louis

6h 25m

1 stop

MSO12:24 amMissoula Johnson-Bell Field

Jul 28

MSO6:10 pmMissoula Johnson-Bell Field

5h 26m

1 stop

STL12:36 amLambert-St Louis

$367

Alaska Airlines flights from St. Louis to Missoula

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

Alaska Airlines

Jul 16

STL6:20 pmLambert-St Louis

22h 03m

2 stops

MSO3:23 pmMissoula Johnson-Bell Field

Jul 24

MSO6:36 pmMissoula Johnson-Bell Field

18h 26m

1 stop

STL2:02 pmLambert-St Louis

$518

Alaska Airlines

Jul 16

STL7:30 pmLambert-St Louis

20h 53m

1 stop

MSO3:23 pmMissoula Johnson-Bell Field

Jul 24

MSO6:36 pmMissoula Johnson-Bell Field

18h 26m

1 stop

STL2:02 pmLambert-St Louis

$525

Alaska Airlines

Feb 19

STL10:37 amLambert-St Louis

14h 22m

2 stops

MSO11:59 pmMissoula Johnson-Bell Field

Feb 24

MSO4:20 pmMissoula Johnson-Bell Field

30h 39m

2 stops

STL11:59 pmLambert-St Louis

$548

Fly from

Fly to

Route

Depart

Return

Price

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

lun. 2/23

6:40 pm-11:30 pm

1 stop5h 50m

Missoula Johnson-Bell Field

lun. 3/2

6:10 pm-12:25 am

1 stop5h 15m

$289

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

mar. 7/21

1:30 pm-10:25 pm

2 stops9h 55m

Missoula Johnson-Bell Field

mar. 7/28

7:15 am-8:59 pm

2 stops12h 44m

$360

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

lun. 2/23

9:55 am-9:57 pm

2 stops13h 02m

Missoula Johnson-Bell Field

lun. 3/2

2:34 pm-8:26 pm

1 stop4h 52m

$362

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

mar. 7/21

6:59 pm-12:24 am

1 stop6h 25m

Missoula Johnson-Bell Field

mar. 7/28

6:10 pm-12:36 am

1 stop5h 26m

$367

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

lun. 5/11

6:59 pm-12:24 am

1 stop6h 25m

Missoula Johnson-Bell Field

lun. 5/18

6:10 pm-12:36 am

1 stop5h 26m

$392

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

mar. 7/21

2:18 pm-12:24 am

2 stops11h 06m

Missoula Johnson-Bell Field

mar. 7/28

6:10 pm-12:36 am

1 stop5h 26m

$427

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

lun. 5/11

6:59 pm-12:24 am

1 stop6h 25m

Missoula Johnson-Bell Field

lun. 5/18

6:10 pm-8:07 am

2 stops12h 57m

$474

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

jue. 7/16

6:20 pm-3:23 pm

2 stops22h 03m

Missoula Johnson-Bell Field

vie. 7/24

6:36 pm-2:02 pm

1 stop18h 26m

$518

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

jue. 7/16

7:30 pm-3:23 pm

1 stop20h 53m

Missoula Johnson-Bell Field

vie. 7/24

6:36 pm-2:02 pm

1 stop18h 26m

$525

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

lun. 2/23

2:19 pm-11:59 pm

2 stops10h 40m

Missoula Johnson-Bell Field

lun. 3/2

4:20 pm-11:59 pm

2 stops30h 39m

$558

Flights are sorted by cheapest round-trip flights first.

Sorted 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 October is also very affordable. Most momondo users find prices during this month for around $374.

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 50m
Direct flights	None

The fastest flight from St. Louis to Missoula takes 5h 50m

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 50m 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 3 operators available for flights from Lambert-St Louis Airport to Missoula Johnson-Bell Field Airport as of January 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 Delta, making up 44% of the total bookings. Other popular airlines include United Airlines with 30% and American Airlines with 27%.

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
American Airlines	PriceFrom $270	Free Cancellation	Rating 7.2 11,197 reviews	Search American Airlines flights
Delta	PriceFrom $288	Free Cancellation	Rating 7.9 8,119 reviews	Search Delta flights
United Airlines	PriceFrom $371	Free Cancellation	Rating 7.4 9,205 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.