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Cheap flights from Missoula to St. Louis from $130

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Missoula to St. Louis departing on 8/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Missoula to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:27 pm - 12:41 am
MSO
-
STL
5h 14m
1 stop
Delta Logo
5:34 pm - 11:47 pm
STL
-
MSO
7h 13m
1 stop
$349Delta
jue., ago. 20 - dom., ago. 23
Alaska Airlines Logo
3:46 pm - 11:59 pm
MSO
-
STL
7h 13m
1 stop
Alaska Airlines Logo
7:00 am - 3:34 pm
STL
-
MSO
9h 34m
1 stop
$374Alaska Airlines
sáb., oct. 31 - mar., nov. 3
Alaska Airlines Logo
5:41 pm - 4:37 pm
MSO
-
STL
21h 56m
1 stop
Alaska Airlines Logo
3:04 pm - 10:56 pm
STL
-
MSO
8h 52m
1 stop
$390Alaska Airlines
jue., ago. 13 - mar., sep. 1
Alaska Airlines Logo
7:00 am - 3:44 pm
MSO
-
STL
7h 44m
1 stop
Alaska Airlines Logo
7:00 am - 3:34 pm
STL
-
MSO
9h 34m
1 stop
$399Alaska Airlines
sáb., oct. 31 - mar., nov. 3
Delta Logo
6:27 pm - 12:41 am
MSO
-
STL
5h 14m
1 stop
Delta Logo
5:00 pm - 11:12 pm
STL
-
MSO
7h 12m
1 stop
$404Delta
jue., ago. 13 - mar., sep. 1
United Airlines Logo
2:40 pm - 8:46 pm
MSO
-
STL
5h 06m
1 stop
United Airlines Logo
4:40 pm - 9:31 pm
STL
-
MSO
5h 51m
1 stop
$439United Airlines
mié., sep. 2 - sáb., sep. 5
United Airlines Logo
6:33 am - 8:46 pm
MSO
-
STL
13h 13m
2 stops
United Airlines Logo
4:40 pm - 9:31 pm
STL
-
MSO
5h 51m
1 stop
$444United Airlines
jue., ago. 13 - mar., sep. 1
American Airlines Logo
1:29 pm - 8:08 pm
MSO
-
STL
5h 39m
1 stop
American Airlines Logo
6:02 am - 12:39 pm
STL
-
MSO
7h 37m
1 stop
$449American Airlines
vie., oct. 16 - lun., oct. 19
United Airlines Logo
6:33 am - 8:46 pm
MSO
-
STL
13h 13m
2 stops
United Airlines Logo
12:59 pm - 9:31 pm
STL
-
MSO
9h 32m
2 stops
$450United Airlines
jue., ago. 13 - mar., sep. 1
Alaska Airlines Logo
7:00 am - 10:00 pm
MSO
-
STL
14h 00m
2 stops
Alaska Airlines Logo
7:00 am - 3:34 pm
STL
-
MSO
9h 34m
1 stop
$454Alaska Airlines
sáb., oct. 31 - mar., nov. 3

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Delta flights from Missoula to St. Louis

Our best Delta deals on Missoula to St. Louis flight tickets
Delta
Oct 15
MSO6:10 pmMissoula Johnson-Bell Field
5h 26m
1 stop
STL12:36 amLambert-St Louis
Oct 19
STL7:55 pmLambert-St Louis
5h 36m
1 stop
MSO12:31 amMissoula Johnson-Bell Field
$349
Delta
Aug 13
MSO6:27 pmMissoula Johnson-Bell Field
5h 14m
1 stop
STL12:41 amLambert-St Louis
Sep 1
STL5:00 pmLambert-St Louis
7h 12m
1 stop
MSO11:12 pmMissoula Johnson-Bell Field
$404
Delta
Jun 25
MSO6:29 pmMissoula Johnson-Bell Field
5h 14m
1 stop
STL12:43 amLambert-St Louis
Jun 29
STL8:49 amLambert-St Louis
6h 50m
1 stop
MSO2:39 pmMissoula Johnson-Bell Field
$687

Alaska Airlines flights from Missoula to St. Louis

Our best Alaska Airlines deals on Missoula to St. Louis flight tickets
Alaska Airlines
Oct 31
MSO3:46 pmMissoula Johnson-Bell Field
7h 13m
1 stop
STL11:59 pmLambert-St Louis
Nov 3
STL7:00 amLambert-St Louis
9h 34m
1 stop
MSO3:34 pmMissoula Johnson-Bell Field
$374
Alaska Airlines
Oct 31
MSO7:00 amMissoula Johnson-Bell Field
7h 44m
1 stop
STL3:44 pmLambert-St Louis
Nov 3
STL7:00 amLambert-St Louis
9h 34m
1 stop
MSO3:34 pmMissoula Johnson-Bell Field
$399
Alaska Airlines
Oct 31
MSO7:00 amMissoula Johnson-Bell Field
14h 00m
2 stops
STL10:00 pmLambert-St Louis
Nov 3
STL7:00 amLambert-St Louis
9h 34m
1 stop
MSO3:34 pmMissoula Johnson-Bell Field
$454

momondo Fare Finder

 
Customize your flight search to find flights from Missoula to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated junio 16, 2026.
Use the filters below to find and compare flights from Missoula to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MissoulaSt. Louis

MSO - STL

MSOSTL

Missoula Johnson-Bell Field

jue. 8/20

6:27 pm-12:41 am

1 stop5h 14m

Lambert-St Louis

dom. 8/23

5:34 pm-11:47 pm

1 stop7h 13m

$349

MissoulaSt. Louis

MSO - STL

MSOSTL

Missoula Johnson-Bell Field

sáb. 10/31

3:46 pm-11:59 pm

1 stop7h 13m

Lambert-St Louis

mar. 11/3

7:00 am-3:34 pm

1 stop9h 34m

$374

MissoulaSt. Louis

MSO - STL

MSOSTL

Missoula Johnson-Bell Field

jue. 8/13

5:41 pm-4:37 pm

1 stop21h 56m

Lambert-St Louis

mar. 9/1

3:04 pm-10:56 pm

1 stop8h 52m

$390

MissoulaSt. Louis

MSO - STL

MSOSTL

Missoula Johnson-Bell Field

sáb. 10/31

7:00 am-3:44 pm

1 stop7h 44m

Lambert-St Louis

mar. 11/3

7:00 am-3:34 pm

1 stop9h 34m

$399

MissoulaSt. Louis

MSO - STL

MSOSTL

Missoula Johnson-Bell Field

jue. 8/13

6:27 pm-12:41 am

1 stop5h 14m

Lambert-St Louis

mar. 9/1

5:00 pm-11:12 pm

1 stop7h 12m

$404
Quickest round-trip

MissoulaSt. Louis

MSO - STL

MSOSTL

Missoula Johnson-Bell Field

mié. 9/2

2:40 pm-8:46 pm

1 stop5h 06m

Lambert-St Louis

sáb. 9/5

4:40 pm-9:31 pm

1 stop5h 51m

$439

MissoulaSt. Louis

MSO - STL

MSOSTL

Missoula Johnson-Bell Field

jue. 8/13

6:33 am-8:46 pm

2 stops13h 13m

Lambert-St Louis

mar. 9/1

4:40 pm-9:31 pm

1 stop5h 51m

$444

MissoulaSt. Louis

MSO - STL

MSOSTL

Missoula Johnson-Bell Field

vie. 10/16

1:29 pm-8:08 pm

1 stop5h 39m

Lambert-St Louis

lun. 10/19

6:02 am-12:39 pm

1 stop7h 37m

$449

MissoulaSt. Louis

MSO - STL

MSOSTL

Missoula Johnson-Bell Field

jue. 8/13

6:33 am-8:46 pm

2 stops13h 13m

Lambert-St Louis

mar. 9/1

12:59 pm-9:31 pm

2 stops9h 32m

$450

MissoulaSt. Louis

MSO - STL

MSOSTL

Missoula Johnson-Bell Field

sáb. 10/31

7:00 am-10:00 pm

2 stops14h 00m

Lambert-St Louis

mar. 11/3

7:00 am-3:34 pm

1 stop9h 34m

$454

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

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

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

What is the cheapest month to fly to St. Louis?

In general, October is the cheapest month to fly from Missoula to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. The month of April is another great option to travel to St. Louis, with average flight prices from Missoula averaging around $301.

When to book flights from Missoula to St. Louis

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

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

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

Fastest flight time

5h 06m

Direct flights

None
The fastest flight from Missoula to St. Louis takes 5h 06m
There are no direct flights from Missoula to St. Louis. There are no popular flight routes from Missoula to St. Louis.
Search flight deals

Frequently asked questions about flying from Missoula to St. Louis

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

    The straight-line distance from Missoula Johnson-Bell Field to Lambert-St Louis is 1327.0 mi. A reasonable flight in good conditions will take 5h 06m.

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

    Prices for flights from Missoula Johnson-Bell Field Airport to Lambert-St Louis Airport are refreshed on a daily basis.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Missoula Johnson-Bell Field Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from Missoula to St. Louis

Compare and see reviews for airlines that fly from Missoula to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $164Free CancellationRating
7.9
8,404 reviews
Search Delta flights
United AirlinesPriceFrom $274Free CancellationRating
7.4
9,842 reviews
Search United Airlines flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Fairview Heights
Hermann
Maryland Heights
Florissant
O'Fallon
St. Peters
Collinsville
Alton
Wentzville
Clayton
Fenton
Farmington
Festus
Eureka
Litchfield
Edwardsville
Grafton
Shrewsbury

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Missoula to St. Louis. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. All flights to St. Louis from Missoula on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once all potential Missoula to St. Louis flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Price alerts on flights to St. Louis from Missoula are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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