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Cheap flights from St. Louis to West Yellowstone from $391

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to West Yellowstone departing on 8/31. 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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0 bags

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Find the cheapest flights from St. Louis to West Yellowstone

Cheap round-trip flights

United Airlines Logo
9:00 am - 1:15 pmSTL-WYS
5h 15m1 stop
United Airlines Logo
1:51 pm - 8:46 pmWYS-STL
5h 55m1 stop
$391United Airlines
Find Deal
Sun, Aug 31 - Thu, Sep 4
United Airlines Logo
6:35 am - 1:15 pmSTL-WYS
7h 40m2 stops
United Airlines Logo
1:51 pm - 8:46 pmWYS-STL
5h 55m1 stop
$483United Airlines
Find Deal
Sun, Aug 31 - Thu, Sep 4
Delta Logo
7:35 am - 2:50 pmSTL-WYS
8h 15m1 stop
Delta Logo
3:27 pm - 9:21 pmWYS-STL
4h 54m1 stop
$492Delta
Find Deal
Tue, Sep 9 - Sat, Sep 13
Delta Logo
7:35 am - 2:50 pmSTL-WYS
8h 15m1 stop
Delta Logo
3:27 pm - 11:09 pmWYS-STL
6h 42m2 stops
$502Delta
Find Deal
Tue, Sep 9 - Sat, Sep 13
Delta Logo
6:00 am - 2:50 pmSTL-WYS
9h 50m2 stops
Delta Logo
3:27 pm - 11:09 pmWYS-STL
6h 42m2 stops
$507Delta
Find Deal
Tue, Sep 9 - Sat, Sep 13
United Airlines Logo
5:30 pm - 1:15 pmSTL-WYS
20h 45m3 stops
United Airlines Logo
1:51 pm - 8:46 pmWYS-STL
5h 55m1 stop
$625United Airlines
Find Deal
Sun, Aug 31 - Thu, Sep 4
United Airlines Logo
5:15 am - 9:34 amSTL-WYS
5h 19m1 stop
United Airlines Logo
1:51 pm - 11:44 pmWYS-STL
32h 53m2 stops
$946United Airlines
Find Deal
Fri, Aug 29 - Mon, Sep 1
United Airlines Logo
5:15 am - 9:34 amSTL-WYS
5h 19m1 stop
United Airlines Logo
1:51 pm - 4:33 pmWYS-STL
25h 42m1 stop
$995United Airlines
Find Deal
Fri, Aug 29 - Mon, Sep 1
United Airlines Logo
5:49 pm - 1:15 pmSTL-WYS
20h 26m3 stops
United Airlines Logo
10:15 am - 2:19 pmWYS-STL
27h 04m2 stops
$1,177United Airlines
Find Deal
Tue, Sep 9 - Sat, Sep 13
United Airlines Logo
5:30 pm - 9:37 amSTL-WYS
17h 07m2 stops
United Airlines Logo
1:51 pm - 6:58 pmWYS-STL
28h 07m2 stops
$2,138United Airlines
Find Deal
Fri, Aug 29 - Mon, Sep 1

United Airlines flights from St. Louis to West Yellowstone

Our best United Airlines deals on St. Louis to West Yellowstone flight tickets
United Airlines
Aug 31
STL9:00 amLambert-St Louis
5h 15m
1 stop
WYS1:15 pmWest Yellowstone
Sep 4
WYS1:51 pmWest Yellowstone
5h 55m
1 stop
STL8:46 pmLambert-St Louis
$391
Find similar
United Airlines
Aug 31
STL6:35 amLambert-St Louis
7h 40m
2 stops
WYS1:15 pmWest Yellowstone
Sep 4
WYS1:51 pmWest Yellowstone
5h 55m
1 stop
STL8:46 pmLambert-St Louis
$483
Find similar
United Airlines
Aug 24
STL9:00 amLambert-St Louis
5h 15m
1 stop
WYS1:15 pmWest Yellowstone
Aug 28
WYS1:51 pmWest Yellowstone
5h 55m
1 stop
STL8:46 pmLambert-St Louis
$590
Find similar

Delta flights from St. Louis to West Yellowstone

Our best Delta deals on St. Louis to West Yellowstone flight tickets
Delta
Sep 9
STL7:35 amLambert-St Louis
8h 15m
1 stop
WYS2:50 pmWest Yellowstone
Sep 13
WYS3:27 pmWest Yellowstone
4h 54m
1 stop
STL9:21 pmLambert-St Louis
$492
Find similar
Delta
Sep 9
STL7:35 amLambert-St Louis
8h 15m
1 stop
WYS2:50 pmWest Yellowstone
Sep 13
WYS3:27 pmWest Yellowstone
6h 42m
2 stops
STL11:09 pmLambert-St Louis
$502
Find similar
Delta
Sep 9
STL6:00 amLambert-St Louis
9h 50m
2 stops
WYS2:50 pmWest Yellowstone
Sep 13
WYS3:27 pmWest Yellowstone
6h 42m
2 stops
STL11:09 pmLambert-St Louis
$507
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to West Yellowstone 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 August 17, 2025.
Use the filters below to find and compare flights from St. Louis to West Yellowstone that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Sun 8/31

9:00 am-1:15 pm

1 stop5h 15m

West Yellowstone

Thu 9/4

1:51 pm-8:46 pm

1 stop5h 55m

$391

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Sun 8/31

6:35 am-1:15 pm

2 stops7h 40m

West Yellowstone

Thu 9/4

1:51 pm-8:46 pm

1 stop5h 55m

$483

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Tue 9/9

7:35 am-2:50 pm

1 stop8h 15m

West Yellowstone

Sat 9/13

3:27 pm-9:21 pm

1 stop4h 54m

$492

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Tue 9/9

7:35 am-2:50 pm

1 stop8h 15m

West Yellowstone

Sat 9/13

3:27 pm-11:09 pm

2 stops6h 42m

$502

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Tue 9/9

6:00 am-2:50 pm

2 stops9h 50m

West Yellowstone

Sat 9/13

3:27 pm-11:09 pm

2 stops6h 42m

$507

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Sun 8/31

5:30 pm-1:15 pm

3 stops20h 45m

West Yellowstone

Thu 9/4

1:51 pm-8:46 pm

1 stop5h 55m

$625

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Fri 8/29

5:15 am-9:34 am

1 stop5h 19m

West Yellowstone

Mon 9/1

1:51 pm-11:44 pm

2 stops32h 53m

$946

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Fri 8/29

5:15 am-9:34 am

1 stop5h 19m

West Yellowstone

Mon 9/1

1:51 pm-4:33 pm

1 stop25h 42m

$995

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Tue 9/9

5:49 pm-1:15 pm

3 stops20h 26m

West Yellowstone

Sat 9/13

10:15 am-2:19 pm

2 stops27h 04m

$1,177

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Fri 8/29

5:30 pm-9:37 am

2 stops17h 07m

West Yellowstone

Mon 9/1

1:51 pm-6:58 pm

2 stops28h 07m

$2,138

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
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See travel insights to West Yellowstone from

How to get the cheapest flight ticket from St. Louis to West Yellowstone

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 day to depart on your flight to West Yellowstone?

The cheapest day to depart from St. Louis to West Yellowstone is on a Friday when prices can be found for as low as $501. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from St. Louis to West Yellowstone for around $783.

When to book flights from St. Louis to West Yellowstone

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

Cheap St. Louis to West Yellowstone (STL to WYS) flight deals and tips

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

Best Price Found

$392

Fastest flight time

5h 15m

Direct flights

None

Airports in West Yellowstone

1 airport
The best one-way flight to West Yellowstone from St. Louis in the past 72 hours is $392. The best round-trip flight deal from St. Louis to West Yellowstone found on momondo in the last 72 hours is $391.
The fastest flight from St. Louis to West Yellowstone takes 5h 15m
There are no direct flights from St. Louis to West Yellowstone. Popular non-direct route for this connection is Lambert-St Louis Airport - West Yellowstone Airport.
There is 1 airport near West Yellowstone: West Yellowstone (WYS)
Search flight deals

  • How far is Lambert-St Louis to West Yellowstone by plane?

    The distance between Lambert-St Louis and West Yellowstone is about 1152.3 mi. 5h 15m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to West Yellowstone Airport?

    Prices for flights from Lambert-St Louis Airport to West Yellowstone Airport were last updated today.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to West Yellowstone Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to West Yellowstone Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to West Yellowstone Airport.

  • What documentation or ID do you need to fly to West Yellowstone Airport?

    The travel and health documents required for your trip to West Yellowstone Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at West Yellowstone Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

Best airlines flying from St. Louis to West Yellowstone

Compare and see reviews for airlines that fly from St. Louis to West Yellowstone with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $440Free CancellationRating
7.4
8,919 reviews
Search United Airlines flights

Traveling to a place near West Yellowstone?

Book flights to West Yellowstone if you plan to visit one of these locations
Yellowstone National Park
Island Park
Gardiner

Why use momondo?

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

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

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

Yes. momondo allows you to filter the results for St. Louis to West Yellowstone flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between St. Louis and West Yellowstone 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 West Yellowstone right now. Can momondo alert me if prices change?

Price alerts on flights to West Yellowstone from St. Louis 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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