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 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.

$304 Cheap Flights from St. Louis to West Yellowstone in 2026

Find the cheapest flights from St. Louis to West Yellowstone

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:00 am - 12:27 pm

STL

WYS

5h 27m

1 stop

1:09 pm - 6:55 pm

WYS

STL

4h 46m

1 stop

$304Delta

Thu, Aug 20 - Fri, Aug 28

8:00 am - 12:27 pm

STL

WYS

5h 27m

1 stop

1:09 pm - 6:55 pm

WYS

STL

4h 46m

1 stop

$329Delta

Thu, Aug 20 - Fri, Aug 28

8:00 am - 12:27 pm

STL

WYS

5h 27m

1 stop

1:09 pm - 11:58 pm

WYS

STL

9h 49m

2 stops

$434Delta

Thu, Aug 20 - Fri, Aug 28

8:00 am - 12:27 pm

STL

WYS

5h 27m

1 stop

1:09 pm - 11:58 pm

WYS

STL

9h 49m

2 stops

$459Delta

Thu, Aug 20 - Fri, Aug 28

8:00 am - 12:26 pm

STL

WYS

5h 26m

1 stop

1:10 pm - 9:00 pm

WYS

STL

6h 50m

1 stop

$489Delta

Tue, Jul 7 - Sat, Jul 11

9:00 am - 1:20 pm

STL

WYS

5h 20m

1 stop

4:44 pm - 11:31 pm

WYS

STL

5h 47m

1 stop

$501United Airlines

Sun, Aug 23 - Sun, Aug 30

9:06 am - 1:32 pm

STL

WYS

5h 26m

1 stop

4:44 pm - 11:31 pm

WYS

STL

5h 47m

1 stop

$520United Airlines

Sun, Aug 9 - Sun, Aug 16

9:00 am - 4:06 pm

STL

WYS

8h 06m

1 stop

1:55 pm - 8:38 pm

WYS

STL

5h 43m

1 stop

$555United Airlines

Sat, Sep 5 - Wed, Sep 9

8:00 am - 4:06 pm

STL

WYS

9h 06m

2 stops

1:55 pm - 8:38 pm

WYS

STL

5h 43m

1 stop

$560United Airlines

Sat, Sep 5 - Wed, Sep 9

8:00 am - 4:06 pm

STL

WYS

9h 06m

2 stops

1:55 pm - 10:59 pm

WYS

STL

8h 04m

2 stops

$576United Airlines

Sat, Sep 5 - Wed, Sep 9

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Delta flights from St. Louis to West Yellowstone

Our best Delta deals on St. Louis to West Yellowstone flight tickets

Delta

Aug 20

STL8:00 amLambert-St Louis

5h 27m

1 stop

WYS12:27 pmWest Yellowstone

Aug 28

WYS1:09 pmWest Yellowstone

4h 46m

1 stop

STL6:55 pmLambert-St Louis

$304

Delta

Aug 20

STL8:00 amLambert-St Louis

5h 27m

1 stop

WYS12:27 pmWest Yellowstone

Aug 28

WYS1:09 pmWest Yellowstone

4h 46m

1 stop

STL6:55 pmLambert-St Louis

$329

Delta

Aug 20

STL8:00 amLambert-St Louis

5h 27m

1 stop

WYS12:27 pmWest Yellowstone

Aug 28

WYS1:09 pmWest Yellowstone

9h 49m

2 stops

STL11:58 pmLambert-St Louis

$434

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 23

STL9:00 amLambert-St Louis

5h 20m

1 stop

WYS1:20 pmWest Yellowstone

Aug 30

WYS4:44 pmWest Yellowstone

5h 47m

1 stop

STL11:31 pmLambert-St Louis

$501

United Airlines

Aug 9

STL9:06 amLambert-St Louis

5h 26m

1 stop

WYS1:32 pmWest Yellowstone

Aug 16

WYS4:44 pmWest Yellowstone

5h 47m

1 stop

STL11:31 pmLambert-St Louis

$520

United Airlines

Sep 5

STL9:00 amLambert-St Louis

8h 06m

1 stop

WYS4:06 pmWest Yellowstone

Sep 9

WYS1:55 pmWest Yellowstone

5h 43m

1 stop

STL8:38 pmLambert-St Louis

$555

momondo Fare Finder

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

Cheapest round-trip

Quickest round-trip

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Thu 8/20

8:00 am-12:27 pm

1 stop5h 27m

West Yellowstone

Fri 8/28

1:09 pm-6:55 pm

1 stop4h 46m

$304

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Thu 8/20

8:00 am-12:27 pm

1 stop5h 27m

West Yellowstone

Fri 8/28

1:09 pm-6:55 pm

1 stop4h 46m

$329

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Thu 8/20

8:00 am-12:27 pm

1 stop5h 27m

West Yellowstone

Fri 8/28

1:09 pm-11:58 pm

2 stops9h 49m

$434

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Thu 8/20

8:00 am-12:27 pm

1 stop5h 27m

West Yellowstone

Fri 8/28

1:09 pm-11:58 pm

2 stops9h 49m

$459

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Tue 7/7

8:00 am-12:26 pm

1 stop5h 26m

West Yellowstone

Sat 7/11

1:10 pm-9:00 pm

1 stop6h 50m

$489

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Sun 8/23

9:00 am-1:20 pm

1 stop5h 20m

West Yellowstone

Sun 8/30

4:44 pm-11:31 pm

1 stop5h 47m

$501

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Sun 8/9

9:06 am-1:32 pm

1 stop5h 26m

West Yellowstone

Sun 8/16

4:44 pm-11:31 pm

1 stop5h 47m

$520

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Sat 9/5

9:00 am-4:06 pm

1 stop8h 06m

West Yellowstone

Wed 9/9

1:55 pm-8:38 pm

1 stop5h 43m

$555

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Sat 9/5

8:00 am-4:06 pm

2 stops9h 06m

West Yellowstone

Wed 9/9

1:55 pm-8:38 pm

1 stop5h 43m

$560

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Sat 9/5

8:00 am-4:06 pm

2 stops9h 06m

West Yellowstone

Wed 9/9

1:55 pm-10:59 pm

2 stops8h 04m

$576

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first

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 airline that flies from Lambert-St Louis to West Yellowstone?

United Airlines is the most popular carrier operating from Lambert-St Louis to West Yellowstone

What airlines fly to West Yellowstone?

United Airlines, American Airlines and Delta are the top three most popular airlines that fly to West Yellowstone from St. Louis according to our data. United Airlines is the first choice among our users, with 54% of people opting to fly with this airline when traveling to West Yellowstone. Keep in mind that there are 4 different airlines that fly to West Yellowstone on a routine basis, so you have a few additional options to choose from.

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

Fastest flight time	5h 27m
Direct flights	None

The fastest flight from St. Louis to West Yellowstone takes 5h 27m

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

Search flight deals

Frequently asked questions about flying from St. Louis to West Yellowstone

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 27m 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 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.

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.