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.

$422 Cheap Flights from St. Louis to West Yellowstone in 2026

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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.

7:30 am - 12:21 pm

STL

WYS

5h 51m

1 stop

1:09 pm - 11:01 pm

WYS

STL

8h 52m

2 stops

$444Delta

Tue, Aug 25 - Fri, Sep 4

4:40 pm - 4:07 pm

STL

WYS

24h 27m

1 stop

2:02 pm - 8:39 pm

WYS

STL

5h 37m

1 stop

$610United Airlines

Sat, Aug 22 - Wed, Aug 26

5:32 pm - 4:07 pm

STL

WYS

23h 35m

2 stops

2:02 pm - 8:39 pm

WYS

STL

5h 37m

1 stop

$620United Airlines

Sat, Aug 22 - Wed, Aug 26

5:10 am - 4:37 pm

STL

WYS

12h 27m

1 stop

5:45 pm - 11:57 pm

WYS

STL

5h 12m

1 stop

$626United Airlines

Sat, May 23 - Sun, May 31

6:00 am - 1:32 pm

STL

WYS

32h 32m

2 stops

5:45 pm - 9:16 pm

WYS

STL

26h 31m

2 stops

$627United Airlines

Sat, May 23 - Sun, May 31

1:18 pm - 1:20 pm

STL

WYS

25h 02m

3 stops

2:02 pm - 8:39 pm

WYS

STL

5h 37m

1 stop

$651United Airlines

Sat, Aug 22 - Wed, Aug 26

5:10 am - 4:37 pm

STL

WYS

12h 27m

1 stop

5:45 pm - 9:16 pm

WYS

STL

26h 31m

2 stops

$659United Airlines

Sat, May 23 - Sun, May 31

9:23 am - 1:32 pm

STL

WYS

29h 09m

2 stops

5:45 pm - 11:57 pm

WYS

STL

5h 12m

1 stop

$666United Airlines

Sat, May 23 - Sun, May 31

4:48 pm - 4:37 pm

STL

WYS

24h 49m

1 stop

2:19 pm - 4:33 pm

WYS

STL

25h 14m

1 stop

$669United Airlines

Fri, Jun 5 - Tue, Jun 9

4:48 pm - 4:37 pm

STL

WYS

24h 49m

1 stop

2:19 pm - 3:46 pm

WYS

STL

24h 27m

2 stops

$670United Airlines

Fri, Jun 5 - Tue, Jun 9

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 22

STL4:40 pmLambert-St Louis

24h 27m

1 stop

WYS4:07 pmWest Yellowstone

Aug 26

WYS2:02 pmWest Yellowstone

5h 37m

1 stop

STL8:39 pmLambert-St Louis

$610

United Airlines

Aug 22

STL5:32 pmLambert-St Louis

23h 35m

2 stops

WYS4:07 pmWest Yellowstone

Aug 26

WYS2:02 pmWest Yellowstone

5h 37m

1 stop

STL8:39 pmLambert-St Louis

$620

United Airlines

May 23

STL5:10 amLambert-St Louis

12h 27m

1 stop

WYS4:37 pmWest Yellowstone

May 31

WYS5:45 pmWest Yellowstone

5h 12m

1 stop

STL11:57 pmLambert-St Louis

$626

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

Tue 8/25

7:30 am-12:21 pm

1 stop5h 51m

West Yellowstone

Fri 9/4

1:09 pm-11:01 pm

2 stops8h 52m

$444

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Sat 8/22

4:40 pm-4:07 pm

1 stop24h 27m

West Yellowstone

Wed 8/26

2:02 pm-8:39 pm

1 stop5h 37m

$610

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Sat 8/22

5:32 pm-4:07 pm

2 stops23h 35m

West Yellowstone

Wed 8/26

2:02 pm-8:39 pm

1 stop5h 37m

$620

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Sat 5/23

5:10 am-4:37 pm

1 stop12h 27m

West Yellowstone

Sun 5/31

5:45 pm-11:57 pm

1 stop5h 12m

$626

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Sat 5/23

6:00 am-1:32 pm

2 stops32h 32m

West Yellowstone

Sun 5/31

5:45 pm-9:16 pm

2 stops26h 31m

$627

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Sat 8/22

1:18 pm-1:20 pm

3 stops25h 02m

West Yellowstone

Wed 8/26

2:02 pm-8:39 pm

1 stop5h 37m

$651

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Sat 5/23

5:10 am-4:37 pm

1 stop12h 27m

West Yellowstone

Sun 5/31

5:45 pm-9:16 pm

2 stops26h 31m

$659

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Sat 5/23

9:23 am-1:32 pm

2 stops29h 09m

West Yellowstone

Sun 5/31

5:45 pm-11:57 pm

1 stop5h 12m

$666

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Fri 6/5

4:48 pm-4:37 pm

1 stop24h 49m

West Yellowstone

Tue 6/9

2:19 pm-4:33 pm

1 stop25h 14m

$669

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Fri 6/5

4:48 pm-4:37 pm

1 stop24h 49m

West Yellowstone

Tue 6/9

2:19 pm-3:46 pm

2 stops24h 27m

$670

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 43% of people opting to fly with this airline when traveling to West Yellowstone. Keep in mind that there are 5 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 26m
Direct flights	None

The fastest flight from St. Louis to West Yellowstone takes 5h 26m

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

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 26m 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.