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.

$260 Cheap Flights from St. Louis to West Yellowstone in 2026

Find the cheapest flights from St. Louis to West Yellowstone

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:00 am - 4:06 pmSTL Lambert-St Louis-WYS West Yellowstone

9h 06m2 stops Chicago O'Hare Intl Denver Intl

2:05 pm - 8:36 pmWYS West Yellowstone-STL Lambert-St Louis

5h 31m1 stop Denver Intl

$473United Airlines

Sat, Sep 19 - Fri, Sep 25

9:00 am - 4:06 pmSTL Lambert-St Louis-WYS West Yellowstone

8h 06m1 stop Denver Intl

2:05 pm - 8:36 pmWYS West Yellowstone-STL Lambert-St Louis

5h 31m1 stop Denver Intl

$482United Airlines

Sat, Sep 19 - Fri, Sep 25

8:00 am - 4:06 pmSTL Lambert-St Louis-WYS West Yellowstone

9h 06m2 stops Chicago O'Hare Intl Denver Intl

2:05 pm - 8:36 pmWYS West Yellowstone-STL Lambert-St Louis

5h 31m1 stop Denver Intl

$492United Airlines

Sat, Sep 19 - Fri, Sep 25

5:10 am - 4:06 pmSTL Lambert-St Louis-WYS West Yellowstone

11h 56m1 stop Denver Intl

2:05 pm - 3:43 pmWYS West Yellowstone-STL Lambert-St Louis

24h 38m3 stops Denver Intl Minneapolis St Paul Chicago O'Hare Intl

$564United Airlines

Sat, Sep 19 - Fri, Sep 25

6:53 pm - 1:20 pmSTL Lambert-St Louis-WYS West Yellowstone

19h 27m2 stops Chicago O'Hare Intl Denver Intl

2:05 pm - 3:43 pmWYS West Yellowstone-STL Lambert-St Louis

24h 38m3 stops Denver Intl Minneapolis St Paul Chicago O'Hare Intl

$570United Airlines

Sat, Sep 19 - Fri, Sep 25

5:30 pm - 5:21 pmSTL Lambert-St Louis-WYS West Yellowstone

24h 51m2 stops Chicago O'Hare Intl Denver Intl

2:05 pm - 10:59 pmWYS West Yellowstone-STL Lambert-St Louis

31h 54m2 stops Denver Intl Chicago O'Hare Intl

$584United Airlines

Sat, Sep 19 - Fri, Sep 25

6:53 pm - 1:20 pmSTL Lambert-St Louis-WYS West Yellowstone

19h 27m2 stops Chicago O'Hare Intl Denver Intl

2:05 pm - 3:43 pmWYS West Yellowstone-STL Lambert-St Louis

24h 38m3 stops Denver Intl Minneapolis St Paul Chicago O'Hare Intl

$600United Airlines

Sat, Sep 19 - Fri, Sep 25

4:40 pm - 1:20 pmSTL Lambert-St Louis-WYS West Yellowstone

21h 40m1 stop Denver Intl

2:05 pm - 3:43 pmWYS West Yellowstone-STL Lambert-St Louis

24h 38m3 stops Denver Intl Minneapolis St Paul Chicago O'Hare Intl

$613United Airlines

Mon, Sep 21 - Fri, Sep 25

4:40 pm - 1:20 pmSTL Lambert-St Louis-WYS West Yellowstone

21h 40m1 stop Denver Intl

6:00 pm - 8:00 pmWYS West Yellowstone-STL Lambert-St Louis

25h 00m2 stops Denver Intl Chicago O'Hare Intl

$618United Airlines

Tue, Sep 15 - Fri, Sep 18

9:43 am - 1:20 pmSTL Lambert-St Louis-WYS West Yellowstone

28h 37m2 stops Chicago O'Hare Intl Denver Intl

6:00 pm - 8:00 pmWYS West Yellowstone-STL Lambert-St Louis

25h 00m2 stops Denver Intl Chicago O'Hare Intl

$623United Airlines

Tue, Sep 15 - Fri, Sep 18

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United Airlines flights from St. Louis to West Yellowstone

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

United Airlines

Sep 19

STL8:00 amLambert-St Louis

9h 06m

2 stops

WYS4:06 pmWest Yellowstone

Sep 25

WYS2:05 pmWest Yellowstone

5h 31m

1 stop

STL8:36 pmLambert-St Louis

$473

United Airlines

Sep 19

STL9:00 amLambert-St Louis

8h 06m

1 stop

WYS4:06 pmWest Yellowstone

Sep 25

WYS2:05 pmWest Yellowstone

5h 31m

1 stop

STL8:36 pmLambert-St Louis

$482

United Airlines

Sep 19

STL8:00 amLambert-St Louis

9h 06m

2 stops

WYS4:06 pmWest Yellowstone

Sep 25

WYS2:05 pmWest Yellowstone

5h 31m

1 stop

STL8:36 pmLambert-St Louis

$492

Delta flights from St. Louis to West Yellowstone

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

Delta

Aug 25

STL8:00 amLambert-St Louis

5h 27m

1 stop

WYS12:27 pmWest Yellowstone

Sep 2

WYS1:09 pmWest Yellowstone

6h 51m

1 stop

STL9:00 pmLambert-St Louis

$419

Delta

Sep 1

STL8:00 amLambert-St Louis

5h 27m

1 stop

WYS12:27 pmWest Yellowstone

Sep 2

WYS1:09 pmWest Yellowstone

6h 51m

1 stop

STL9:00 pmLambert-St Louis

$684

Delta

Aug 25

STL8:00 amLambert-St Louis

5h 27m

1 stop

WYS12:27 pmWest Yellowstone

Sep 2

WYS1:09 pmWest Yellowstone

9h 17m

2 stops

STL11:26 pmLambert-St Louis

$734

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

St. LouisWest Yellowstone

STL Lambert-St Louis - WYS West Yellowstone

STLWYS

Lambert-St Louis

Sat 9/19

8:00 am-4:06 pm

2 stops9h 06m

West Yellowstone

Fri 9/25

2:05 pm-8:36 pm

1 stop5h 31m

$473

Quickest round-trip

St. LouisWest Yellowstone

STL Lambert-St Louis - WYS West Yellowstone

STLWYS

Lambert-St Louis

Sat 9/19

9:00 am-4:06 pm

1 stop8h 06m

West Yellowstone

Fri 9/25

2:05 pm-8:36 pm

1 stop5h 31m

$482

St. LouisWest Yellowstone

STL Lambert-St Louis - WYS West Yellowstone

STLWYS

Lambert-St Louis

Sat 9/19

8:00 am-4:06 pm

2 stops9h 06m

West Yellowstone

Fri 9/25

2:05 pm-8:36 pm

1 stop5h 31m

$492

St. LouisWest Yellowstone

STL Lambert-St Louis - WYS West Yellowstone

STLWYS

Lambert-St Louis

Sat 9/19

5:10 am-4:06 pm

1 stop11h 56m

West Yellowstone

Fri 9/25

2:05 pm-3:43 pm

3 stops24h 38m

$564

St. LouisWest Yellowstone

STL Lambert-St Louis - WYS West Yellowstone

STLWYS

Lambert-St Louis

Sat 9/19

6:53 pm-1:20 pm

2 stops19h 27m

West Yellowstone

Fri 9/25

2:05 pm-3:43 pm

3 stops24h 38m

$570

St. LouisWest Yellowstone

STL Lambert-St Louis - WYS West Yellowstone

STLWYS

Lambert-St Louis

Sat 9/19

5:30 pm-5:21 pm

2 stops24h 51m

West Yellowstone

Fri 9/25

2:05 pm-10:59 pm

2 stops31h 54m

$584

St. LouisWest Yellowstone

STL Lambert-St Louis - WYS West Yellowstone

STLWYS

Lambert-St Louis

Sat 9/19

6:53 pm-1:20 pm

2 stops19h 27m

West Yellowstone

Fri 9/25

2:05 pm-3:43 pm

3 stops24h 38m

$600

St. LouisWest Yellowstone

STL Lambert-St Louis - WYS West Yellowstone

STLWYS

Lambert-St Louis

Mon 9/21

4:40 pm-1:20 pm

1 stop21h 40m

West Yellowstone

Fri 9/25

2:05 pm-3:43 pm

3 stops24h 38m

$613

St. LouisWest Yellowstone

STL Lambert-St Louis - WYS West Yellowstone

STLWYS

Lambert-St Louis

Tue 9/15

4:40 pm-1:20 pm

1 stop21h 40m

West Yellowstone

Fri 9/18

6:00 pm-8:00 pm

2 stops25h 00m

$618

St. LouisWest Yellowstone

STL Lambert-St Louis - WYS West Yellowstone

STLWYS

Lambert-St Louis

Tue 9/15

9:43 am-1:20 pm

2 stops28h 37m

West Yellowstone

Fri 9/18

6:00 pm-8:00 pm

2 stops25h 00m

$623

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 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, Delta and American Airlines 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 59% 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

Best Price Found	$260
Fastest flight time	5h 27m
Direct flights	None

The best one-way flight to West Yellowstone from St. Louis in the past 72 hours is $260. The best round-trip flight deal from St. Louis to West Yellowstone found on momondo in the last 72 hours is $473.

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

Gardiner

Island Park

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.