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West Yellowstone

$649+ Cheap flights from St. Louis to West Yellowstone (STL - WYS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/23. Fares are subject to change and may not be available on all flights or dates of travel.
STL — WYS
Mar 21 — Mar 281
Sat 3/21
Sat 3/28
1 adult, Economy
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Cheap flight deals from St. Louis to West Yellowstone

Cheapest flights from St. Louis to West Yellowstone
Explore the most affordable flight options available from St. Louis to West Yellowstone. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 19, 2026.

This United Airlines deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/239:06 am
STL
-
WYS
1 stop8h 31m
United Airlines
Sun 5/315:45 pm
WYS
-
STL
1 stop25h 58m
United Airlines
Deal found 2/17$649
This United Airlines deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/199:13 am
STL
-
WYS
1 stop5h 07m
United Airlines
Sat 8/225:45 pm
WYS
-
STL
1 stop4h 58m
United Airlines
Deal found 2/18$703
This United Airlines deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/221:38 pm
STL
-
WYS
1 stop24h 42m
United Airlines
Wed 7/292:02 pm
WYS
-
STL
1 stop5h 40m
United Airlines
Deal found 2/18$722

Find flight deals from St. Louis to West Yellowstone

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to West Yellowstone (WYS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$649
(United Airlines)
Provider with most accurate pricing for Lambert-St Louis-West Yellowstone flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-West Yellowstone flights.
Search Deals
From Lambert-St Louis to West Yellowstone
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated February 19, 2026.
Use the filters below to find and compare flights from St. Louis to West Yellowstone that are best for you.

Fly from

St. Louis

Fly to

West Yellowstone

Route

Depart

Return

Price

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Sat 5/23

9:06 am-4:37 pm

1 stop8h 31m

West Yellowstone

Sun 5/31

5:45 pm-8:43 pm

1 stop25h 58m

$649

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Wed 7/22

1:38 pm-1:20 pm

1 stop24h 42m

West Yellowstone

Wed 7/29

2:02 pm-8:42 pm

1 stop5h 40m

$722

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/17

Compare providers for flights from St. Louis to West Yellowstone

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to West Yellowstone in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-West Yellowstone flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-West Yellowstone flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-West Yellowstone flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-West Yellowstone flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-West Yellowstone flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to West Yellowstone

Have a flexible travel schedule? Discover the best time to fly to West Yellowstone from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to West Yellowstone

What is the cheapest month to book a flight from St. Louis to West Yellowstone?

Currently, January is the cheapest month in which you can book a flight from St. Louis to West Yellowstone (average of $191). Flying from St. Louis to West Yellowstone in December is currently the most expensive (average of $306). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to West Yellowstone. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from St. Louis to West Yellowstone?

    For as low as $649, United Airlines can have you in West Yellowstone from St. Louis in 8h 31m. The distance between St. Louis and West Yellowstone is about 1141 mi.

  • Can I find deals for flights from St. Louis to West Yellowstone that include hotel bookings?

    Yes. In addition to deals on St. Louis to West Yellowstone flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to West Yellowstone?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to West Yellowstone.

  • Can I find deals for business class flights from St. Louis to West Yellowstone?

    Yes. Cheapflights offers flight deals from St. Louis to West Yellowstone by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to West Yellowstone?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to West Yellowstone (average of $191). Flying from St. Louis to West Yellowstone in December is currently the most expensive (average of $306). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near West Yellowstone?

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

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