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West Yellowstone

$353+ 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 9/2. Fares are subject to change and may not be available on all flights or dates of travel.
STL — WYS
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
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Cheap 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 August 20, 2025.

Round-trip from

$353
(United Airlines)
From Lambert-St Louis to West Yellowstone
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Find 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 August 20, 2025.

This United Airlines deal was found by Cheapflights users on 8/17. 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.
Tue 9/25:15 amSTL - WYS
1 stop5h 19mUnited Airlines
Sat 9/610:15 amWYS - STL
1 stop5h 18mUnited Airlines
Deal found 8/17$353
This United Airlines deal was found by Cheapflights users on 8/20. 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 9/175:15 amSTL - WYS
1 stop9h 00mUnited Airlines
Wed 9/241:51 pmWYS - STL
1 stop5h 55mUnited Airlines
Deal found 8/20$454
This United Airlines deal was found by Cheapflights users on 8/18. 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.
Sun 9/219:00 amSTL - WYS
1 stop5h 15mUnited Airlines
Wed 9/241:51 pmWYS - STL
1 stop9h 02mUnited Airlines
Deal found 8/18$508
This Delta deal was found by Cheapflights users on 8/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/26:00 amSTL - WYS
2 stops9h 50mDelta
Sat 9/63:25 pmWYS - STL
2 stops6h 58mDelta
Deal found 8/17$522
This United Airlines deal was found by Cheapflights users on 8/19. 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.
Tue 9/25:15 amSTL - WYS
1 stop5h 19mUnited Airlines
Fri 9/51:51 pmWYS - STL
1 stop21h 52mUnited Airlines
Deal found 8/19$630

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 August 20, 2025.
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

Tue 9/2

5:15 am-9:34 am

1 stop5h 19m

West Yellowstone

Sat 9/6

10:15 am-4:33 pm

1 stop5h 18m

$353

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Wed 9/17

5:15 am-1:15 pm

1 stop9h 00m

West Yellowstone

Wed 9/24

1:51 pm-8:46 pm

1 stop5h 55m

$454

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Sun 9/21

9:00 am-1:15 pm

1 stop5h 15m

West Yellowstone

Wed 9/24

1:51 pm-11:53 pm

1 stop9h 02m

$508

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Tue 9/2

6:00 am-2:50 pm

2 stops9h 50m

West Yellowstone

Sat 9/6

3:25 pm-11:23 pm

2 stops6h 58m

$522

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Tue 9/2

5:15 am-9:34 am

1 stop5h 19m

West Yellowstone

Fri 9/5

1:51 pm-12:43 pm

1 stop21h 52m

$630

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Fri 10/10

5:15 am-1:20 pm

1 stop9h 05m

$392

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

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.

Reviews of airlines servicing West Yellowstone

Get insights into the airlines that provide service to West Yellowstone. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to West Yellowstone. Reviews last updated August 20, 2025.
See what other customers who have flown with United Airlines from St. Louis to West Yellowstone have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,928 reviews

Overall

7.4

Food

6.6

Boarding

7.7

Crew

8.1

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,928 reviews
United Airlines
7.4
Good
8,928 reviews

Overall

7.4

Food

6.6

Boarding

7.7

Crew

8.1

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

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 $353, United Airlines can have you in West Yellowstone from St. Louis in 5h 19m. The distance between St. Louis and West Yellowstone is about 1141 mi.

  • What is the cheapest airline to fly from St. Louis to West Yellowstone round-trip?

    United Airlines, at $440, was found to be the cheapest airline from St. Louis to West Yellowstone..

  • 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.

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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Top airline flying from St. Louis to West Yellowstone

Discover the top airline that operate flights from St. Louis to West Yellowstone. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$440Average$725FlexibilityNo cancel feeOn-time69%

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