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West Yellowstone

$331+ Cheap flights from St. Louis to West Yellowstone (STL - WYS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/10. Fares are subject to change and may not be available on all flights or dates of travel.
STL — WYS
Nov 5 — Nov 121
Wed 11/5
Wed 11/12
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 October 6, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars
Provider with most accurate pricing for Lambert-St Louis-West Yellowstone flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-West Yellowstone flights.
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Find flight deals from St. Louis to West Yellowstone

One-way flights from St. Louis to West Yellowstone
Search for one-way flight options from St. Louis to West Yellowstone. Find affordable one-way fares based on user searches. Data last updated October 6, 2025.

This United Airlines deal was found by Cheapflights users on 10/6. 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.
Fri 10/109:00 amSTL - WYS
1 stop5h 20mUnited Airlines
Deal found 10/6$331

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 October 6, 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

Fri 10/10

9:00 am-1:20 pm

1 stop5h 20m

$331

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/4

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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice 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, May is the cheapest month in which you can book a flight from St. Louis to West Yellowstone (average of $199). Flying from St. Louis to West Yellowstone in February is currently the most expensive (average of $317). 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.

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 October 6, 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
8,957 reviews

Crew

8.1

Boarding

7.7

Overall

7.4

Food

6.6

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
United Airlines
7.4
Good
8,957 reviews
United Airlines
7.4
Good
8,957 reviews

Crew

8.1

Boarding

7.7

Overall

7.4

Food

6.6

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.

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.

  • 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.

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

    Currently, May is the cheapest month in which you can book a flight from St. Louis to West Yellowstone (average of $199). Flying from St. Louis to West Yellowstone in February is currently the most expensive (average of $317). 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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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 October 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$440Average$725FlexibilityNo cancel feeOn-time69%

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