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

Know your dates, get live prices in seconds:

From
To
Depart
Return
Any month
Compare vs. Cheapflights |
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime

We work with more than 300 partners to bring you better travel deals

How to find the cheapest flight from
St. Louis (STL) to West Yellowstone (WYS)

All the information you need to plan the best STL to WYS flight in 2022: compare St. Louis to West Yellowstone flight prices with the expected peak season, weather and rainfall in West Yellowstone.
What is the cheapest day to fly round-trip from St. Louis to West Yellowstone?

Flights from St. Louis to West Yellowstone are found to be more expensive on Friday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to West Yellowstone.

When is the cheapest time to fly from St. Louis to West Yellowstone (STL - WYS)?

When flying from St. Louis to West Yellowstone, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Lambert-St Louis to West Yellowstone 2022 flight deals

Cheap flights to West Yellowstone from St. Louis found for this year
12 Sep - 17 Sep
$553pp
STL
Lambert-St Louis
Delta
   
2 STOPS
WYS
West Yellowstone
WYS
West Yellowstone
Delta
 
1 STOP
STL
Lambert-St Louis
23 Jul - 30 Jul
$603pp
STL
Lambert-St Louis
Delta
   
2 STOPS
WYS
West Yellowstone
WYS
West Yellowstone
Delta
 
1 STOP
STL
Lambert-St Louis
23 Jul - 30 Jul
$623pp
STL
Lambert-St Louis
Delta
   
2 STOPS
WYS
West Yellowstone
WYS
West Yellowstone
Delta
 
1 STOP
STL
Lambert-St Louis

Related info for your journey

Useful info, stats and facts about <span class="emphasized">St. Louis</span> to <span class="emphasized">West Yellowstone</span> flights.

Flight FAQs

From St. Louis to West Yellowstone

Which airlines flying from Lambert-St Louis to West Yellowstone have flexible changes due to COVID-19?

Some of our airline partners flying from Lambert-St Louis to West Yellowstone have new flexible policies in place due to COVID-19. Delta is one of the carriers where you may find flexible change policies. You can use our site to filter for airlines like Delta with this kind of flexibility.

What are the cheapest flights from St. Louis to West Yellowstone?

While on average a flight from St. Louis to West Yellowstone is generally $397, our data shows the cheapest flight currently is $273. When looking at the most popular route, (Lambert-St Louis - West Yellowstone), you can expect to pay $598 for that flight.

COVID Restrictions

View COVID Travel Restrictions for West Yellowstone, MT

Do I need a COVID test to fly to West Yellowstone from St. Louis?

Information is based on travel restrictions for travel to West Yellowstone within the United States

Most visitors from Lambert-St Louis need to provide a negative COVID-19 test result and/or quarantine to enter West Yellowstone.

COVID-19 testing requirements
Visitors from Lambert-St Louis must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 24 hours before departing to West Yellowstone.

Quarantine requirements
Visitors from Lambert-St Louis are not required to quarantine after entering West Yellowstone.

Do I need a test to fly back to St. Louis from West Yellowstone?

Returning to Lambert-St Louis from West Yellowstone

COVID-19 testing requirements
Visitors from West Yellowstone must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 24 hours before departing to Lambert-St Louis.

Quarantine requirements
Visitors from West Yellowstone are not required to quarantine after entering Lambert-St Louis.

Hide COVID Travel Restrictions for West Yellowstone, MT

Alternative routes for St. Louis to West Yellowstone

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for West Yellowstone

Things to know before you go - useful duration and weather info for your trip from St. Louis to West Yellowstone.

Airports servicing St. Louis

Airports servicing West Yellowstone

Home North America USA Montana West Yellowstone Cheap flights from St. Louis to West Yellowstone