$201 Cheap Flights from Yakima (YKM) to St. Louis (STL)

View $201 flight on Mon, Feb 9, 2026Opens in a new window

Popular airlines from Yakima, WA (YKM-Yakima Air Terminal - McAllister Field) to St. Louis Lambert Intl. Airport (STL)

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Cheap Flights from Yakima to St. Louis (YKM-STL)

Prices were available within the past 7 days and start at $201 for one-way flights and $342 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hawaiian Airlines
Sat, Mar 7 - Wed, Mar 18
YKM
Yakima
STL
St. Louis
$342 Roundtrip, found 5 days ago
$342
Roundtrip
found 5 days ago
Select Hawaiian Airlines flight, departing Sat, Mar 7 from Yakima to St. Louis, returning Wed, Mar 18, priced at $342 found 5 days ago
Hawaiian Airlines
Sun, Mar 1 - Wed, Mar 18
YKM
Yakima
STL
St. Louis
$352 Roundtrip, found 5 days ago
$352
Roundtrip
found 5 days ago
Select Hawaiian Airlines flight, departing Sun, Mar 1 from Yakima to St. Louis, returning Wed, Mar 18, priced at $352 found 5 days ago
Hawaiian Airlines
Sun, Mar 1 - Thu, Mar 19
YKM
Yakima
STL
St. Louis
$362 Roundtrip, found 5 days ago
$362
Roundtrip
found 5 days ago
Select Hawaiian Airlines flight, departing Sun, Mar 1 from Yakima to St. Louis, returning Thu, Mar 19, priced at $362 found 5 days ago
Hawaiian Airlines
Thu, Jan 22 - Sat, Feb 7
YKM
Yakima
STL
St. Louis
$363 Roundtrip, found 5 days ago
$363
Roundtrip
found 5 days ago
Select Hawaiian Airlines flight, departing Thu, Jan 22 from Yakima to St. Louis, returning Sat, Feb 7, priced at $363 found 5 days ago
Hawaiian Airlines
Sun, Feb 8 - Mon, Feb 23
YKM
Yakima
STL
St. Louis
$372 Roundtrip, found 5 days ago
$372
Roundtrip
found 5 days ago
Select Hawaiian Airlines flight, departing Sun, Feb 8 from Yakima to St. Louis, returning Mon, Feb 23, priced at $372 found 5 days ago
Hawaiian Airlines
Sun, Feb 1 - Wed, Feb 18
YKM
Yakima
STL
St. Louis
$373 Roundtrip, found 5 days ago
$373
Roundtrip
found 5 days ago
Select Hawaiian Airlines flight, departing Sun, Feb 1 from Yakima to St. Louis, returning Wed, Feb 18, priced at $373 found 5 days ago
Hawaiian Airlines
Sat, Feb 21 - Sat, Mar 7
YKM
Yakima
STL
St. Louis
$378 Roundtrip, found 5 days ago
$378
Roundtrip
found 5 days ago
Select Hawaiian Airlines flight, departing Sat, Feb 21 from Yakima to St. Louis, returning Sat, Mar 7, priced at $378 found 5 days ago
Hawaiian Airlines
Sat, Mar 14 - Mon, Mar 23
YKM
Yakima
STL
St. Louis
$379 Roundtrip, found 5 days ago
$379
Roundtrip
found 5 days ago
Select Hawaiian Airlines flight, departing Sat, Mar 14 from Yakima to St. Louis, returning Mon, Mar 23, priced at $379 found 5 days ago
Alaska Airlines
Thu, May 14 - Sat, May 30
YKM
Yakima
STL
St. Louis
$416 Roundtrip, found 5 days ago
$416
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Thu, May 14 from Yakima to St. Louis, returning Sat, May 30, priced at $416 found 5 days ago
American Airlines
Sat, May 16 - Sat, May 23
YKM
Yakima
STL
St. Louis
$672 Roundtrip, found 6 days ago
$672
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sat, May 16 from Yakima to St. Louis, returning Sat, May 23, priced at $672 found 6 days ago

Alternative airports near St. Louis

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $469
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $469

Frequently asked questions

How much does a flight from Yakima Air Terminal - McAllister Field Airport (YKM) to Lambert-St. Louis Intl. Airport (STL) cost?
Snag a cheap one-way flight from $201 or cheap return flight from $342 from Yakima Air Terminal - McAllister Field Airport (YKM) to Lambert-St. Louis Intl. Airport (STL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Yakima Air Terminal - McAllister Field Airport (YKM) to Lambert-St. Louis Intl. Airport (STL)?
The cheapest month to fly from YKM to STL is March, when demand is low. Off-peak season is often when you'll find lower airfares between these airports.
What is the cheapest airline that flies from Yakima Air Terminal - McAllister Field Airport (YKM) to Lambert-St. Louis Intl. Airport (STL)?
To find the cheapest airline flying from YKM to STL, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Yakima Air Terminal - McAllister Field Airport (YKM) to Lambert-St. Louis Intl. Airport (STL)?
You'll have to catch a flight with a layover when traveling from Yakima Air Terminal - McAllister Field Airport (YKM) to Lambert-St. Louis Intl. Airport (STL). Direct flights don't operate daily on this route. However, just filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from YKM to STL?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Yakima Air Terminal - McAllister Field Airport (YKM) to Lambert-St. Louis Intl. Airport (STL)?
To avoid possible delays on the Yakima Air Terminal - McAllister Field Airport (YKM) to Lambert-St. Louis Intl. Airport (STL) route, aim to fly before 3 PM. Later departures are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Yakima Air Terminal - McAllister Field Airport (YKM) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Booking your plane ticket from YKM to STL just before your journey is generally more expensive. However, if there's some wiggle room with your schedule, you could score a cheap last-minute fare.
Is it cheaper to book a YKM to STL flight and hotel package?
Compared with arranging flights and hotels separately, booking a YKM to STL flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one easy place takes the hassle out of planning your trip. Just pick your flights and select from our wide range of hotels, then personalize your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Yakima Air Terminal - McAllister Field Airport (YKM) to Lambert-St. Louis Intl. Airport (STL)?
If you booked your YKM to STL flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the fare type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more information.

Travel information

Origin airport
Yakima Air Terminal - McAllister Field
Destination airport
Lambert-St. Louis Intl.
Roundtrip price
$342
Distance
1613 mi

Book with confidence

Yakima to St. Louis Flights

The cheapest times to fly from Yakima to St. Louis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Yakima to St. Louis are during the month of March. You can find some of the cheapest flights from Yakima to St. Louis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Yakima to St. Louis

Sunday is one of the best days to book for cheap flights from Yakima to St. Louis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Yakima to St. Louis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Yakima to St. Louis in 2026. You can also book with separate airlines for your outbound and return journeys, from $201 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Yakima to St. Louis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Yakima to St. Louis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Yakima to St. Louis Flights

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