HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
St. Louis

$443+ Cheap flights from Walla Walla to St. Louis (ALW - STL)

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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
ALW — STL
Mar 15 — Mar 221
Sun 3/15
Sun 3/22
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Walla Walla to St. Louis with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Walla Walla to St. Louis

Cheapest flights from Walla Walla to St. Louis
Explore the most affordable flight options available from Walla Walla to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 13, 2026.

This Alaska Airlines deal was found by Cheapflights users on 2/12. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/94:26 pm
ALW
-
STL
1 stop19h 25m
Alaska Airlines
Thu 3/197:00 am
STL
-
ALW
1 stop9h 57m
Alaska Airlines
Deal found 2/12$443
This Alaska Airlines deal was found by Cheapflights users on 2/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/35:00 am
ALW
-
STL
1 stop8h 50m
Alaska Airlines
Tue 6/307:30 pm
STL
-
ALW
1 stop6h 47m
Alaska Airlines
Deal found 2/11$458
This Alaska Airlines deal was found by Cheapflights users on 2/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/254:26 pm
ALW
-
STL
1 stop19h 25m
Alaska Airlines
Sat 2/282:47 pm
STL
-
ALW
1 stop11h 11m
Alaska Airlines
Deal found 2/9$563
This Expedia deal was found by Cheapflights users on 2/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/144:26 pm
ALW
-
STL
1 stop19h 57m
Alaska Airlines
Sat 3/215:30 pm
STL
-
ALW
1 stop23h 27m
Alaska Airlines
Deal found 2/12$591
This Alaska Airlines deal was found by Cheapflights users on 2/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/265:53 am
ALW
-
STL
1 stop5h 58m
Alaska Airlines
Mon 3/22:47 pm
STL
-
ALW
1 stop26h 59m
Alaska Airlines
Deal found 2/11$632

Find flight deals from Walla Walla to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Walla Walla (ALW) to St. Louis (STL). 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 13, 2026.

Round-trip from

$443
(Alaska Airlines)
From Walla Walla to Lambert-St Louis
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Walla Walla to St. Louis 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 13, 2026.
Use the filters below to find and compare flights from Walla Walla to St. Louis that are best for you.

Fly from

Walla Walla

Fly to

St. Louis

Route

Depart

Return

Price

Walla WallaSt. Louis

ALW - STL

ALWSTL

Walla Walla

Mon 3/9

4:26 pm-1:51 pm

1 stop19h 25m

Lambert-St Louis

Thu 3/19

7:00 am-2:57 pm

1 stop9h 57m

$443

Walla WallaSt. Louis

ALW - STL

ALWSTL

Walla Walla

Sun 5/3

5:00 am-3:50 pm

1 stop8h 50m

Lambert-St Louis

Tue 6/30

6:20 pm-12:17 am

2 stops7h 57m

$561

Walla WallaSt. Louis

ALW - STL

ALWSTL

Walla Walla

Wed 2/25

4:26 pm-1:51 pm

1 stop19h 25m

Lambert-St Louis

Sat 2/28

2:47 pm-11:58 pm

1 stop11h 11m

$563

Walla WallaSt. Louis

ALW - STL

ALWSTL

Walla Walla

Sat 3/14

4:26 pm-2:23 pm

1 stop19h 57m

Lambert-St Louis

Sat 3/21

5:30 pm-2:57 pm

1 stop23h 27m

$591

Walla WallaSt. Louis

ALW - STL

ALWSTL

Walla Walla

Thu 2/26

5:53 am-1:51 pm

1 stop5h 58m

Lambert-St Louis

Mon 3/2

2:47 pm-3:46 pm

1 stop26h 59m

$632

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/12

Best time to book a flight from Walla Walla to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Walla Walla 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 Walla Walla to St. Louis

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

Currently, September is the cheapest month in which you can book a flight from Walla Walla to St. Louis (average of $193). Flying from Walla Walla to St. Louis in February is currently the most expensive (average of $743). 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 Walla Walla to St. Louis. 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 Walla Walla to St. Louis?

    Departing from Walla Walla to St. Louis will take you 19h 25m. Airlines will cover a distance of 1501 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Walla Walla to St. Louis 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 Walla Walla to St. Louis?

    Currently, September is the cheapest month in which you can book a flight from Walla Walla to St. Louis (average of $193). Flying from Walla Walla to St. Louis in February is currently the most expensive (average of $743). 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 St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.