Cheap flights from St. Louis to Seattle

Flights starting at £175. Choose between American Airlines, Alaska Airlines, or Spirit Airlines to find the best price.

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Travelers usually depart from St. Louis Lambert International, or St. Louis Union Station when they travel from St. Louis to Seattle. Book your trip to arrive at Seattle–Tacoma International, Seattle, WA - King Street Station, Seattle, WA - Greyhound Station, Seattle, WA - Ferry Terminal, or Kenmore Air Harbor Seaplane Base. The distance between St. Louis and Seattle is 2747 km. The most popular airlines for this route are American Airlines, Alaska Airlines, Spirit Airlines, Delta Air Lines, and Frontier Airlines. St. Louis and Seattle have 30 direct flights per week.

Weekly direct flights

MondaysTuesdaysWednesdaysThursdaysFridaysSaturdaysSundays
Direct flights4444444
Fly direct with

American Airlines on Mondays, Tuesdays, Wednesdays, Thursdays, Fridays, Saturdays, and Sundays.

Alaska Airlines on Mondays, Tuesdays, Wednesdays, Thursdays, Fridays, Saturdays, and Sundays.

Check-in for a flight from St. Louis to Seattle

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
American AirlinesAALAAYesNo
Alaska AirlinesASAASYesOpens 24 days before flight
Closes 1 hours before flight
Spirit AirlinesNKSNKNoOpens 24 days before flight
Closes 1 hours before flight
Delta Air LinesDALDLYesOpens 24 days before flight
Closes 1 hours before flight
Frontier AirlinesFFTF9NoOpens 24 days before flight
Closes 1 hours before flight

Seattle travel tips

1) What are Chihuly Garden and Glass famous for?

Chihuly Garden and Glass are some of favourite attractions among visitors in Seattle. It’s dedicated to works of innovative glassblower Dale Chihuly, hailed from Tacoma. He created mind-blowing sculptures from glass. Besides eight galleries, visitors can observe one of his biggest works ever influenced by moving sunlight. Come and challenge your imagination!

2) Please, no heels, only comfy shoes are needed in Seattle

Though major tourist attractions in Seattle are within walking distance from each other, the city is quite hilly. Please, leave high heels at home and put on only comfortable flat shoes. In this case, you’ll be able to enjoy a walk fully.

3) What is Seattle Freeze?

The term Seattle Freeze means that locals are polite but not friendly. They aren’t welcoming guests of their city and aren’t eager to have small talk with everyone. They are known to be reserved, cold, and distrustful. Never mind, as any rule has an exception.

Learn more about COVID-19 restrictions in United States in our dedicated Stories article.

Frequently asked questions

How long does it take to travel from St. Louis to Seattle?
A one-way nonstop (direct) flight between St. Louis and Seattle takes around 4.4 hours.
What is the flight distance between St. Louis and Seattle?
The flight distance between St. Louis and Seattle is 2747 km.
What airlines offer nonstop (direct) flights between St. Louis and Seattle?
Several carriers operate flights between St. Louis and Seattle. Airlines offering nonstop (direct) flights include Alaska Airlines, American Airlines.
What are the most popular routes to and from St. Louis?
Travelers frequently search for route combinations, such as St. Louis and London, Manchester, Las Vegas, Dublin, San Jose, Orlando, Tampa, Washington, D.C., Glasgow, San Francisco, Houston, Minneapolis, Detroit, Los Angeles, Raleigh, Atlanta, Guayaquil, Edmonton, Vilnius, Adelaide.
What are the most popular routes to and from Seattle?
Travelers frequently search for route combinations, such as Seattle and London, Dublin, Manila, Bangkok, Tallinn, Vilnius, Detroit, New York, Manchester, Melbourne, Los Angeles, Chicago, Paris, Denver, Hong Kong, Washington, D.C., Toronto, Denpasar, Atlanta, Dallas.
What airports are near St. Louis?
The main airport in St. Louis is St. Louis Lambert International. It is also served by St. Louis Lambert International, General Wayne A. Downing Peoria International, Central Illinois Regional, MidAmerica St. Louis, Evansville Regional, Williamson County Regional, Abraham Lincoln Capital, Columbia Regional, Quincy Regional, Decatur.
What airports are near Seattle?
The main airport in Seattle is Seattle–Tacoma International. It is also served by Portland International, Vancouver International, Bellingham International, Paine Field Everett, Abbotsford International, Yakima Air Terminal, Pangborn Memorial, Victoria Inner Harbour SPB, Vancouver Harbour Flight Centre.
What buses and trains depart from St. Louis?
A number of bus and train companies depart from St. Louis, including Burlington Trailways, Greyhound.
Is it possible to combine flights, buses, and trains in one itinerary when traveling between St. Louis and Seattle?
Yes, it's possible to combine different modes of transport between St. Louis and Seattle thanks to our Virtual Interlining technology. Making use of not only flights but also trains and buses between St. Louis and Seattle can give rise to new adventures. Read more about how Virtual Interlining works on Kiwi.com Stories.
What is Virtual Interlining and how do I use it?
Which airlines fly between St. Louis and Seattle?
When's the best time to travel between St. Louis and Seattle?
What flights operate between St. Louis and Seattle?
How many airports are there near St. Louis?
How many airports are there near Seattle?
Is it possible to reach St. Louis by bus or train?
What time do nonstop (direct) flights between St. Louis and Seattle depart?
What time do nonstop (direct) flights between St. Louis and Seattle arrive?
What time do flights between St. Louis and Seattle depart?
What time do flights between St. Louis and Seattle arrive?

Planning a trip? Thanks to our Virtual Interlining algorithm, we offer billions of route combinations between any A and any B in the world by plane, train, and bus. Find the cheapest routes and best deals for you, as well as the best dates on which to travel.

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