NZ$167 Cheap Flights St. Louis to Seattle (STL-SEA)

View NZ$167 flight on Wed, 14 May 2025Opens in a new window

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Cheap Flights from St. Louis (STL) to Seattle (SEA)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed., 14 May - Wed., 21 May
STL
St. Louis
SEA
Seattle
NZ$334 Return, found 5 days ago
NZ$334
Return
found 5 days ago
Select Delta flight, departing Wed., 14 May from St. Louis to Seattle, returning Wed., 21 May, priced at NZ$334 found 5 days ago
Delta
Wed., 14 May - Wed., 21 May
STL
St. Louis
SEA
Seattle
NZ$378 Return, found 5 days ago
NZ$378
Return
found 5 days ago
Select Delta flight, departing Wed., 14 May from St. Louis to Seattle, returning Wed., 21 May, priced at NZ$378 found 5 days ago
United
Wed., 14 May - Wed., 21 May
STL
St. Louis
SEA
Seattle
NZ$439 Return, found 5 days ago
NZ$439
Return
found 5 days ago
Select United flight, departing Wed., 14 May from St. Louis to Seattle, returning Wed., 21 May, priced at NZ$439 found 5 days ago
Delta
Wed., 14 May - Wed., 21 May
STL
St. Louis
SEA
Seattle
NZ$448 Return, found 5 days ago
NZ$448
Return
found 5 days ago
Select Delta flight, departing Wed., 14 May from St. Louis to Seattle, returning Wed., 21 May, priced at NZ$448 found 5 days ago
United
Wed., 14 May - Wed., 21 May
STL
St. Louis
SEA
Seattle
NZ$483 Return, found 5 days ago
NZ$483
Return
found 5 days ago
Select United flight, departing Wed., 14 May from St. Louis to Seattle, returning Wed., 21 May, priced at NZ$483 found 5 days ago
American Airlines
Wed., 14 May - Wed., 21 May
STL
St. Louis
SEA
Seattle
NZ$490 Return, found 5 days ago
NZ$490
Return
found 5 days ago
Select American Airlines flight, departing Wed., 14 May from St. Louis to Seattle, returning Wed., 21 May, priced at NZ$490 found 5 days ago
Delta
Wed., 14 May - Wed., 21 May
STL
St. Louis
SEA
Seattle
NZ$539 Return, found 5 days ago
NZ$539
Return
found 5 days ago
Select Delta flight, departing Wed., 14 May from St. Louis to Seattle, returning Wed., 21 May, priced at NZ$539 found 5 days ago
American Airlines
Wed., 14 May - Wed., 21 May
STL
St. Louis
SEA
Seattle
NZ$545 Return, found 5 days ago
NZ$545
Return
found 5 days ago
Select American Airlines flight, departing Wed., 14 May from St. Louis to Seattle, returning Wed., 21 May, priced at NZ$545 found 5 days ago
United
Wed., 14 May - Wed., 21 May
STL
St. Louis
SEA
Seattle
NZ$553 Return, found 5 days ago
NZ$553
Return
found 5 days ago
Select United flight, departing Wed., 14 May from St. Louis to Seattle, returning Wed., 21 May, priced at NZ$553 found 5 days ago
Delta
Wed., 14 May - Wed., 21 May
STL
St. Louis
SEA
Seattle
NZ$554 Return, found 5 days ago
NZ$554
Return
found 5 days ago
Select Delta flight, departing Wed., 14 May from St. Louis to Seattle, returning Wed., 21 May, priced at NZ$554 found 5 days ago
Flight from St. Louis to Seattle route information
Origin airport
Lambert-St. Louis Intl.
Destination airport
Seattle - Tacoma Intl.
Return price
NZ$334
Distance
2728 km

Perfect flights from St. Louis to Seattle

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from St. Louis to Seattle. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of Seattle, surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Lambert-St. Louis Intl. to Seattle - Tacoma Intl. ticket options cater to your travel preferences, with incredible one-way fares from NZ$167 and roundtrip prices from NZ$334. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Seattle - Tacoma Intl. and explore Seattle and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your STL to SEA travel arrangements today and embark on the journey of a lifetime in Seattle.

Frequently asked questions

How much is a flight from St. Louis Lambert International Airport to Sea-Tac Airport?
If you’re travelling between Lambert-St. Louis Intl. Airport (STL) and SEA, round-trip flights start from NZ$334. This price is based on airfares available within the last 7 days on Expedia for flights departing within the next year, so don’t delay. Book now and save yourself money and time. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Lambert-St. Louis Intl. Airport (STL) to Seattle - Tacoma Intl. Airport (SEA)?
Each airline has different terms and conditions. If you decide to cancel your holiday, visit our Customer Service Portal.
How do I find cheap flights from St. Louis Lambert International Airport to SEA that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you’re searching for Lambert Field to Sea-Tac Airport flights, you’ll see a “no change fees” filter for you to select.
How far is the flight from St. Louis Lambert International Airport to Sea-Tac Airport?
It’s around 2 700 kilometres between STL and SEA, so you’ll be strapped into your seat for a while. Keep yourself entertained with things like your e-reader or a thrilling novel.
Which airlines fly direct from Lambert-St. Louis Intl. Airport (STL) to Seattle - Tacoma Intl. Airport (SEA)?
Offering 30 flights each month, Alaska Airlines (AS) is a popular choice when flying directly from St. Louis Lambert International Airport to Sea-Tac Airport.
Are STL to Seattle - Tacoma Intl. Airport (SEA) flight tickets cheaper when they're purchased at the last minute?
Last-minute bookings from St. Louis Lambert International Airport to Sea-Tac Airport can be hit-or-miss. It is possible to find a bargain, but then again, you could miss out altogether! If you’d rather play it safe and start planning your trip ahead of time, Expedia compares flight deals up to 12 months in advance. Just bear in mind that not all airlines publish their prices so far in advance. Our advice? Check back often as prices are updated regularly.
*Available to Expedia members.