₹11,558 Cheap Flights from St. Louis (STL) to Seattle (SEA)

View ₹11,558 flight on Sat, 18 Jul 2026Opens in a new window

Popular airlines from Lambert-St. Louis International Airport (STL) to Seattle-Tacoma International Airport (SEA)

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

Prices were available within the past 7 days and start at ₹11,558 for one-way flights and ₹18,832 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, 5 Jun - Tue, 9 Jun
STL
St. Louis
SEA
Seattle
₹18,832 Return, found 6 days ago
₹18,832
Return
found 6 days ago
Select Delta flight, departing Fri, 5 Jun from St. Louis to Seattle, returning Tue, 9 Jun, priced at ₹18,832 found 6 days ago
Delta
Sun, 16 Aug - Wed, 26 Aug
STL
St. Louis
SEA
Seattle
₹20,981 Return, found 5 days ago
₹20,981
Return
found 5 days ago
Select Delta flight, departing Sun, 16 Aug from St. Louis to Seattle, returning Wed, 26 Aug, priced at ₹20,981 found 5 days ago
Delta
Sat, 6 Jun - Tue, 9 Jun
STL
St. Louis
SEA
Seattle
₹21,993 Return, found 6 days ago
₹21,993
Return
found 6 days ago
Select Delta flight, departing Sat, 6 Jun from St. Louis to Seattle, returning Tue, 9 Jun, priced at ₹21,993 found 6 days ago
Delta
Sat, 22 Aug - Sat, 29 Aug
STL
St. Louis
SEA
Seattle
₹22,008 Return, found 4 days ago
₹22,008
Return
found 4 days ago
Select Delta flight, departing Sat, 22 Aug from St. Louis to Seattle, returning Sat, 29 Aug, priced at ₹22,008 found 4 days ago
Delta
Sat, 27 Jun - Tue, 7 Jul
STL
St. Louis
SEA
Seattle
₹23,111 Return, found 6 days ago
₹23,111
Return
found 6 days ago
Select Delta flight, departing Sat, 27 Jun from St. Louis to Seattle, returning Tue, 7 Jul, priced at ₹23,111 found 6 days ago
Delta
Fri, 5 Jun - Tue, 9 Jun
STL
St. Louis
SEA
Seattle
₹23,202 Return, found 6 days ago
₹23,202
Return
found 6 days ago
Select Delta flight, departing Fri, 5 Jun from St. Louis to Seattle, returning Tue, 9 Jun, priced at ₹23,202 found 6 days ago
Delta
Wed, 3 Jun - Thu, 4 Jun
STL
St. Louis
SEA
Seattle
₹23,299 Return, found 4 days ago
₹23,299
Return
found 4 days ago
Select Delta flight, departing Wed, 3 Jun from St. Louis to Seattle, returning Thu, 4 Jun, priced at ₹23,299 found 4 days ago
United
Sat, 6 Jun - Tue, 9 Jun
STL
St. Louis
SEA
Seattle
₹23,488 Return, found 6 days ago
₹23,488
Return
found 6 days ago
Select United flight, departing Sat, 6 Jun from St. Louis to Seattle, returning Tue, 9 Jun, priced at ₹23,488 found 6 days ago
Delta
Fri, 5 Jun - Tue, 9 Jun
STL
St. Louis
SEA
Seattle
₹23,578 Return, found 6 days ago
₹23,578
Return
found 6 days ago
Select Delta flight, departing Fri, 5 Jun from St. Louis to Seattle, returning Tue, 9 Jun, priced at ₹23,578 found 6 days ago
American Airlines
Sat, 6 Jun - Tue, 9 Jun
STL
St. Louis
SEA
Seattle
₹26,666 Return, found 6 days ago
₹26,666
Return
found 6 days ago
Select American Airlines flight, departing Sat, 6 Jun from St. Louis to Seattle, returning Tue, 9 Jun, priced at ₹26,666 found 6 days ago

Alternative airports near Seattle

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

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city centre is 20 minutes. Flights from ₹40,023
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city centre20 min
Flights from ₹40,023

Find the cheapest month to fly from St. Louis (STL) to Seattle (SEA)

April is typically the cheapest month to fly

From ₹16,764 - ₹27,192 per traveller.

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 ₹18,832. 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.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
American Airlines, Delta, United
Return price
₹18,832
Distance
2728 km
Average flight time
3 hours 23 mins

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