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Flights from St. Louis Lambert Intl. Airport (STL) to Seattle-Tacoma International Airport (SEA)
Flights to Seattle
Washington
United States of America
Flights
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Popular airlines from St. Louis Lambert Intl. Airport (STL) to Seattle-Tacoma International Airport (SEA)

Alaska Airlines
American Airlines
Delta
United
Southwest Airlines
Frontier Airlines

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

Prices were available within the past 7 days and start at ￥17,110 for one-way flights and ￥33,470 for roundtrip, for the period specified. Prices and availability are subject to change.

All deals

One way

Roundtrip

Wed, Dec 2 - Wed, Dec 2

STL

St. Louis

SEA

Seattle

￥33,470

Roundtrip

Found 1 hour ago

Select Delta flight, departing Wed, Dec 2 from St. Louis to Seattle, returning Wed, Dec 2, priced at ￥33,470 Found 1 hour ago

Sat, Oct 31 - Sat, Nov 7

STL

St. Louis

SEA

Seattle

￥34,210

Roundtrip

Found 2 days ago

Select American Airlines flight, departing Sat, Oct 31 from St. Louis to Seattle, returning Sat, Nov 7, priced at ￥34,210 Found 2 days ago

Wed, Dec 2 - Wed, Dec 2

STL

St. Louis

SEA

Seattle

￥34,360

Roundtrip

Found 1 hour ago

Select American Airlines flight, departing Wed, Dec 2 from St. Louis to Seattle, returning Wed, Dec 2, priced at ￥34,360 Found 1 hour ago

Wed, Dec 2 - Sat, Dec 5

STL

St. Louis

SEA

Seattle

￥34,400

Roundtrip

Found 6 days ago

Select Delta flight, departing Wed, Dec 2 from St. Louis to Seattle, returning Sat, Dec 5, priced at ￥34,400 Found 6 days ago

Tue, Dec 1 - Thu, Dec 3

STL

St. Louis

SEA

Seattle

￥35,260

Roundtrip

Found 5 days ago

Select American Airlines flight, departing Tue, Dec 1 from St. Louis to Seattle, returning Thu, Dec 3, priced at ￥35,260 Found 5 days ago

Sat, Oct 31 - Sat, Nov 7

STL

St. Louis

SEA

Seattle

￥35,830

Roundtrip

Found 2 days ago

Select Delta flight, departing Sat, Oct 31 from St. Louis to Seattle, returning Sat, Nov 7, priced at ￥35,830 Found 2 days ago

Thu, Dec 3 - Sun, Dec 6

STL

St. Louis

SEA

Seattle

￥36,010

Roundtrip

Found 5 days ago

Select Delta flight, departing Thu, Dec 3 from St. Louis to Seattle, returning Sun, Dec 6, priced at ￥36,010 Found 5 days ago

Wed, Dec 2 - Wed, Dec 2

STL

St. Louis

SEA

Seattle

￥41,220

Roundtrip

Found 1 hour ago

Select Southwest Airlines flight, departing Wed, Dec 2 from St. Louis to Seattle, returning Wed, Dec 2, priced at ￥41,220 Found 1 hour ago

Thu, Nov 26 - Sat, Dec 5

STL

St. Louis

SEA

Seattle

￥55,040

Roundtrip

Found 6 days ago

Select United flight, departing Thu, Nov 26 from St. Louis to Seattle, returning Sat, Dec 5, priced at ￥55,040 Found 6 days ago

Sat, Oct 31 - Sat, Nov 7

STL

St. Louis

SEA

Seattle

￥71,960

Roundtrip

Found 2 days ago

Select Alaska Airlines flight, departing Sat, Oct 31 from St. Louis to Seattle, returning Sat, Nov 7, priced at ￥71,960 Found 2 days ago

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

November is typically the cheapest month to fly

From ￥21,116 - ￥79,645 per traveler.

Travel information

Origin airport	St. Louis Lambert Intl. Airport
Destination airport	Seattle-Tacoma International Airport
Distance	2,744 km away
Airlines serving	Alaska Airlines, American Airlines, Delta, United, Southwest Airlines, Frontier Airlines
Popular airline	Alaska Airlines
Roundtrip price	￥33,470
Average flight time	4 hours 29 mins

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￥17,110 Cheap Flights from St. Louis (STL) to Seattle (SEA)

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

Be in the know

Book smarter

Earn twice

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

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

November is typically the cheapest month to flyNovember is typically the cheapest month to fly

Travel information

Explore a world of travel with Expedia

November is typically the cheapest month to fly