Photo by Port of Seattle

$190 Cheap United flights St. Louis (STL) to Seattle (SEA)
$190 Cheap United flights St. Louis (STL) to Seattle (SEA)
Prices were available within the past 7 days and start at $190 for one-way flights and $279 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Aug 18 - Wed, Aug 26
STL
St. Louis
SEA
Seattle
$279 Roundtrip, found 1 day ago
$279
Roundtrip
found 1 day ago

Tue, Aug 18 - Wed, Aug 26
STL
St. Louis
SEA
Seattle
$306 Roundtrip, found 1 day ago
$306
Roundtrip
found 1 day ago

Tue, Aug 18 - Wed, Aug 26
STL
St. Louis
SEA
Seattle
$322 Roundtrip, found 1 day ago
$322
Roundtrip
found 1 day ago

Tue, Aug 18 - Wed, Aug 26
STL
St. Louis
SEA
Seattle
$333 Roundtrip, found 1 day ago
$333
Roundtrip
found 1 day ago

Tue, Aug 18 - Wed, Aug 26
STL
St. Louis
SEA
Seattle
$337 Roundtrip, found 1 day ago
$337
Roundtrip
found 1 day ago

Tue, Aug 18 - Wed, Aug 26
STL
St. Louis
SEA
Seattle
$342 Roundtrip, found 1 day ago
$342
Roundtrip
found 1 day ago
Alternative airports near Seattle
Prices were available within the past 7 days. Prices and availability are subject to change.
Travel information
Origin airport | Lambert-St. Louis Intl. |
|---|---|
Destination airport | Seattle - Tacoma Intl. |
Airlines serving | Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United |
Popular airline | American Airlines |
Distance | 2728 km |
Average flight time | 2 hours 29 mins |
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Most Popular United Routes from St. Louis
Most Popular United Routes from Seattle
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Popular Domestic Routes in Seattle - Tacoma Intl.
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