$149 Cheap Alaska Airlines flights St. Louis (STL) to Seattle (SEA)

$149 Cheap Alaska Airlines flights St. Louis (STL) to Seattle (SEA)

Prices were available within the past 7 days and start at $149 for one-way flights and $347 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Sep 30 - Fri, Oct 9

STL

St. Louis

SEA

Seattle

$347 Roundtrip, found 18 hours ago

$347

Roundtrip

found 18 hours ago

Select Alaska Airlines flight, departing Wed, Sep 30 from St. Louis to Seattle, returning Fri, Oct 9, priced at $347 found 18 hours ago

Sun, Oct 25 - Fri, Nov 6

STL

St. Louis

SEA

Seattle

$367 Roundtrip, found 18 hours ago

$367

Roundtrip

found 18 hours ago

Select Alaska Airlines flight, departing Sun, Oct 25 from St. Louis to Seattle, returning Fri, Nov 6, priced at $367 found 18 hours ago

Tue, Jul 28 - Wed, Aug 5

STL

St. Louis

SEA

Seattle

$369 Roundtrip, found 7 hours ago

$369

Roundtrip

found 7 hours ago

Select Alaska Airlines flight, departing Tue, Jul 28 from St. Louis to Seattle, returning Wed, Aug 5, priced at $369 found 7 hours ago

Thu, Nov 5 - Fri, Nov 20

STL

St. Louis

SEA

Seattle

$399 Roundtrip, found 18 hours ago

$399

Roundtrip

found 18 hours ago

Select Alaska Airlines flight, departing Thu, Nov 5 from St. Louis to Seattle, returning Fri, Nov 20, priced at $399 found 18 hours ago

Mon, Nov 30 - Fri, Dec 11

STL

St. Louis

SEA

Seattle

$407 Roundtrip, found 18 hours ago

$407

Roundtrip

found 18 hours ago

Select Alaska Airlines flight, departing Mon, Nov 30 from St. Louis to Seattle, returning Fri, Dec 11, priced at $407 found 18 hours ago

Fri, Nov 20 - Fri, Dec 4

STL

St. Louis

SEA

Seattle

$457 Roundtrip, found 18 hours ago

$457

Roundtrip

found 18 hours ago

Select Alaska Airlines flight, departing Fri, Nov 20 from St. Louis to Seattle, returning Fri, Dec 4, priced at $457 found 18 hours ago

Thu, Nov 12 - Sun, Nov 29

STL

St. Louis

SEA

Seattle

$577 Roundtrip, found 18 hours ago

$577

Roundtrip

found 18 hours ago

Select Alaska Airlines flight, departing Thu, Nov 12 from St. Louis to Seattle, returning Sun, Nov 29, priced at $577 found 18 hours ago