Flights From St. Louis (STL) to SeaTac (SEA)

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Selected fares from St. Louis to SeaTac

The cheapest prices found with in the last 7 days for return flights were CA $545 and CA $249 for one-way flights to SeaTac for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed., Aug. 6 - Sun., Aug. 17
STL
Lambert-St. Louis Intl.
SEA
Seattle - Tacoma Intl.
CA $545 Roundtrip, found 1 day ago
CA $545
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed., Aug. 6 from Lambert-St. Louis Intl. to Seattle - Tacoma Intl., returning Sun., Aug. 17, priced at CA $545 found 1 day ago
Alaska Airlines
Wed., Aug. 6 - Sun., Aug. 17
STL
Lambert-St. Louis Intl.
SEA
Seattle - Tacoma Intl.
CA $572 Roundtrip, found 1 day ago
CA $572
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed., Aug. 6 from Lambert-St. Louis Intl. to Seattle - Tacoma Intl., returning Sun., Aug. 17, priced at CA $572 found 1 day ago
Alaska Airlines
Wed., Aug. 6 - Sun., Aug. 17
STL
Lambert-St. Louis Intl.
SEA
Seattle - Tacoma Intl.
CA $586 Roundtrip, found 1 day ago
CA $586
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed., Aug. 6 from Lambert-St. Louis Intl. to Seattle - Tacoma Intl., returning Sun., Aug. 17, priced at CA $586 found 1 day ago