$89 Cheap Delta flights St. Louis (STL) to Seattle (SEA)

View $89 flight on Fri, Dec 12, 2025Opens in a new window

$89 Cheap Delta flights St. Louis (STL) to Seattle (SEA)

Prices were available within the past 7 days and start at $89 for one-way flights and $170 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, Dec 8 - Tue, Dec 9
STL
St. Louis
SEA
Seattle
$170 Roundtrip, found 2 hours ago
$170
Roundtrip
found 2 hours ago
Select Delta flight, departing Mon, Dec 8 from St. Louis to Seattle, returning Tue, Dec 9, priced at $170 found 2 hours ago
Delta
Tue, Dec 9 - Wed, Dec 10
STL
St. Louis
SEA
Seattle
$177 Roundtrip, found 1 hour ago
$177
Roundtrip
found 1 hour ago
Select Delta flight, departing Tue, Dec 9 from St. Louis to Seattle, returning Wed, Dec 10, priced at $177 found 1 hour ago
Flights from St. Louis (STL) to Seattle (SEA)
Origin airport
Lambert-St. Louis Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, United
Popular airline
Alaska Airlines
Distance
1705 mi
Average flight time
4 hours 49 mins

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