Flights to Blake Island from St. Louis - ￥18,600

View ￥18,600 flight on Sun, Aug 31, 2025Opens in a new window

Popular airlines from St. Louis to Blake Island

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

Prices were available within the past 7 days and start at ￥18,600 for one-way flights and ￥52,910 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sun, Aug 3 - Fri, Aug 8
STL
St. Louis
SEA
Seattle
￥52,910 Roundtrip, found 3 days ago
￥52,910
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sun, Aug 3 from St. Louis to Seattle, returning Fri, Aug 8, priced at ￥52,910 found 3 days ago
Delta
Sun, Aug 3 - Fri, Aug 8
STL
St. Louis
SEA
Seattle
￥53,450 Roundtrip, found 3 days ago
￥53,450
Roundtrip
found 3 days ago
Select Delta flight, departing Sun, Aug 3 from St. Louis to Seattle, returning Fri, Aug 8, priced at ￥53,450 found 3 days ago
American Airlines
Sun, Aug 3 - Fri, Aug 8
STL
St. Louis
SEA
Seattle
￥60,650 Roundtrip, found 3 days ago
￥60,650
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sun, Aug 3 from St. Louis to Seattle, returning Fri, Aug 8, priced at ￥60,650 found 3 days ago
American Airlines
Sun, Aug 3 - Fri, Aug 8
STL
St. Louis
SEA
Seattle
￥60,860 Roundtrip, found 3 days ago
￥60,860
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sun, Aug 3 from St. Louis to Seattle, returning Fri, Aug 8, priced at ￥60,860 found 3 days ago
Delta
Sun, Aug 3 - Fri, Aug 8
STL
St. Louis
SEA
Seattle
￥60,970 Roundtrip, found 3 days ago
￥60,970
Roundtrip
found 3 days ago
Select Delta flight, departing Sun, Aug 3 from St. Louis to Seattle, returning Fri, Aug 8, priced at ￥60,970 found 3 days ago
United
Sun, Aug 3 - Fri, Aug 8
STL
St. Louis
SEA
Seattle
￥69,460 Roundtrip, found 3 days ago
￥69,460
Roundtrip
found 3 days ago
Select United flight, departing Sun, Aug 3 from St. Louis to Seattle, returning Fri, Aug 8, priced at ￥69,460 found 3 days ago

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

November is typically the cheapest month to fly

From ￥19,786 - ￥63,397 per traveler.

Graph displaying average flight prices per month

*Available to Expedia members.