Flights to Cascade Loop Scenic Byway from Seoul - ￥129,000

View ￥129,000 flight on Thu, Sep 18, 2025Opens in a new window

Popular airlines from Seoul to Cascade Loop Scenic Byway

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Cheap Flights from Seoul to Cascade Loop Scenic Byway (SEL-SEA)

Prices were available within the past 7 days and start at ￥129,000 for one-way flights and ￥706,950 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air China
Mon, Nov 10 - Thu, Nov 13
GMP
Seoul
PAE
Seattle
￥706,950 Roundtrip, found 3 days ago
￥706,950
Roundtrip
found 3 days ago
Select Air China flight, departing Mon, Nov 10 from Seoul to Seattle, returning Thu, Nov 13, priced at ￥706,950 found 3 days ago
Air China
Thu, Sep 18 - Mon, Sep 22
GMP
Seoul
PAE
Seattle
￥788,450 Roundtrip, found 3 days ago
￥788,450
Roundtrip
found 3 days ago
Select Air China flight, departing Thu, Sep 18 from Seoul to Seattle, returning Mon, Sep 22, priced at ￥788,450 found 3 days ago

Find the cheapest month to fly from Seoul (SEL) to Seattle (SEA)

September is typically the cheapest month to fly

From ￥66,598 - ￥157,456 per traveler.

Graph displaying average flight prices per month

*Available to Expedia members.