Cheapest one-way flights from Seattle to Seoul in August from $420

AirHint found the following cheapest one-way flights from Seattle (SEA) to Seoul (ICN) in August 2026 (see full year).

One-Way flights

19 Aug Asiana Airlines direct
24 Aug Asiana Airlines direct
07 Aug Asiana Airlines direct
15 Aug Delta direct
11 Aug Delta direct
04 Aug Delta direct
02 Aug Delta direct
01 Aug Delta direct

Also check the deals for return flights from Seattle to Seoul in August.

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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