Cheapest one-way flights from Seattle to Seoul in August from $429

Best time to book flights for Seattle (SEA) to Seoul (ICN) flights at AirHint

AirHint found the following cheapest one-way flights from Seattle (SEA) to Seoul (ICN) in August 2025 (see full year).

One-Way flights

14 Aug Air Canada
15 Aug Alaska Airlines
11 Aug China Airlines
09 Aug WestJet
02 Aug WestJet
16 Aug Air Canada
14 Aug Asiana Airlines direct
09 Aug Asiana Airlines direct
11 Aug Asiana Airlines direct
16 Aug Delta direct

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

Skyscanner

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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