Cheapest one-way flights from Seattle to Seoul in May from $537

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 May 2025 (see full year).

One-Way flights

13 May WestJet
05 May Air Canada
06 May Air Canada
07 May Air Canada
07 May Asiana Airlines direct
09 May Asiana Airlines direct
05 May Asiana Airlines direct
06 May Asiana Airlines direct
13 May Korean Air direct
28 May WestJet

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

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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