Cheapest one-way flights from Seattle to Seoul in September from 358€

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

One-Way flights

11 Sep WestJet
03 Sep WestJet
04 Sep WestJet
14 Sep Alaska Airlines
01 Sep Alaska Airlines
19 Sep WestJet
16 Sep Hawaiian Airlines
10 Sep Air Canada
22 Sep Air Canada
07 Sep Air Canada

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

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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