AirHint found the following cheapest one-way flights from Seoul (ICN) to Seattle (SEA) in May 2026 (see full year).
One-Way flights
| 15 May | WestJet | ||
| 13 May | EVA Air | ||
| 13 May | Alaska Airlines | direct | |
| 15 May | Delta | direct |
Also check the deals for return flights from Seoul to Seattle in May.
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