AirHint found the following cheapest return flights from Portland (PDX) to Seoul (ICN) in November 2025 (see full year).
Return flights
| 12 Nov - 19 Nov | Air Canada | ||
| 11 Nov - 18 Nov | Air Canada | ||
| 07 Nov - 11 Nov | Delta | ||
| 18 Nov - 18 Dec | Delta | ||
| 22 Nov - 05 Dec | Air Canada |
Also check the deals for one-way flights from Portland to Seoul in November.
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