Cheapest return flights from Portland to Seoul in December from 787€

AirHint found the following cheapest return flights from Portland (PDX) to Seoul (ICN) in December 2025 (see full year).

Return flights

07 Dec - 20 Dec Delta
17 Dec - 22 Dec Air Canada
30 Dec - 06 Jan Air Canada
21 Dec - 09 Jan Hawaiian Airlines
27 Dec - 07 Jan Alaska Airlines
21 Dec - 31 Dec Frontier Airlines
15 Dec - 07 Jan Hawaiian Airlines
17 Dec - 01 Jan Delta
14 Dec - 04 Jan Alaska Airlines
14 Dec - 03 Jan Frontier Airlines
18 Dec - 03 Jan Hawaiian Airlines

Also check the deals for one-way flights from Portland to Seoul in December.

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