Cheapest return flights from Portland to Seoul in December from 745€

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

Return flights

01 Dec - 15 Dec Air Canada
03 Dec - 10 Dec Air Canada
23 Dec - 30 Dec United
24 Dec - 05 Jan Hawaiian Airlines
26 Dec - 01 Jan Delta
21 Dec - 31 Dec Hawaiian Airlines
20 Dec - 31 Dec Hawaiian Airlines

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

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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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