AirHint found the following cheapest one-way flights from Oakland (OAK) to Seoul (ICN) in December 2025 (see full year).

One-Way flights

06 Dec	Alaska Airlines
09 Dec	Alaska Airlines
08 Dec	Alaska Airlines
07 Dec	Alaska Airlines
02 Dec	Alaska Airlines
30 Dec	Alaska Airlines
05 Dec	Alaska Airlines
25 Dec	Alaska Airlines
04 Dec	Alaska Airlines
10 Dec	Alaska Airlines

Also check the deals for return flights from Oakland to Seoul in December.

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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Cheapest one-way flights from Oakland to Seoul in December from $521

One-Way flights