Cheapest return flights from San Francisco to Seoul in December from $628

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

Return flights

03 Dec - 10 Dec Air Premia direct
01 Dec - 05 Dec Air Premia direct
01 Dec - 08 Dec Air Premia direct
09 Dec - 25 Dec United direct
06 Dec - 27 Dec United direct
01 Dec - 06 Dec United direct
03 Dec - 26 Dec United direct
09 Dec - 20 Jan United direct
04 Dec - 16 Dec United direct
09 Dec - 16 Dec United direct
01 Dec - 15 Dec United direct
29 Dec - 18 Jan Air Premia
31 Dec - 15 Jan Air Premia
31 Dec - 15 Jan United direct
25 Dec - 26 Jan United direct
29 Dec - 18 Jan United direct
10 Dec - 16 Jan United direct
11 Dec - 17 Jan Flair Airlines
11 Dec - 18 Jan Flair Airlines
10 Dec - 18 Jan United direct

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

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