Cheapest return flights from San Francisco to Seoul in December from $639

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

Return flights

05 Dec - 12 Dec Air Premia direct
27 Dec - 18 Jan Air Premia direct
01 Dec - 07 Dec Air Premia direct
03 Dec - 14 Dec Air Premia direct
05 Dec - 07 Dec Air Premia direct
05 Dec - 13 Dec United direct
04 Dec - 07 Dec United direct
04 Dec - 08 Dec United direct
05 Dec - 22 Dec Air Premia direct
06 Dec - 28 Dec United direct
29 Dec - 18 Jan United direct
03 Dec - 29 Dec Air Premia direct
24 Dec - 23 Jan Alaska Airlines
24 Dec - 19 Jan Alaska Airlines
24 Dec - 23 Jan Air Premia direct
24 Dec - 19 Jan Air Premia direct
03 Dec - 07 Jan Air Canada
08 Dec - 12 Jan Air Premia direct
15 Dec - 23 Jan Air Premia direct
15 Dec - 15 Jan United direct

Also check the deals for one-way flights from San Francisco 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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