Cheapest return flights from Seoul to San Francisco in December from $466

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

Return flights

26 Dec - 29 Dec Air Premia direct
19 Dec - 29 Dec Air Premia direct
24 Dec - 29 Dec Air Premia direct
19 Dec - 31 Dec Air Premia direct
03 Dec - 07 Dec Air Premia direct
14 Dec - 31 Dec Air Premia direct
03 Dec - 08 Dec Air Premia direct
19 Dec - 28 Dec Air Premia direct
26 Dec - 31 Dec Air Premia direct
26 Dec - 02 Jan Air Premia direct
26 Dec - 05 Jan Air Premia direct
24 Dec - 02 Jan Air Premia direct
24 Dec - 04 Jan Air Premia direct
26 Dec - 28 Dec Air Premia direct
26 Dec - 30 Jan United direct
20 Dec - 03 Jan United direct
24 Dec - 26 Jan United direct
24 Dec - 03 Jan United direct
24 Dec - 30 Jan United direct
24 Dec - 21 Jan United direct

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