Cheapest return flights from San Francisco to Seoul in December from 610€

Best time to book flights for San Francisco (SFO) to Seoul (ICN) flights at AirHint

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

Return flights

08 Dec - 14 Dec United direct
01 Dec - 30 Dec United direct
16 Dec - 23 Dec Korean Air direct
12 Dec - 30 Dec Korean Air direct
15 Dec - 08 Jan Delta direct
15 Dec - 09 Jan Delta direct
17 Dec - 08 Jan Delta direct
18 Dec - 08 Jan Delta
16 Dec - 31 Dec Delta
23 Dec - 31 Dec Delta
15 Dec - 31 Dec Delta
13 Dec - 31 Dec Delta
14 Dec - 31 Dec Delta
12 Dec - 31 Dec Delta
16 Dec - 07 Jan Delta
17 Dec - 07 Jan Delta
15 Dec - 07 Jan Delta
20 Dec - 10 Jan Delta
20 Dec - 07 Jan Delta
18 Dec - 08 Jan Korean Air direct

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

Skyscanner

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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