Cheapest return flights from San Francisco to Seoul in December from $638

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

Return flights

08 Dec - 12 Dec Air Premia direct
10 Dec - 17 Dec Air Premia direct
05 Dec - 15 Dec Air Premia direct
28 Dec - 26 Jan Air Premia direct
03 Dec - 10 Dec Air Premia direct
27 Dec - 13 Jan United direct
09 Dec - 13 Jan United direct
24 Dec - 26 Jan Air Premia direct
03 Dec - 24 Dec Air Premia direct
03 Dec - 09 Dec Asiana Airlines direct
03 Dec - 18 Dec Asiana Airlines direct
01 Dec - 20 Dec Asiana Airlines direct
02 Dec - 23 Dec Korean Air
04 Dec - 13 Dec Korean Air
10 Dec - 12 Jan Hawaiian Airlines
24 Dec - 14 Jan Air Premia direct
10 Dec - 12 Jan United direct
26 Dec - 07 Jan Air Canada
25 Dec - 09 Jan Korean Air
23 Dec - 10 Jan Korean Air

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.

Book a cheap hotel in Seoul

Cheap car rent in Seoul

Feel free to contact us with any feedback or request another flight research.