Cheapest return flights from San Francisco to Seoul in September from $649

AirHint found the following cheapest return flights from San Francisco (SFO) to Seoul (ICN) in September 2026 (see full year).

Return flights

06 Sep - 13 Sep Air Premia direct
19 Sep - 30 Sep Philippine Airlines
02 Sep - 17 Sep Philippine Airlines
07 Sep - 24 Sep Philippine Airlines
22 Sep - 07 Oct Philippine Airlines
01 Sep - 09 Sep Philippine Airlines
18 Sep - 26 Sep Philippine Airlines
08 Sep - 23 Sep Philippine Airlines
20 Sep - 03 Oct Philippine Airlines
03 Sep - 20 Sep Philippine Airlines
06 Sep - 19 Sep Philippine Airlines
26 Sep - 10 Oct Air Canada
12 Sep - 03 Oct Philippine Airlines
19 Sep - 30 Sep Korean Air direct
12 Sep - 03 Oct Korean Air direct
20 Sep - 03 Oct Korean Air direct
22 Sep - 07 Oct United direct
26 Sep - 10 Oct United direct

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

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