Cheapest return flights from San Francisco to Seoul in September from $633

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

Return flights

01 Sep - 12 Sep Air Premia direct
12 Sep - 19 Sep Air Premia direct
08 Sep - 14 Sep Air Premia direct
08 Sep - 15 Sep Air Premia direct
15 Sep - 22 Sep Air Premia direct
01 Sep - 10 Sep Air Premia direct
03 Sep - 10 Sep Air Premia direct
03 Sep - 15 Sep Air Premia direct
10 Sep - 17 Sep Air Premia direct
10 Sep - 15 Sep Air Premia direct
26 Sep - 11 Oct Hawaiian Airlines
27 Sep - 11 Oct United direct
27 Sep - 12 Oct United direct
27 Sep - 24 Oct United direct
02 Sep - 11 Oct United direct
29 Sep - 28 Oct United direct
25 Sep - 14 Oct United direct
26 Sep - 11 Oct United direct
11 Sep - 01 Oct United direct
27 Sep - 05 Oct Hawaiian Airlines

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

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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