Cheapest return flights from San Francisco to Seoul in September from $636

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 September 2025 (see full year).

Return flights

01 Sep - 19 Sep Air Premia direct
07 Sep - 21 Sep Air Premia direct
07 Sep - 14 Sep Air Premia direct
07 Sep - 24 Sep Air Premia direct
03 Sep - 17 Sep Air Premia direct
07 Sep - 22 Sep Air Premia direct
05 Sep - 14 Sep Air Premia direct
15 Sep - 24 Sep Air Premia direct
01 Sep - 08 Sep Air Premia direct
13 Sep - 19 Sep Alaska Airlines
24 Sep - 15 Oct United direct
27 Sep - 11 Oct Alaska Airlines
22 Sep - 13 Oct United direct
20 Sep - 12 Oct Asiana Airlines direct
27 Sep - 05 Oct United direct
24 Sep - 01 Oct Air Premia
27 Sep - 11 Oct United direct
27 Sep - 04 Oct United direct
19 Sep - 04 Oct United direct
17 Sep - 01 Oct Air Premia

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

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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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