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

Return flights

24 Aug - 03 Sep	United	direct
20 Aug - 03 Sep	United	direct
10 Aug - 17 Aug	Philippine Airlines
11 Aug - 18 Aug	Philippine Airlines
04 Aug - 11 Aug	Philippine Airlines
12 Aug - 19 Aug	Philippine Airlines
10 Aug - 17 Aug	United	direct
11 Aug - 18 Aug	United	direct
12 Aug - 19 Aug	United	direct
04 Aug - 11 Aug	Asiana Airlines	direct
01 Aug - 14 Aug	United	direct
02 Aug - 15 Aug	United	direct

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

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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Cheapest return flights from San Francisco to Seoul in August from 563€

Return flights