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

Return flights

26 Aug - 30 Aug	China Airlines
24 Aug - 29 Aug	China Airlines
25 Aug - 17 Sep	China Airlines
31 Aug - 30 Sep	China Airlines
24 Aug - 02 Sep	China Airlines
24 Aug - 30 Aug	China Airlines
23 Aug - 04 Sep	China Airlines
17 Aug - 31 Aug	Singapore Airlines
21 Aug - 29 Aug	Singapore Airlines
10 Aug - 14 Aug	China Airlines
10 Aug - 19 Aug	China Airlines
04 Aug - 12 Aug	Air Canada
15 Aug - 21 Aug	Air Canada
09 Aug - 16 Aug	Singapore Airlines
25 Aug - 17 Sep	Korean Air	direct
31 Aug - 30 Sep	Korean Air	direct
24 Aug - 02 Sep	Korean Air	direct
23 Aug - 04 Sep	Korean Air	direct

Also check the deals for one-way flights from Seoul to San Francisco 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 Seoul to San Francisco in August from $875

Return flights