AirHint found the following cheapest return flights from San Diego (SAN) to Seoul (ICN) in August 2025 (see full year).

Return flights

13 Aug - 24 Aug	Hawaiian Airlines
09 Aug - 20 Aug	Alaska Airlines
20 Aug - 23 Aug	Hawaiian Airlines
04 Aug - 18 Aug	Hawaiian Airlines
18 Aug - 28 Aug	Hawaiian Airlines
08 Aug - 12 Aug	Frontier Airlines
04 Aug - 13 Aug	Hawaiian Airlines

Also check the deals for one-way flights from San Diego 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 Diego to Seoul in August from $884

Return flights