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

Return flights

10 Apr - 19 Apr	Air Premia	direct
18 Apr - 25 Apr	Air Canada
15 Apr - 29 Apr	United	direct
10 Apr - 24 Apr	United	direct
04 Apr - 11 Apr	United	direct
06 Apr - 22 Apr	United	direct
18 Apr - 25 Apr	United	direct

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

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 April from 892€

Return flights