Cheapest return flights from Seoul to San Francisco in April from $391

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

Return flights

08 Apr - 16 Apr Hawaiian Airlines
01 Apr - 09 Apr Hawaiian Airlines
01 Apr - 14 Apr Hawaiian Airlines
02 Apr - 07 Apr Hawaiian Airlines
08 Apr - 15 Apr Hawaiian Airlines
01 Apr - 05 Apr Hawaiian Airlines
17 Apr - 20 Apr Hawaiian Airlines
08 Apr - 13 Apr Hawaiian Airlines
08 Apr - 20 Apr Hawaiian Airlines
08 Apr - 14 Apr Hawaiian Airlines
29 Apr - 03 May Air Premia direct
24 Apr - 04 May Air Premia direct
01 Apr - 13 May Air Premia direct
22 Apr - 04 May Air Premia direct
10 Apr - 01 May Air Premia direct
27 Apr - 08 May Air Premia direct
24 Apr - 29 May Air Premia direct
22 Apr - 20 May Air Premia direct
26 Apr - 06 May Air Premia direct
27 Apr - 13 May Air Premia direct

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

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