Cheapest return flights from San Francisco to Seoul in April from $588

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

Return flights

21 Apr - 31 May China Southern
08 Apr - 16 May Air Premia direct
10 Apr - 27 Apr Air Premia direct
01 Apr - 20 Apr Air Premia direct
01 Apr - 22 Apr Air Premia direct
10 Apr - 26 Apr Air Premia direct
13 Apr - 27 Apr Air Premia direct
10 Apr - 24 Apr Air Premia direct
19 Apr - 26 Apr Air Premia direct
17 Apr - 26 Apr Air Premia direct
12 Apr - 24 Apr Air Premia direct
10 Apr - 20 Apr Air Premia direct
29 Apr - 17 May Air Premia direct
22 Apr - 03 May China Southern
28 Apr - 03 May United direct
30 Apr - 17 May United direct
29 Apr - 06 May United direct
21 Apr - 12 May United direct
28 Apr - 05 May United direct
29 Apr - 05 May United direct

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

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