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

Return flights

06 Mar - 20 Mar	Alaska Airlines
12 Mar - 24 Mar	Cathay Pacific
18 Mar - 08 Apr	Vietnam Airlines
22 Mar - 29 Mar	Air Premia	direct
29 Mar - 14 Apr	Air Canada
26 Mar - 05 Apr	Vietnam Airlines
06 Mar - 20 Mar	Air Premia	direct
18 Mar - 08 Apr	Air Premia	direct
21 Mar - 05 Apr	United	direct
12 Mar - 24 Mar	United	direct
26 Mar - 05 Apr	United	direct
30 Mar - 04 Apr	EVA Air
29 Mar - 14 Apr	United	direct
30 Mar - 04 Apr	United	direct

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

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 March from $671

Return flights