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

Return flights

20 Mar - 27 Mar	Air Premia	direct
06 Mar - 22 Mar	Air Premia	direct
25 Mar - 01 Apr	Air Canada
04 Mar - 17 Mar	Air Canada
03 Mar - 17 Mar	Air Canada
11 Mar - 31 Mar	Air Canada
25 Mar - 30 Mar	Air Canada
13 Mar - 20 Mar	Air Canada
29 Mar - 06 Apr	Air Canada
13 Mar - 21 Mar	Air Canada
20 Mar - 30 Mar	Air Canada
12 Mar - 26 Mar	Cathay Pacific
26 Mar - 04 Apr	Air Canada
29 Mar - 04 Apr	Air Canada
25 Mar - 01 Apr	Air Premia	direct
28 Mar - 19 Apr	Vietnam Airlines
26 Mar - 05 Apr	Vietnam Airlines
30 Mar - 13 Apr	China Airlines
29 Mar - 05 Apr	China Airlines
26 Mar - 05 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 559€

Return flights