Cheapest return flights from San Francisco to Seoul in September from 609€

Best time to book flights for San Francisco (SFO) to Seoul (ICN) flights at AirHint

AirHint found the following cheapest return flights from San Francisco (SFO) to Seoul (ICN) in September 2025 (see full year).

Return flights

01 Sep - 08 Sep United direct
06 Sep - 20 Sep United direct
13 Sep - 20 Sep United direct
12 Sep - 20 Sep United direct
12 Sep - 19 Sep United direct
10 Sep - 20 Sep United direct
27 Sep - 12 Oct United direct
01 Sep - 15 Sep United direct
10 Sep - 19 Sep United direct
08 Sep - 14 Sep United direct
10 Sep - 17 Sep United direct
27 Sep - 11 Oct United direct
28 Sep - 24 Oct Korean Air direct
24 Sep - 01 Oct Air Premia
25 Sep - 04 Oct Delta
24 Sep - 01 Oct United direct

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

Skyscanner

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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