Cheapest return flights from Seoul to San Francisco in September from $450

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

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

Return flights

21 Sep - 28 Sep Air Premia direct
19 Sep - 24 Sep Air Premia direct
19 Sep - 26 Sep Air Premia direct
24 Sep - 26 Sep Air Premia direct
12 Sep - 22 Sep Air Premia direct
17 Sep - 19 Sep Air Premia direct
22 Sep - 26 Sep Air Premia direct
17 Sep - 21 Sep Air Premia direct
15 Sep - 22 Sep Air Premia direct
12 Sep - 19 Sep Air Premia direct
24 Sep - 01 Oct United direct
25 Sep - 04 Oct United direct
22 Sep - 02 Oct United direct
10 Sep - 01 Oct Delta
24 Sep - 22 Oct Delta direct
26 Sep - 03 Oct Air Premia direct
29 Sep - 12 Oct Philippine Airlines
25 Sep - 11 Oct Philippine Airlines
03 Sep - 29 Oct Delta direct
30 Sep - 14 Oct Philippine Airlines

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

Book a cheap hotel in San Francisco

Cheap car rent in San Francisco