Cheapest return flights from San Francisco to Seoul in September from $639
AirHint found the following cheapest return flights from San Francisco (SFO) to Seoul (ICN)
in September 2025 (see full year ).
Return flights
17 Sep
- 24 Sep
Air Premia
$ 639
direct
21 Sep
- 19 Oct
Air Premia
$ 639
direct
29 Sep
- 13 Oct
Air Premia
$ 640
direct
27 Sep
- 18 Oct
Hawaiian Airlines
$ 653
22 Sep
- 27 Oct
Air Premia
$ 654
direct
20 Sep
- 18 Oct
Alaska Airlines
$ 654
24 Sep
- 15 Oct
Air Premia
$ 654
direct
23 Sep
- 31 Oct
Alaska Airlines
$ 659
16 Sep
- 20 Sep
United
$ 660
direct
25 Sep
- 24 Oct
Hawaiian Airlines
$ 660
17 Sep
- 10 Oct
United
$ 660
direct
21 Sep
- 26 Sep
United
$ 661
direct
17 Sep
- 14 Oct
United
$ 661
direct
19 Sep
- 24 Sep
Air Premia
$ 695
direct
19 Sep
- 28 Sep
Air Premia
$ 720
direct
22 Sep
- 29 Sep
Air Premia
$ 730
direct
22 Sep
- 30 Sep
United
$ 774
direct
21 Sep
- 29 Sep
United
$ 774
direct
21 Sep
- 27 Sep
Air Premia
$ 801
19 Sep
- 25 Sep
Air Premia
$ 802
Also check the deals for one-way flights from San Francisco to Seoul in September .
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.
Find us on social media
Feel free to contact us with any feedback or request another flight research.
Find us on social media