AirHint found the following cheapest return flights from Seoul (ICN) to Frankfurt (FRA) in September 2026 (see full year).

Return flights

02 Sep - 16 Sep	Lufthansa
14 Sep - 21 Sep	Lufthansa
02 Sep - 06 Sep	Lufthansa	direct
11 Sep - 14 Sep	Air China
09 Sep - 23 Sep	Air China
17 Sep - 29 Oct	Lufthansa	direct
02 Sep - 31 Oct	Air China
06 Sep - 12 Sep	Air China
06 Sep - 13 Sep	Air China
24 Sep - 09 Oct	Air Astana
27 Sep - 10 Oct	Air Astana
24 Sep - 03 Oct	Air Astana
19 Sep - 25 Sep	Air Astana
25 Sep - 29 Sep	Air Astana
23 Sep - 29 Sep	Air Astana
24 Sep - 10 Oct	Air Astana
25 Sep - 09 Oct	Air Astana
23 Sep - 03 Oct	Air Astana
24 Sep - 04 Oct	Air Astana
23 Sep - 04 Oct	Air Astana

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

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Cheapest return flights from Seoul to Frankfurt in September from 569€

Return flights