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

Return flights

07 Sep - 14 Sep	Air China
07 Sep - 21 Sep	Air China
16 Sep - 21 Sep	Air China
12 Sep - 19 Sep	Air China
12 Sep - 18 Sep	Air China
17 Sep - 23 Sep	Air China
07 Sep - 11 Sep	Air China
04 Sep - 09 Sep	Air China
03 Sep - 10 Sep	Air China
17 Sep - 24 Sep	Emirates
30 Sep - 06 Oct	China Airlines
18 Sep - 08 Oct	China Airlines
24 Sep - 01 Oct	Air France
26 Sep - 03 Oct	Asiana Airlines	direct
25 Sep - 10 Oct	LOT
24 Sep - 04 Oct	Lufthansa
24 Sep - 01 Oct	Asiana Airlines	direct

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 629€

Return flights