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

Return flights

10 Sep - 28 Sep	Air China
07 Sep - 30 Sep	Japan Airlines
16 Sep - 29 Sep	Japan Airlines
15 Sep - 29 Sep	Japan Airlines
01 Sep - 30 Sep	Japan Airlines
01 Sep - 15 Sep	Japan Airlines
02 Sep - 01 Oct	Japan Airlines
02 Sep - 16 Sep	Japan Airlines
17 Sep - 26 Sep	Air China
14 Sep - 26 Sep	Air China
19 Sep - 29 Sep	Air China
12 Sep - 04 Oct	Japan Airlines
22 Sep - 06 Oct	Japan Airlines
18 Sep - 04 Oct	Japan Airlines
20 Sep - 04 Oct	Japan Airlines
21 Sep - 05 Oct	Japan Airlines
23 Sep - 08 Oct	Air China

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

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Cheapest return flights from Frankfurt to Seoul in September from 832€

Return flights