AirHint found the following cheapest return flights from Frankfurt (FRA) to Seoul (ICN) in December 2025 (see full year).

Return flights

01 Dec - 18 Dec	Air China
09 Dec - 17 Dec	Air China
06 Dec - 28 Dec	Air China
02 Dec - 07 Dec	Air China
05 Dec - 10 Dec	Air China
08 Dec - 16 Dec	Air China
05 Dec - 16 Dec	Air China
30 Dec - 23 Jan	China Southern
05 Dec - 17 Dec	Air China
06 Dec - 14 Dec	Ryanair
02 Dec - 10 Dec	Ryanair
01 Dec - 29 Jan	Air China
05 Dec - 14 Jan	Air China
03 Dec - 21 Jan	Air China
30 Dec - 21 Jan	China Southern
30 Dec - 30 Jan	China Eastern
01 Dec - 15 Jan	Ryanair
29 Dec - 22 Jan	Ryanair
10 Dec - 28 Jan	Air France
30 Dec - 13 Jan	Ryanair

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

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 December from 445€

Return flights