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

Return flights

11 Dec - 07 Jan	Air China
11 Dec - 01 Jan	Air China
29 Dec - 19 Jan	Air China
29 Dec - 04 Jan	Air China
29 Dec - 05 Jan	Air China
29 Dec - 26 Jan	Air China
29 Dec - 06 Jan	Air China
17 Dec - 07 Jan	Air China
08 Dec - 06 Jan	Air China
13 Dec - 07 Jan	Air China
11 Dec - 15 Dec	Air China
17 Dec - 26 Dec	Air China
17 Dec - 22 Dec	Air China
09 Dec - 23 Dec	Air China
17 Dec - 24 Dec	Air China
11 Dec - 24 Dec	Air China
18 Dec - 31 Dec	Air China
22 Dec - 31 Dec	Eastar Jet
13 Dec - 22 Dec	Air China
16 Dec - 23 Dec	Air China

Also check the deals for one-way flights from Seoul to Frankfurt 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 Seoul to Frankfurt in December from 429€

Return flights