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

Return flights

05 Dec - 07 Dec	China Eastern
17 Dec - 04 Jan	Air China
03 Dec - 08 Dec	Air China
12 Dec - 03 Jan	Air China
30 Dec - 08 Jan	Air China
17 Dec - 08 Jan	Air China
17 Dec - 12 Jan	Air China
18 Dec - 04 Jan	Air China
26 Dec - 09 Jan	Air China
18 Dec - 01 Jan	Air China
29 Dec - 04 Jan	Air China
05 Dec - 09 Dec	Air China
22 Dec - 06 Jan	Air China
03 Dec - 05 Dec	Air China
07 Dec - 08 Dec	Air China
18 Dec - 31 Dec	Air China
01 Dec - 08 Dec	Air China
24 Dec - 31 Dec	Air China
25 Dec - 31 Dec	Air China
18 Dec - 27 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 $493

Return flights