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

Return flights

01 Dec - 08 Dec	T'way Air	direct
01 Dec - 05 Dec	T'way Air	direct
05 Dec - 10 Dec	T'way Air	direct
17 Dec - 21 Jan	T'way Air	direct
12 Dec - 16 Jan	T'way Air	direct
12 Dec - 15 Jan	T'way Air	direct
03 Dec - 08 Dec	T'way Air	direct
10 Dec - 14 Jan	T'way Air	direct
18 Dec - 04 Jan	Air China
04 Dec - 11 Dec	China Eastern
15 Dec - 23 Dec	Air China
08 Dec - 14 Dec	Air China
04 Dec - 07 Dec	Air China
18 Dec - 30 Dec	Air China
18 Dec - 23 Dec	Air China
15 Dec - 04 Jan	Air China
26 Dec - 01 Jan	Air France
26 Dec - 29 Jan	Air France
26 Dec - 15 Jan	Air France
26 Dec - 09 Jan	Air France

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 457€

Return flights