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

Return flights

11 Dec - 08 Jan	Air France
02 Dec - 10 Dec	Air France
04 Dec - 08 Dec	Air France
03 Dec - 11 Dec	Air France
04 Dec - 11 Dec	Air France
17 Dec - 14 Jan	Air France
13 Dec - 04 Jan	Air France
08 Dec - 11 Dec	Air France
02 Dec - 09 Dec	Air France
17 Dec - 07 Jan	Air France
01 Dec - 09 Dec	Air France
01 Dec - 13 Dec	Air France
01 Dec - 10 Dec	Air France
04 Dec - 08 Dec	Lufthansa	direct
25 Dec - 06 Jan	Lufthansa	direct
25 Dec - 08 Jan	Lufthansa	direct
09 Dec - 06 Jan	Lufthansa	direct
11 Dec - 08 Jan	Lufthansa	direct
15 Dec - 05 Jan	Lufthansa	direct
25 Dec - 01 Jan	Lufthansa	direct

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 487€

Return flights