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

Return flights

31 Dec - 15 Jan	Ryanair
30 Dec - 21 Jan	Ryanair
31 Dec - 21 Jan	T'way Air
31 Dec - 14 Jan	T'way Air
29 Dec - 14 Jan	T'way Air
29 Dec - 26 Jan	T'way Air
31 Dec - 17 Jan	T'way Air
29 Dec - 15 Jan	T'way Air
31 Dec - 21 Jan	T'way Air	direct
30 Dec - 20 Jan	AJet
25 Dec - 31 Dec	Scandinavian Airlines
24 Dec - 28 Dec	Ryanair
24 Dec - 30 Dec	Ryanair
25 Dec - 30 Dec	Asiana Airlines	direct
27 Dec - 30 Dec	T'way Air
27 Dec - 29 Dec	T'way Air
24 Dec - 29 Dec	Ryanair
26 Dec - 28 Dec	KLM
24 Dec - 31 Dec	Ryanair
27 Dec - 30 Dec	T'way Air	direct

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 $619

Return flights