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

Return flights

01 Dec - 10 Dec	Ryanair
01 Dec - 15 Dec	Ryanair
01 Dec - 12 Dec	Ryanair
01 Dec - 07 Dec	Ryanair
03 Dec - 16 Dec	easyJet
08 Dec - 16 Dec	T'way Air	direct
02 Dec - 07 Dec	easyJet
12 Dec - 15 Dec	T'way Air	direct
12 Dec - 16 Dec	T'way Air	direct
08 Dec - 15 Dec	T'way Air	direct
01 Dec - 10 Jan	Ryanair
01 Dec - 02 Jan	Ryanair
12 Dec - 01 Jan	T'way Air	direct
05 Dec - 04 Jan	MIAT Mongolian Airlines
08 Dec - 24 Jan	Air China
12 Dec - 08 Jan	T'way Air	direct
12 Dec - 02 Jan	T'way Air	direct
01 Dec - 04 Jan	Ryanair
05 Dec - 10 Jan	easyJet
31 Dec - 14 Jan	Pegasus Airlines

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 $577

Return flights