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

Return flights

01 Dec - 07 Dec	Ryanair
01 Dec - 10 Dec	Ryanair
01 Dec - 08 Dec	Ryanair
01 Dec - 12 Dec	Ryanair
01 Dec - 15 Dec	Ryanair
06 Dec - 15 Dec	Ryanair
12 Dec - 16 Dec	T'way Air	direct
03 Dec - 16 Dec	easyJet
03 Dec - 17 Dec	easyJet
04 Dec - 18 Dec	Ryanair
24 Dec - 02 Jan	Ryanair
08 Dec - 08 Jan	Ryanair
09 Dec - 20 Jan	easyJet
31 Dec - 14 Jan	Pegasus Airlines
31 Dec - 21 Jan	Pegasus Airlines
15 Dec - 15 Jan	Air China
12 Dec - 01 Jan	T'way Air	direct
15 Dec - 31 Jan	Air China
08 Dec - 08 Jan	T'way Air	direct
12 Dec - 02 Jan	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 491€

Return flights