AirHint found the following cheapest return flights from Frankfurt (FRA) to Seoul (ICN) in January 2026 (see full year).

Return flights

08 Jan - 20 Jan	Ryanair
08 Jan - 21 Jan	Ryanair
08 Jan - 28 Jan	Ryanair
15 Jan - 28 Jan	Ryanair
08 Jan - 19 Jan	Ryanair
08 Jan - 23 Jan	Ryanair
15 Jan - 25 Jan	Ryanair
15 Jan - 30 Jan	Ryanair
12 Jan - 19 Jan	T'way Air
18 Jan - 09 Feb	T'way Air	direct
18 Jan - 23 Feb	T'way Air	direct
26 Jan - 27 Feb	Ryanair
08 Jan - 22 Jan	Ryanair
27 Jan - 06 Feb	Ryanair
22 Jan - 08 Feb	China Southern
18 Jan - 27 Feb	Scandinavian Airlines
25 Jan - 27 Feb	Scandinavian Airlines
18 Jan - 02 Feb	Scandinavian Airlines
22 Jan - 06 Feb	Scandinavian Airlines
13 Jan - 27 Feb	Scandinavian Airlines

Also check the deals for one-way flights from Frankfurt to Seoul in January.

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 January from 382€

Return flights