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

Return flights

18 Apr - 26 Apr	MIAT Mongolian Airlines
22 Apr - 15 May	MIAT Mongolian Airlines
18 Apr - 09 May	MIAT Mongolian Airlines
06 Apr - 27 Apr	MIAT Mongolian Airlines
14 Apr - 11 May	Lufthansa
16 Apr - 25 Apr	Aer Lingus
29 Apr - 27 May	LOT
07 Apr - 22 Apr	Finnair
14 Apr - 22 Apr	Finnair
07 Apr - 21 Apr	Finnair
13 Apr - 22 Apr	Finnair
27 Apr - 10 May	Finnair
05 Apr - 17 Apr	Ryanair
30 Apr - 19 May	Air India
02 Apr - 23 Apr	China Southern
09 Apr - 25 Apr	Lufthansa
27 Apr - 05 May	Ryanair
20 Apr - 06 May	Finnair
20 Apr - 12 May	Finnair
29 Apr - 28 May	Air India

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

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 April from 603€

Return flights