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

Return flights

13 Apr - 20 Apr	Air China
15 Apr - 22 Apr	Air China
12 Apr - 19 Apr	Air China
01 Apr - 17 Apr	Air China
13 Apr - 22 Apr	Air China
16 Apr - 23 Apr	Air China
22 Apr - 26 Apr	Air China
16 Apr - 19 Apr	Air China
02 Apr - 06 Apr	Air China
02 Apr - 10 Apr	Air China
26 Apr - 01 May	Air China
30 Apr - 05 May	Vietnam Airlines
26 Apr - 02 May	Vietnam Airlines
29 Apr - 06 May	Vietnam Airlines
29 Apr - 09 May	Vietnam Airlines
25 Apr - 09 May	Vietnam Airlines
17 Apr - 02 May	Air China
28 Apr - 05 May	Lufthansa	direct
30 Apr - 07 May	Air China
18 Apr - 02 May	Air China

Also check the deals for one-way flights from Seoul to Frankfurt 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 Seoul to Frankfurt in April from 500€

Return flights