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

Return flights

12 May - 26 May	Wizz Air Malta
25 May - 07 Jun	Air China
11 May - 17 May	Air China
05 May - 26 May	Air India
12 May - 19 May	Air India
28 May - 04 Jun	Air China
22 May - 07 Jun	Air China
27 May - 03 Jun	Air China
14 May - 04 Jun	Air China
13 May - 04 Jun	Air China
25 May - 14 Jun	Air China
03 May - 17 May	Air China
14 May - 29 May	Air China
13 May - 29 May	Air China
15 May - 26 Jun	Air China
13 May - 23 May	Air China
12 May - 22 May	Air China
13 May - 20 May	Air China
25 May - 08 Jun	Air China
21 May - 01 Jun	Air China

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

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 May from $643

Return flights