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

Return flights

10 May - 20 May	Air China
28 May - 06 Jun	Air China
18 May - 09 Jun	Air China
27 May - 30 May	Air China
07 May - 13 May	Air China
22 May - 30 May	Air China
29 May - 07 Jun	Air China
01 May - 29 May	Air China
19 May - 18 Jun	Air China
01 May - 09 May	Air China
27 May - 04 Jun	Air China
19 May - 31 May	ANA
19 May - 26 May	ANA
12 May - 31 May	ANA
01 May - 10 May	Air China

Also check the deals for one-way flights from Seoul to Frankfurt 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 Seoul to Frankfurt in May from $827

Return flights