AirHint found the following cheapest return flights from Seoul (ICN) to Frankfurt (FRA) in December 2025 (see full year).

Return flights

01 Dec - 05 Dec	T'way Air	direct
01 Dec - 08 Dec	T'way Air	direct
13 Dec - 15 Dec	LOT
18 Dec - 30 Dec	Air China
04 Dec - 16 Dec	Air China
04 Dec - 07 Dec	Air China
01 Dec - 07 Dec	Air China
18 Dec - 13 Jan	Air China
15 Dec - 06 Jan	Air China
18 Dec - 06 Jan	Air China
18 Dec - 04 Jan	Air China
15 Dec - 30 Dec	Air China
01 Dec - 09 Dec	Air China
08 Dec - 23 Dec	Air China
22 Dec - 13 Jan	Air China
22 Dec - 06 Jan	Air China
25 Dec - 20 Jan	Air China
25 Dec - 04 Jan	Air China
22 Dec - 04 Jan	Air China
27 Dec - 06 Jan	Air China

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

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.

Book a cheap hotel in Frankfurt

Cheap car rent in Frankfurt

Cheapest return flights from Seoul to Frankfurt in December from $546

Return flights