Cheapest return flights from Cologne to Seoul in September from $946

Best time to book flights for Cologne (CGN) to Seoul (ICN) flights at AirHint

AirHint found the following cheapest return flights from Cologne (CGN) to Seoul (ICN) in September 2025 (see full year).

Return flights

04 Sep - 18 Sep Lufthansa
15 Sep - 22 Sep Turkish Airlines
26 Sep - 11 Oct Turkish Airlines
09 Sep - 22 Sep Turkish Airlines
26 Sep - 12 Oct Turkish Airlines
13 Sep - 22 Sep Turkish Airlines
03 Sep - 11 Sep Lufthansa
03 Sep - 19 Oct Turkish Airlines
01 Sep - 21 Sep Lufthansa
14 Sep - 21 Sep Lufthansa
18 Sep - 25 Sep Eurowings
12 Sep - 21 Sep Eurowings
11 Sep - 01 Oct Eurowings

Also check the deals for one-way flights from Cologne to Seoul in September.

Skyscanner

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 Seoul

Cheap car rent in Seoul