AirHint found the following cheapest return flights from Seoul (ICN) to Madrid (MAD) in September 2026 (see full year).

Return flights

09 Sep - 20 Sep	Air China
09 Sep - 18 Sep	Air China
14 Sep - 25 Sep	Air China
01 Sep - 08 Sep	Air China
13 Sep - 22 Sep	Air China
01 Sep - 10 Sep	Air China
17 Sep - 25 Sep	Air China
13 Sep - 20 Sep	Air China
10 Sep - 18 Sep	Air China
06 Sep - 13 Sep	Air China
17 Sep - 02 Oct	Air China
30 Sep - 07 Oct	Qatar Airways
15 Sep - 01 Oct	Finnair
23 Sep - 07 Oct	Air China
22 Sep - 02 Oct	KLM
27 Sep - 04 Oct	Air China
17 Sep - 09 Oct	Emirates
27 Sep - 09 Oct	Finnair
26 Sep - 04 Oct	Finnair
20 Sep - 02 Oct	Emirates

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

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 Madrid in September from 528€

Return flights