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

Return flights

07 Sep - 20 Sep	Air China
12 Sep - 22 Sep	Air China
16 Sep - 29 Sep	Air China
17 Sep - 25 Sep	Air China
04 Sep - 15 Sep	Air China
15 Sep - 22 Sep	Air China
14 Sep - 18 Sep	Air China
06 Sep - 22 Sep	Air China
03 Sep - 08 Sep	Air China
06 Sep - 13 Sep	Air China
04 Sep - 02 Oct	Air China
03 Sep - 02 Oct	Air China
28 Sep - 27 Oct	Etihad Airways
29 Sep - 13 Oct	Etihad Airways
16 Sep - 06 Oct	Air China
28 Sep - 12 Oct	Etihad Airways
30 Sep - 11 Oct	Etihad Airways
28 Sep - 07 Oct	Emirates
21 Sep - 04 Oct	Air China
27 Sep - 08 Oct	Finnair

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 522€

Return flights