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

Return flights

10 Sep - 18 Sep	Air China
03 Sep - 02 Oct	Air China
01 Sep - 30 Sep	Air China
04 Sep - 15 Sep	Air China
06 Sep - 17 Sep	Air China
24 Sep - 04 Oct	Air China
28 Sep - 08 Oct	Air China
29 Sep - 09 Oct	Air China
27 Sep - 06 Oct	Air China
29 Sep - 08 Oct	Air China
30 Sep - 09 Oct	Air China
10 Sep - 20 Sep	Air China
21 Sep - 01 Oct	Japan Airlines
19 Sep - 26 Sep	Japan Airlines
19 Sep - 28 Sep	Japan Airlines
22 Sep - 03 Oct	Air China
14 Sep - 27 Sep	Air China
14 Sep - 25 Sep	Air China
15 Sep - 25 Sep	Air China
22 Sep - 02 Oct	Air China

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 $745

Return flights