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
11 Sep - 18 Sep	Air China
09 Sep - 13 Oct	Air China
04 Sep - 17 Sep	Air China
02 Sep - 09 Sep	Air China
03 Sep - 10 Sep	Air China
07 Sep - 23 Sep	Air China
12 Sep - 19 Sep	Air China
07 Sep - 20 Sep	Air China
04 Sep - 11 Sep	Air China
13 Sep - 20 Sep	Air China
11 Sep - 15 Oct	Air China
28 Sep - 11 Oct	Air China
27 Sep - 04 Oct	Air China
28 Sep - 05 Oct	Air China
18 Sep - 08 Oct	Air China
30 Sep - 09 Oct	Air China
08 Sep - 08 Oct	Air China
24 Sep - 03 Oct	Japan Airlines
24 Sep - 10 Oct	Japan Airlines

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.

Book a cheap hotel in Madrid

Cheap car rent in Madrid

Cheapest return flights from Seoul to Madrid in September from $749

Return flights