AirHint found the following cheapest return flights from Bangkok (DMK) to Madrid (MAD) in September 2025 (see full year).

Return flights

27 Sep - 10 Oct	Thai AirAsia
30 Sep - 07 Oct	Thai Lion Air
23 Sep - 29 Sep	Batik Air Malaysia
25 Sep - 28 Oct	Thai Lion Air
25 Sep - 21 Oct	Thai Lion Air
16 Sep - 30 Sep	Thai Lion Air
26 Sep - 11 Oct	Thai AirAsia
19 Sep - 26 Sep	AirAsia
26 Sep - 12 Oct	Batik Air Malaysia
26 Sep - 02 Oct	Batik Air Malaysia
18 Sep - 26 Sep	Indonesia AirAsia
23 Sep - 17 Oct	Thai Lion Air
19 Sep - 25 Sep	AirAsia
25 Sep - 12 Oct	Thai Lion Air
20 Sep - 27 Sep	Thai AirAsia X

Also check the deals for one-way flights from Bangkok 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 Bangkok to Madrid in September from $854

Return flights