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

Return flights

08 Sep - 23 Sep	Etihad Airways
08 Sep - 18 Sep	ITA Airways
16 Sep - 30 Sep	KLM
15 Sep - 30 Sep	KLM
16 Sep - 28 Sep	KLM
07 Sep - 21 Sep	KLM
13 Sep - 28 Sep	Air France
06 Sep - 23 Sep	Air France
07 Sep - 28 Sep	KLM
03 Sep - 14 Sep	ITA Airways
15 Sep - 02 Oct	ITA Airways
19 Sep - 03 Oct	China Eastern
28 Sep - 08 Oct	Qatar Airways
27 Sep - 08 Oct	Saudia
25 Sep - 08 Oct	Iberia

Also check the deals for one-way flights from Madrid to Bangkok 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 Bangkok

Cheap car rent in Bangkok

Cheapest return flights from Madrid to Bangkok in September from 500€

Return flights