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

Return flights

17 Sep - 08 Oct	Saudia
22 Sep - 06 Oct	Saudia
27 Sep - 15 Oct	Saudia
06 Sep - 08 Oct	Saudia
22 Sep - 27 Oct	Saudia
08 Sep - 08 Oct	Saudia
10 Sep - 06 Oct	Saudia
08 Sep - 15 Oct	Saudia
10 Sep - 08 Oct	Saudia
10 Sep - 22 Oct	Saudia
01 Sep - 12 Sep	Saudia
08 Sep - 24 Sep	Saudia
17 Sep - 22 Sep	Saudia
03 Sep - 22 Sep	Saudia
22 Sep - 26 Sep	Saudia
13 Sep - 26 Sep	Saudia
10 Sep - 26 Sep	Saudia
08 Sep - 26 Sep	Saudia
13 Sep - 22 Sep	Saudia
01 Sep - 22 Sep	Saudia

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.

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Cheapest return flights from Madrid to Bangkok in September from $364

Return flights