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

Return flights

27 Aug - 18 Sep	Etihad Airways
28 Aug - 18 Sep	Etihad Airways
27 Aug - 16 Sep	Etihad Airways
28 Aug - 16 Sep	Etihad Airways
26 Aug - 08 Sep	Etihad Airways
29 Aug - 28 Sep	Etihad Airways
31 Aug - 17 Sep	Etihad Airways
31 Aug - 22 Sep	Etihad Airways
31 Aug - 16 Sep	Etihad Airways
28 Aug - 20 Sep	Etihad Airways
25 Aug - 31 Aug	Ryanair
21 Aug - 31 Aug	Ryanair
06 Aug - 19 Aug	Air China
17 Aug - 24 Aug	Etihad Airways
09 Aug - 18 Aug	Air China
07 Aug - 15 Aug	Air China
07 Aug - 14 Aug	Air China
07 Aug - 19 Aug	Air China
05 Aug - 15 Aug	Air China
09 Aug - 19 Aug	Air China

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

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 August from $574

Return flights