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

Return flights

04 Dec - 15 Dec	Etihad Airways
04 Dec - 16 Dec	Etihad Airways
07 Dec - 21 Dec	Etihad Airways
03 Dec - 17 Dec	Etihad Airways
02 Dec - 17 Dec	Etihad Airways
04 Dec - 22 Dec	Etihad Airways
07 Dec - 15 Dec	Etihad Airways
03 Dec - 15 Dec	Etihad Airways
02 Dec - 09 Dec	Etihad Airways
02 Dec - 22 Dec	Etihad Airways
07 Dec - 30 Jan	Iberia
07 Dec - 30 Jan	Iberojet	direct
09 Dec - 19 Jan	Pegasus Airlines
30 Dec - 19 Jan	Saudia
09 Dec - 06 Jan	Air China
01 Dec - 09 Jan	Air China
06 Dec - 01 Jan	Air China
09 Dec - 13 Jan	Pegasus Airlines
11 Dec - 09 Jan	Saudia
11 Dec - 12 Jan	Saudia

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

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 December from $592

Return flights