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

Return flights

02 Dec - 09 Dec	SalamAir
01 Dec - 04 Dec	SalamAir
01 Dec - 08 Dec	SalamAir
08 Dec - 15 Dec	SalamAir
30 Dec - 03 Jan	SalamAir
02 Dec - 05 Dec	SalamAir
31 Dec - 07 Jan	Etihad Airways
05 Dec - 07 Dec	Etihad Airways
04 Dec - 07 Dec	Thai Lion Air
01 Dec - 05 Dec	Gulf Air
07 Dec - 14 Dec	Etihad Airways
21 Dec - 31 Dec	Etihad Airways
21 Dec - 03 Jan	Etihad Airways
30 Dec - 04 Jan	Etihad Airways
29 Dec - 04 Jan	Etihad Airways
26 Dec - 05 Jan	Kuwait Airways
25 Dec - 08 Jan	IndiGo
27 Dec - 06 Jan	China Southern
26 Dec - 02 Jan	IndiGo
30 Dec - 03 Jan	Thai AirAsia X	direct

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

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Cheapest return flights from Bangkok to Riyadh in December from $360

Return flights