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

Return flights

18 Dec - 27 Dec	Etihad Airways
22 Dec - 09 Jan	Etihad Airways
10 Dec - 19 Dec	Etihad Airways
18 Dec - 03 Jan	Etihad Airways
19 Dec - 03 Jan	Etihad Airways
26 Dec - 02 Jan	Biman Bangladesh Airlines
14 Dec - 04 Jan	Thai AirAsia X
14 Dec - 03 Jan	Thai AirAsia X
07 Dec - 27 Dec	Thai AirAsia X
07 Dec - 25 Dec	Thai AirAsia X
14 Dec - 27 Dec	Thai AirAsia X
14 Dec - 25 Dec	Thai AirAsia X

Also check the deals for one-way flights from Riyadh to Singapore 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 Riyadh to Singapore in December from 454€

Return flights