AirHint found the following cheapest return flights from Riyadh (RUH) to Singapore (SIN) in December 2025 (see full year).
Return flights
| 31 Dec - 07 Jan | IndiGo | ||
| 27 Dec - 10 Jan | Flynas | ||
| 30 Dec - 06 Jan | IndiGo | ||
| 30 Dec - 03 Jan | Air India |
Also check the deals for one-way flights from Riyadh to Singapore in December.
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