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

Return flights

03 Aug - 10 Aug	IndiGo
23 Aug - 26 Sep	Cathay Pacific
14 Aug - 27 Aug	Flynas
23 Aug - 30 Aug	IndiGo
20 Aug - 03 Sep	Etihad Airways
11 Aug - 20 Aug	IndiGo
03 Aug - 12 Aug	IndiGo
08 Aug - 11 Aug	IndiGo
08 Aug - 15 Aug	Flynas

Also check the deals for one-way flights from Riyadh to Singapore 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 Riyadh to Singapore in August from $423

Return flights