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

Return flights

18 Sep - 27 Sep	flyadeal
22 Sep - 29 Sep	Air India
18 Sep - 26 Sep	IndiGo
07 Sep - 14 Sep	SalamAir
12 Sep - 18 Sep	IndiGo
18 Sep - 30 Sep	flyadeal
18 Sep - 22 Sep	flyadeal
02 Sep - 16 Sep	SalamAir
26 Sep - 30 Sep	Flynas
04 Sep - 12 Sep	Flynas
29 Sep - 06 Oct	Air India Express
26 Sep - 02 Oct	Air India
25 Sep - 04 Oct	China Southern

Also check the deals for one-way flights from Riyadh to Singapore in September.

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 September from 310€

Return flights