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

Return flights

29 Sep - 06 Oct	IndiGo
18 Sep - 25 Sep	IndiGo
20 Sep - 23 Sep	IndiGo
22 Sep - 26 Sep	IndiGo
17 Sep - 22 Sep	IndiGo
12 Sep - 27 Sep	IndiGo
18 Sep - 30 Sep	IndiGo
14 Sep - 26 Sep	IndiGo
12 Sep - 18 Sep	IndiGo
19 Sep - 26 Sep	flyadeal
05 Sep - 12 Sep	IndiGo
26 Sep - 04 Oct	Etihad Airways
21 Sep - 04 Oct	Etihad Airways
27 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.

Book a cheap hotel in Singapore

Cheap car rent in Singapore

Cheapest return flights from Riyadh to Singapore in September from $369

Return flights