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

Return flights

14 Sep - 21 Sep	Air India
25 Sep - 04 Oct	Air India
14 Sep - 18 Sep	Air India
13 Sep - 18 Sep	Air India
18 Sep - 25 Sep	Air India
23 Sep - 03 Oct	IndiGo
15 Sep - 22 Sep	Air India
24 Sep - 03 Oct	HK Express
25 Sep - 03 Oct	Air India
18 Sep - 06 Oct	Air India
22 Sep - 27 Sep	Thai Lion Air
22 Sep - 26 Sep	Thai AirAsia
15 Sep - 18 Sep	IndiGo
15 Sep - 19 Sep	Air India
04 Sep - 18 Sep	Hainan Airlines
25 Sep - 03 Oct	Cathay Pacific	direct
25 Sep - 04 Oct	Cathay Pacific	direct

Also check the deals for one-way flights from Hong Kong to Riyadh 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 Riyadh

Cheap car rent in Riyadh

Cheapest return flights from Hong Kong to Riyadh in September from $434

Return flights