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

Return flights

04 Sep - 11 Sep	Air India
07 Sep - 14 Sep	Air India
04 Sep - 07 Sep	Air India
05 Sep - 08 Sep	HK Express
08 Sep - 15 Sep	Hainan Airlines
15 Sep - 22 Sep	Hainan Airlines
18 Sep - 06 Oct	HK Express
04 Sep - 11 Sep	Cathay Pacific	direct
08 Sep - 15 Sep	Cathay Pacific	direct
05 Sep - 08 Sep	Cathay Pacific	direct
15 Sep - 22 Sep	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.

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Cheapest return flights from Hong Kong to Riyadh in September from 327€

Return flights