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

Return flights

11 Sep - 20 Sep	China Southern
11 Sep - 23 Sep	China Southern
09 Sep - 23 Sep	China Southern
18 Sep - 26 Sep	Air India
06 Sep - 17 Sep	China Southern
14 Sep - 23 Sep	Etihad Airways
01 Sep - 11 Sep	Etihad Airways
05 Sep - 16 Sep	Etihad Airways
01 Sep - 15 Sep	Etihad Airways
07 Sep - 21 Sep	Air India
26 Sep - 07 Oct	Kuwait Airways
18 Sep - 02 Oct	Kuwait Airways
23 Sep - 10 Oct	China Southern
19 Sep - 05 Oct	Kuwait Airways
18 Sep - 03 Oct	China Southern

Also check the deals for one-way flights from Riyadh to Hanoi 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 Hanoi in September from $445

Return flights