AirHint found the following cheapest return flights from Rome (ROM) to Phnom-penh (PNH) in September 2025 (see full year).

Return flights

15 Sep - 29 Sep	Air China
10 Sep - 24 Sep	Etihad Airways
26 Sep - 07 Oct	Sichuan Airlines
15 Sep - 30 Sep	Etihad Airways
09 Sep - 23 Sep	Etihad Airways
05 Sep - 20 Sep	Sichuan Airlines
08 Sep - 23 Sep	Saudia
07 Sep - 21 Sep	Etihad Airways
08 Sep - 22 Sep	Hainan Airlines
02 Sep - 03 Sep	Etihad Airways

Also check the deals for one-way flights from Rome to Phnom-penh 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 Rome to Phnom-penh in September from $764

Return flights