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

Return flights

19 Sep - 02 Oct	AirAsia
19 Sep - 23 Sep	AirAsia
19 Sep - 24 Sep	AirAsia
18 Sep - 02 Oct	AirAsia
21 Sep - 02 Oct	AirAsia
18 Sep - 23 Sep	AirAsia
18 Sep - 24 Sep	AirAsia
21 Sep - 23 Sep	AirAsia
21 Sep - 24 Sep	AirAsia
19 Sep - 21 Sep	AirAsia
18 Sep - 21 Sep	AirAsia
21 Sep - 21 Sep	AirAsia

Also check the deals for one-way flights from Penang 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 Penang to Phnom-penh in September from 261€

Return flights