AirHint found the following cheapest return flights from Hong Kong (HKG) to Phnom-penh (PNH) in October 2025 (see full year).

Return flights

13 Oct - 18 Oct	Air Cambodia
16 Oct - 23 Oct	Cambodia Airways
16 Oct - 19 Oct	Cambodia Airways
23 Oct - 30 Oct	Cambodia Airways
12 Oct - 25 Oct	HK Express
17 Oct - 19 Oct	HK Express
13 Oct - 18 Oct	Cathay Pacific	direct
12 Oct - 26 Oct	Cathay Pacific	direct
13 Oct - 26 Oct	Cathay Pacific	direct
12 Oct - 25 Oct	Cathay Pacific	direct
17 Oct - 07 Nov	Thai AirAsia
23 Oct - 07 Nov	Thai AirAsia
28 Oct - 07 Nov	Thai AirAsia
26 Oct - 07 Nov	Thai AirAsia

Also check the deals for one-way flights from Hong Kong to Phnom-penh in October.

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 Phnom-penh in October from 184€

Return flights