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

Return flights

02 Sep - 07 Sep	AirAsia Cambodia
05 Sep - 15 Sep	Vietnam Airlines
21 Sep - 23 Sep	Singapore Airlines
21 Sep - 28 Sep	Singapore Airlines
21 Sep - 04 Oct	Singapore Airlines
15 Sep - 19 Sep	Singapore Airlines
21 Sep - 24 Sep	Singapore Airlines
13 Sep - 30 Sep	Singapore Airlines
01 Sep - 12 Sep	Singapore Airlines
29 Sep - 06 Oct	Singapore Airlines
06 Sep - 16 Sep	Singapore Airlines
04 Sep - 07 Sep	AirAsia Cambodia
06 Sep - 04 Oct	AirAsia Cambodia

Also check the deals for one-way flights from Phnom-penh to Manila 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 Phnom-penh to Manila in September from 231€

Return flights