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

Return flights

12 Sep - 17 Sep	China Southern
07 Sep - 21 Sep	Air China
15 Sep - 21 Sep	Air China
03 Sep - 10 Sep	Air China
04 Sep - 12 Sep	Air China
18 Sep - 22 Sep	Air China
21 Sep - 24 Sep	Air China
04 Sep - 25 Sep	AirAsia X
06 Sep - 12 Sep	China Southern
05 Sep - 13 Sep	China Southern
28 Sep - 27 Oct	Air China
28 Sep - 28 Oct	Air China
30 Sep - 30 Oct	Singapore Airlines
27 Sep - 02 Oct	Singapore Airlines
30 Sep - 14 Oct	AirAsia X
30 Sep - 16 Oct	AirAsia X
30 Sep - 04 Oct	AirAsia X
30 Sep - 12 Oct	AirAsia X
30 Sep - 02 Oct	AirAsia X
30 Sep - 21 Oct	AirAsia X

Also check the deals for one-way flights from Tokyo 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 Tokyo to Phnom-penh in September from 362€

Return flights