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

Return flights

07 Sep - 08 Sep	Thai AirAsia
01 Sep - 08 Sep	Thai AirAsia
19 Sep - 20 Sep	Thai AirAsia
07 Sep - 20 Sep	Thai AirAsia
01 Sep - 20 Sep	Thai AirAsia
19 Sep - 24 Sep	Thai AirAsia
07 Sep - 24 Sep	Thai AirAsia
01 Sep - 01 Sep	Thai AirAsia
04 Sep - 08 Sep	Thai AirAsia
04 Sep - 20 Sep	Thai AirAsia
19 Sep - 05 Oct	Thai AirAsia
24 Sep - 05 Oct	Thai AirAsia
26 Sep - 05 Oct	Thai AirAsia
27 Sep - 05 Oct	Thai AirAsia

Also check the deals for one-way flights from Kolkata 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 Kolkata to Phnom-penh in September from 241€

Return flights