AirHint found the following cheapest return flights from Phnom-penh (PNH) to Colombo (CMB) in July 2025 (see full year).

Return flights

31 Jul - 07 Aug	Thai AirAsia
31 Jul - 20 Aug	Thai AirAsia
31 Jul - 18 Aug	Thai AirAsia
31 Jul - 03 Aug	Thai AirAsia
30 Jul - 06 Aug	AirAsia Cambodia
31 Jul - 01 Aug	Thai AirAsia
31 Jul - 13 Aug	Thai AirAsia
31 Jul - 02 Aug	Thai AirAsia
31 Jul - 06 Aug	Thai AirAsia
31 Jul - 10 Aug	Thai AirAsia
29 Jul - 31 Jul	AirAsia Cambodia
30 Jul - 31 Jul	AirAsia Cambodia
29 Jul - 30 Jul	AirAsia Cambodia
28 Jul - 31 Jul	AirAsia Cambodia
28 Jul - 30 Jul	AirAsia Cambodia
27 Jul - 31 Jul	AirAsia Cambodia
27 Jul - 30 Jul	AirAsia Cambodia

Also check the deals for one-way flights from Phnom-penh to Colombo in July.

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 Colombo in July from 339€

Return flights