AirHint found the following cheapest return flights from Hong Kong (HKG) to Colombo (CMB) in September 2025 (see full year).

Return flights

01 Sep - 05 Sep	China Eastern
24 Sep - 28 Sep	HK Express
11 Sep - 23 Sep	AirAsia
11 Sep - 15 Sep	AirAsia
11 Sep - 19 Sep	AirAsia
15 Sep - 23 Sep	AirAsia
11 Sep - 14 Sep	AirAsia
15 Sep - 19 Sep	AirAsia
11 Sep - 12 Sep	AirAsia
11 Sep - 22 Sep	AirAsia
28 Sep - 08 Oct	Greater Bay Airlines
30 Sep - 08 Oct	Cathay Pacific
30 Sep - 06 Oct	Cathay Pacific
26 Sep - 15 Oct	AirAsia
26 Sep - 16 Oct	AirAsia
30 Sep - 07 Oct	Thai Lion Air
22 Sep - 07 Oct	AirAsia
22 Sep - 08 Oct	AirAsia
20 Sep - 07 Oct	AirAsia
24 Sep - 15 Oct	AirAsia

Also check the deals for one-way flights from Hong Kong to Colombo 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 Hong Kong to Colombo in September from 298€

Return flights