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

Return flights

21 Sep - 02 Oct	China Eastern
18 Sep - 23 Sep	China Eastern
16 Sep - 19 Sep	China Eastern
19 Sep - 23 Sep	China Eastern
25 Sep - 02 Oct	AirAsia
18 Sep - 25 Sep	China Eastern
16 Sep - 23 Sep	China Eastern
24 Sep - 29 Sep	AirAsia
20 Sep - 27 Sep	China Eastern
18 Sep - 24 Sep	China Eastern
26 Sep - 01 Oct	HK Express
22 Sep - 26 Sep	AirAsia
22 Sep - 27 Sep	AirAsia
22 Sep - 01 Oct	AirAsia
22 Sep - 02 Oct	AirAsia
22 Sep - 12 Oct	AirAsia
30 Sep - 07 Oct	HK Express
27 Sep - 02 Oct	HK Express
27 Sep - 04 Oct	Thai AirAsia
29 Sep - 12 Oct	VietJet Air

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 269€

Return flights