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

Return flights

21 Sep - 24 Sep	AirAsia
21 Sep - 03 Oct	AirAsia
19 Sep - 24 Sep	AirAsia
22 Sep - 24 Sep	AirAsia
29 Sep - 03 Oct	AirAsia
19 Sep - 22 Sep	AirAsia
19 Sep - 03 Oct	AirAsia
21 Sep - 22 Sep	AirAsia
22 Sep - 03 Oct	AirAsia
29 Sep - 15 Oct	AirAsia
21 Sep - 04 Oct	AirAsia
22 Sep - 22 Sep	AirAsia
29 Sep - 04 Oct	AirAsia
19 Sep - 04 Oct	AirAsia
22 Sep - 04 Oct	AirAsia
21 Sep - 08 Oct	AirAsia

Also check the deals for one-way flights from Shenzhen 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 Shenzhen to Colombo in September from $593

Return flights