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

Return flights

25 Sep - 04 Oct	AirAsia
19 Sep - 26 Sep	Thai AirAsia
25 Sep - 12 Oct	Thai AirAsia
25 Sep - 03 Oct	Thai AirAsia
25 Sep - 11 Oct	Thai AirAsia
25 Sep - 30 Sep	Thai AirAsia
20 Sep - 27 Sep	Thai AirAsia
25 Sep - 13 Oct	Thai AirAsia
29 Sep - 14 Oct	VietJet Air
25 Sep - 27 Sep	Thai AirAsia
25 Sep - 06 Oct	Thai AirAsia
25 Sep - 14 Oct	Thai AirAsia
29 Sep - 03 Oct	Thai AirAsia
27 Sep - 03 Oct	Thai AirAsia
29 Sep - 30 Sep	Thai AirAsia
25 Sep - 28 Sep	Thai AirAsia
27 Sep - 30 Sep	Thai AirAsia
27 Sep - 28 Sep	Thai AirAsia
20 Sep - 30 Sep	Thai AirAsia
23 Sep - 30 Sep	AirAsia

Also check the deals for one-way flights from Hanoi 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 Hanoi to Colombo in September from 247€

Return flights