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

Return flights

04 Sep - 11 Sep	Air India
29 Sep - 04 Oct	Air India
18 Sep - 30 Sep	Air India
05 Sep - 11 Sep	Air India
11 Sep - 14 Sep	Air India
23 Sep - 30 Sep	Air India
08 Sep - 18 Sep	Air India
25 Sep - 02 Oct	Air India
10 Sep - 18 Sep	Air India
05 Sep - 19 Sep	Air India
25 Sep - 30 Sep	Air India
01 Sep - 30 Sep	Air India
30 Sep - 05 Oct	Air India
26 Sep - 05 Oct	Air India
25 Sep - 03 Oct	Air India
26 Sep - 03 Oct	Air India
24 Sep - 04 Oct	Air India
30 Sep - 07 Oct	Air India
10 Sep - 18 Oct	Singapore Airlines
28 Sep - 07 Oct	IndiGo

Also check the deals for one-way flights from Dhaka 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 Dhaka to Colombo in September from 235€

Return flights