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

Return flights

29 Sep - 07 Oct	IndiGo
02 Sep - 09 Sep	Air India
18 Sep - 22 Sep	US-Bangla Airlines
24 Sep - 27 Sep	Air India
27 Sep - 01 Oct	IndiGo
26 Sep - 30 Sep	Air India
23 Sep - 30 Sep	Air India
06 Sep - 30 Sep	IndiGo
26 Sep - 30 Oct	IndiGo
08 Sep - 22 Sep	IndiGo
08 Sep - 23 Sep	IndiGo
14 Sep - 18 Sep	IndiGo
09 Sep - 16 Sep	IndiGo
26 Sep - 02 Oct	Air India
29 Sep - 03 Oct	Air India
26 Sep - 03 Oct	Air India
26 Sep - 08 Oct	IndiGo
29 Sep - 04 Oct	Air India
25 Sep - 04 Oct	Air India
30 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 $318

Return flights