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

Return flights

19 Sep - 28 Sep	Pegasus Airlines
15 Sep - 15 Oct	Ryanair
22 Sep - 11 Oct	Ryanair
14 Sep - 28 Sep	Ryanair
10 Sep - 24 Sep	Ryanair
19 Sep - 09 Oct	Pegasus Airlines
18 Sep - 08 Oct	Ryanair
18 Sep - 03 Oct	Ryanair
20 Sep - 09 Oct	Pegasus Airlines
20 Sep - 10 Oct	Pegasus Airlines
21 Sep - 27 Sep	Pegasus Airlines
07 Sep - 12 Oct	Pegasus Airlines
18 Sep - 09 Oct	Ryanair
13 Sep - 28 Sep	Pegasus Airlines
08 Sep - 15 Sep	Pegasus Airlines
18 Sep - 25 Sep	Ryanair
28 Sep - 13 Oct	Ryanair
04 Sep - 17 Sep	Ryanair
12 Sep - 14 Sep	Pegasus Airlines
05 Sep - 12 Sep	Pegasus Airlines

Also check the deals for one-way flights from Dublin 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 Dublin to Colombo in September from $563

Return flights