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

Return flights

01 Sep - 15 Sep	Pegasus Airlines
01 Sep - 01 Oct	Pegasus Airlines
05 Sep - 12 Sep	Pegasus Airlines
08 Sep - 22 Sep	Pegasus Airlines
20 Sep - 10 Oct	Aer Lingus
15 Sep - 15 Oct	Ryanair
15 Sep - 25 Sep	Ryanair
14 Sep - 29 Sep	Pegasus Airlines
20 Sep - 04 Oct	Aer Lingus
08 Sep - 20 Sep	Pegasus Airlines
20 Sep - 27 Sep	Aer Lingus
26 Sep - 05 Oct	Pegasus Airlines
10 Sep - 23 Sep	Ryanair
10 Sep - 24 Sep	Ryanair
13 Sep - 28 Sep	Ryanair
19 Sep - 02 Oct	Ryanair
19 Sep - 09 Oct	Ryanair
25 Sep - 07 Oct	Pegasus Airlines
29 Sep - 19 Oct	Dan Air
18 Sep - 03 Oct	Ryanair

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 513€

Return flights