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

Return flights

29 Sep - 06 Oct	Saudia
21 Sep - 04 Oct	Kuwait Airways
08 Sep - 15 Sep	Etihad Airways
20 Sep - 27 Sep	Finnair
15 Sep - 30 Sep	Finnair
24 Sep - 07 Oct	Finnair
24 Sep - 13 Oct	Finnair
13 Sep - 20 Sep	Finnair
12 Sep - 20 Sep	Saudia
18 Sep - 25 Sep	Finnair
08 Sep - 21 Sep	Finnair
05 Sep - 07 Oct	Air India
08 Sep - 20 Oct	Finnair
26 Sep - 03 Oct	Finnair
10 Sep - 09 Oct	Finnair
11 Sep - 07 Oct	Finnair
06 Sep - 13 Sep	Finnair
06 Sep - 17 Sep	Finnair
21 Sep - 29 Sep	IndiGo
06 Sep - 14 Oct	Finnair

Also check the deals for one-way flights from Delhi to Dublin 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 Delhi to Dublin in September from 410€

Return flights