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

Return flights

26 Sep - 26 Oct	Etihad Airways
16 Sep - 30 Sep	IndiGo
16 Sep - 23 Sep	IndiGo
25 Sep - 29 Sep	Etihad Airways
15 Sep - 05 Oct	Air India
30 Sep - 14 Oct	Finnair
22 Sep - 23 Oct	IndiGo
27 Sep - 04 Oct	Finnair
15 Sep - 18 Sep	Air India
15 Sep - 22 Sep	Air India
15 Sep - 03 Oct	Air India
17 Sep - 14 Oct	Air India
18 Sep - 26 Sep	Air India
15 Sep - 12 Oct	Air India
25 Sep - 06 Oct	Etihad Airways
25 Sep - 05 Oct	Etihad Airways
13 Sep - 15 Sep	IndiGo
20 Sep - 23 Sep	EgyptAir
14 Sep - 21 Sep	Air India
13 Sep - 20 Sep	IndiGo

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 $520

Return flights