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
18 Sep - 21 Sep	Etihad Airways
25 Sep - 29 Sep	Etihad Airways
16 Sep - 30 Sep	IndiGo
17 Sep - 25 Sep	Air India
19 Sep - 28 Sep	Air India
15 Sep - 05 Oct	Air India
30 Sep - 14 Oct	Finnair
29 Sep - 14 Oct	Finnair
17 Sep - 14 Oct	Air India
16 Sep - 24 Sep	Lufthansa
15 Sep - 12 Oct	Air India
25 Sep - 06 Oct	Etihad Airways
25 Sep - 05 Oct	Etihad Airways
24 Sep - 20 Oct	SWISS
26 Sep - 06 Oct	Etihad Airways
13 Sep - 15 Sep	IndiGo
13 Sep - 18 Sep	KLM
16 Sep - 25 Sep	Lufthansa
12 Sep - 18 Sep	KLM

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.

Book a cheap hotel in Dublin

Cheap car rent in Dublin

Cheapest return flights from Delhi to Dublin in September from 443€

Return flights