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

Return flights

05 Sep - 10 Sep	Lufthansa
03 Sep - 15 Sep	SWISS
05 Sep - 15 Sep	Lufthansa
01 Sep - 08 Sep	Lufthansa
24 Sep - 02 Oct	Lufthansa
27 Sep - 30 Sep	Lufthansa
26 Sep - 30 Sep	Lufthansa
27 Sep - 02 Oct	Lufthansa
25 Sep - 02 Oct	Lufthansa
04 Sep - 15 Sep	SWISS
26 Sep - 02 Oct	Lufthansa
03 Sep - 14 Sep	KLM
04 Sep - 14 Sep	KLM
05 Sep - 14 Sep	KLM
24 Sep - 11 Oct	Vueling Airlines
25 Sep - 11 Oct	Vueling Airlines
26 Sep - 11 Oct	Vueling Airlines

Also check the deals for one-way flights from Hannover 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 Hannover to Dublin in September from $185

Return flights