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

Return flights

27 Sep - 04 Oct	SWISS
17 Sep - 24 Sep	Delta
16 Sep - 03 Oct	Delta
22 Sep - 06 Oct	Aer Lingus	direct
29 Sep - 06 Oct	Aer Lingus	direct
23 Sep - 02 Oct	Air France
24 Sep - 28 Sep	SWISS
21 Sep - 05 Oct	Air France
20 Sep - 28 Sep	United	direct
20 Sep - 11 Oct	United	direct
27 Sep - 05 Oct	Delta
13 Sep - 22 Sep	Air Canada
21 Sep - 24 Sep	Aer Lingus	direct
08 Sep - 10 Sep	Air Canada
09 Sep - 16 Sep	Air Canada
21 Sep - 05 Oct	United	direct
27 Sep - 05 Oct	United	direct
13 Sep - 18 Sep	Air Canada
10 Sep - 16 Sep	Air Canada
09 Sep - 19 Sep	Air Canada

Also check the deals for one-way flights from Newark 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 Newark to Dublin in September from $386

Return flights