AirHint found the following cheapest return flights from New York (NYC) to Dublin (DUB) in September 2026 (see full year).

Return flights

22 Sep - 29 Sep	Air Canada
05 Sep - 12 Sep	Air Canada
02 Sep - 08 Sep	Air Canada
04 Sep - 08 Sep	Air Canada
04 Sep - 19 Sep	Air Canada
02 Sep - 07 Sep	Air Canada
23 Sep - 30 Sep	Air Canada
01 Sep - 08 Sep	Air Canada
03 Sep - 07 Sep	Air Canada
30 Sep - 07 Oct	Air Canada
14 Sep - 24 Sep	United
30 Sep - 05 Oct	United
24 Sep - 01 Oct	United
30 Sep - 07 Oct	jetBlue	direct
24 Sep - 01 Oct	Aer Lingus	direct
30 Sep - 05 Oct	Aer Lingus	direct
30 Sep - 03 Oct	Aer Lingus	direct
29 Sep - 06 Oct	Aer Lingus	direct
26 Sep - 03 Oct	Aer Lingus	direct
27 Sep - 04 Oct	Aer Lingus	direct

Also check the deals for one-way flights from New York 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 New York to Dublin in September from 295€

Return flights