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

Return flights

01 Sep - 08 Sep	TAP
02 Sep - 10 Sep	TAP
10 Sep - 26 Sep	Icelandair
15 Sep - 02 Oct	TAP
29 Sep - 07 Oct	Air Canada
17 Sep - 24 Sep	Air Canada
10 Sep - 17 Sep	Icelandair
13 Sep - 21 Sep	TAP
05 Sep - 10 Sep	Icelandair
03 Sep - 07 Sep	TAP
26 Sep - 04 Oct	Icelandair
01 Sep - 07 Sep	TAP
04 Sep - 08 Sep	Icelandair
24 Sep - 01 Oct	Aer Lingus	direct
23 Sep - 04 Oct	Icelandair
30 Sep - 07 Oct	Aer Lingus	direct
29 Sep - 07 Oct	Air France	direct
15 Sep - 02 Oct	Air France	direct
27 Sep - 04 Oct	Icelandair
29 Sep - 04 Oct	Icelandair

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 $367

Return flights