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

Return flights

05 Dec - 11 Jan	Lufthansa
06 Dec - 13 Dec	Lufthansa
11 Dec - 16 Dec	Lufthansa
07 Dec - 14 Dec	Lufthansa
01 Dec - 07 Dec	SWISS
12 Dec - 14 Dec	Air Canada
02 Dec - 09 Dec	Air Canada
29 Dec - 12 Jan	Air Canada
12 Dec - 09 Jan	Air Canada
11 Dec - 24 Dec	United
09 Dec - 24 Dec	United
06 Dec - 14 Dec	United
03 Dec - 08 Dec	United
31 Dec - 10 Jan	United
29 Dec - 24 Jan	United
30 Dec - 11 Jan	United
31 Dec - 24 Jan	United
30 Dec - 10 Jan	United
12 Dec - 09 Jan	Aer Lingus	direct
31 Dec - 10 Jan	Aer Lingus	direct

Also check the deals for one-way flights from New York to Dublin in December.

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 December from $311

Return flights