AirHint found the following cheapest return flights from Shannon (SNN) to New York (JFK) in December 2025 (see full year).

Return flights

06 Dec - 13 Dec	Aer Lingus	direct
13 Dec - 20 Dec	Aer Lingus	direct
12 Dec - 17 Dec	Ryanair
18 Dec - 21 Dec	Aer Lingus	direct
20 Dec - 27 Dec	Aer Lingus	direct
26 Dec - 01 Jan	Aer Lingus	direct
27 Dec - 02 Jan	Aer Lingus	direct
31 Dec - 03 Jan	Aer Lingus
29 Dec - 03 Jan	Aer Lingus
28 Dec - 01 Jan	Aer Lingus
30 Dec - 03 Jan	Ryanair
27 Dec - 03 Jan	Aer Lingus
27 Dec - 01 Jan	Aer Lingus

Also check the deals for one-way flights from Shannon to New York 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.

Book a cheap hotel in New York

Cheap car rent in New York

Cheapest return flights from Shannon to New York in December from $525

Return flights