Cheapest return flights from New York to Shannon in December from $850

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

Return flights

10 Dec - 27 Dec American Airlines
30 Dec - 03 Jan Lufthansa
09 Dec - 29 Dec Air Canada
08 Dec - 29 Dec British Airways
12 Dec - 29 Dec British Airways
26 Dec - 04 Jan Air Canada
22 Dec - 30 Dec Air Canada
23 Dec - 04 Jan Air Canada
22 Dec - 02 Jan Lufthansa
20 Dec - 31 Dec Spirit Airlines
18 Dec - 28 Dec British Airways
21 Dec - 30 Dec Air Canada

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

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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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