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

Return flights

02 Oct - 07 Oct	Aer Lingus	direct
19 Oct - 31 Oct	Aer Lingus	direct
02 Oct - 05 Oct	Aer Lingus	direct
02 Oct - 06 Oct	Aer Lingus	direct
08 Oct - 15 Oct	Aer Lingus	direct
01 Oct - 05 Oct	Aer Lingus	direct
27 Oct - 03 Nov	Aer Lingus	direct
22 Oct - 29 Oct	Aer Lingus	direct
11 Oct - 18 Oct	American Airlines
22 Oct - 27 Oct	Aer Lingus	direct
11 Oct - 18 Oct	United	direct

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

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 Shannon in October from $290

Return flights