AirHint found the following cheapest return flights from Shannon (SNN) to New York (JFK) in September 2026 (see full year).

Return flights

03 Sep - 10 Sep	Delta	direct
17 Sep - 21 Sep	British Airways
18 Sep - 21 Sep	Ryanair
05 Sep - 20 Sep	Aer Lingus	direct
17 Sep - 21 Sep	Aer Lingus	direct
18 Sep - 21 Sep	Aer Lingus	direct
28 Sep - 01 Oct	Aer Lingus
06 Sep - 11 Sep	British Airways
06 Sep - 11 Sep	Aer Lingus	direct
28 Sep - 01 Oct	Aer Lingus	direct

Also check the deals for one-way flights from Shannon to New York 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 Shannon to New York in September from 449€

Return flights