Fly nonstop from New York-JFK to Shannon, Ireland for $373 roundtrip on Aer Lingus this fall and winter.
This fare is valid for departures starting late September through March 2019. Travel is available daily, but you might have better luck searching for a seat midweek.
Please take note that this is Aer Lingus' "Saver Fare," which only includes a carry-on bag plus one personal item up to 22 lbs. Consider their smart fare at $453 round-trip if you need checked baggage allowance or would like to choose a specific seat.
Searching on the Aer Lingus site, I was able to find seats departing JFK on Sunday, September 30, and returning from SNN on Sunday, October 21, 2018. You'll find the best prices on Aer Lingus's own website as third-party booking sites only display the "Smart Economy" fares.
For all the NYC based travelers, make sure to check out our JFK flight deals page for a full list of low prices we've found today.
Need a room on the Emerald Isle? Here's what's available for the mentioned dates on Hotelwatchdog.