Dublin is on sale with all three alliances for travel from New York and Newark October to June with fares in low $500s round trip and nonstop flights available with all three airlines American, Delta and United. Fares in the $500s are even available for late December Christmas season travel with all three airlines.
Finnair ticket flying American Airlines operated nonstop flights.
American Airlines New York JFK – Dublin DUB
Delta Airlines New York JFK – Dublin, Ireland DUB
United Airlines Newark EWR – Dublin, Ireland DUB
Christmas Season Tickets
United Airlines Newark EWR – Dublin DUB – Toronto YYZ – Newark EWR
American Airlines New York JFK – Birmingham BHX – Dublin DUB – London LHR – New York JFK