In reply to the Wow fares yesterday, Norwegian are at it today. Originating in Stewart Airport outside New York or Providence outside Boston to Dublin, Cork, Belfast and Edinburgh for $89 with available dates all the way to Christmas. Due to taxes the return fares are higher.
Stewart is a bit of a trek from NYC http://bit.ly/2vuuXUd as you can read here, but $89 to Europe is worth the hassle. Book on the Norwegian site and off you go!!!