Aer Lingus has a sale on direct transatlantic flights from Dublin and Shannon to many American cities starting at €277 return!
There are plenty of destinations with direct flights from Dublin to New York, Boston, Hartford, Washington, Philadelphia, Miami, Los Angeles, San Francisco, Minneapolis, Chicago and Seattle. Aer Lingus direct flights from Shannon destinations include New York and Boston.
Prices start from €277 return and are hand luggage only fares. You can upgrade from a Saver fare to a Smart fare, which includes a checked bag, from €40 one way.
The period of travel for these deals is between January – early April with certain blackout dates such as St Patrick’s Day. There is no time period of when this promotion ends (from what I can see anyway!) so book early to avoid disappointment.
There is a list of destinations with sample dates, click on these links to alter the dates with Skyscanner.