JetBlue Airways and Aer Lingus unveiled details of their strategic partnership on Feb. 1, nearly one year after the alliance initially was revealed.

The tie-up will take effect Apr. 3 and will feature a booking engine on EI's website that will allow customers to purchase tickets on EI flights to the US and JetBlue services from New York JFK in one transaction.

EI will have a transfer desk in the arrivals lobby of JFK's Terminal 4 where passengers can check-in and drop their luggage upon clearing customs. Those flying to Ireland will be able to check their bags through from their initial US departure point.

"Our partnership with Aer Lingus is a perfect fit with our brand and culture and we are thrilled to extend our network," JetBlue CEO Dave Barger said. EI CEO Dermot Mannion said, "We are proud to be pioneering the model of linking low-fare networks."