Cork Airport's first transatlantic flight took off at the weekend when Norwegian Air International left for Providence, Rhode Island, in the northeastern United States.
Bookings from passengers travelling in either direction on the route are ahead of expectations, according to the airport’s head of communications, Kevin Cullinane.
Cork Airport managing director Niall McCarthy said the flight marked a “new chapter” in the airport’s history.
“With the chill winds of Brexit looming, tourism diversification is critically important to maintaining our strong regional economy and the US is a key growth market for the south of Ireland now and going forward,” he said.
Bjorn Kjos, chief executive of the airline, said: "We are delighted to finally launch these new transatlantic routes which simply wouldn't have been possible without the huge support from across Ireland over the past three years."
The new transatlantic service will operate three times a week, linking the south of the country to the greater Boston, Rhode Island and New England areas.
Norwegian had to wait three years to get permission from Washington’s department of transportation allowing it to fly to the US. The airline’s permit came through in December and it began selling flights earlier this year.
The carrier, an Irish subsidiary of Norwegian Air Shuttle, is launching transatlantic services from Belfast, Cork, Dublin and Shannon.
Among the passengers on board the first flight to Providence was Ciara Judge (19) from Kinsale, Co Cork, who was the winner of the 42nd BT Young Scientist and Technology Exhibition in 2013.
“I go over and back to America a lot. I worked in MIT for the past two summers. It makes such a difference for me to be able to fly transatlantic from Cork because I fly transatlantic a lot. This year alone I have been six or seven times. Travelling from Dublin or London adds so much to the travel time,” she said.