Ryanair's chief executive Michael O'Leary has said that the airline intends to begin transatlantic flights within three to four years.
In an interview with Flight International, Mr O'Leary said the airline was looking at flying to up to six US cities from European airports where it has bases.
Mr O'Leary said the cheapest flights for US passengers to be around $12, but revenues would be increased by sales of food, duty free goods and inflight entertainment.
He also said the airline would include a premier class on the service.