Ryanair chief executive Michael O'Leary said that any plan to start a transatlantic service is four to five years away.
Speaking to reporters in Dublin, he said the plan is still speculative though there have been talks with airports about starting such a service.
Mr O’Leary said any plan depends on getting getting planes at the right price.
Separately, he said there's "not a chance" of teaming with the Government for a joint sale of their stakes in Aer Lingus.