The chief executive of Aer Lingus Dermot Mannion has said the debacle of the €5 fares is over and that it has reached a settlement with all the passengers involved.
The airline provoked a storm of protest when it withdrew a €5 offer on its website for passengers to fly business class on transatlantic routes, only to back down in the face of a public outcry.
The airline has since offered all 300 people who booked the €5 fare economy class seats as compensation.
Speaking at the 50th anniversary celebration of Aer Lingus' first transatlantic flight Mr Mannion said: "It was a mistake on the web. As the chief executive I take responsibility for that. We should have rectified it quicker. We could have rectified it the first day, but I think that now we are in a good space.
"We have been in touch with all passengers affected. Virtually all of them have been happy to rebook in economy class and I think, albeit, it took us a little bit longer than it should have done, we are in a space where the passengers are satisfied with what we have done and that's always the important point.
"All of the passengers who were affected would confirm that once they were contacted by the Aer Lingus customer services department, they were given a fair deal. I don't there is any further follow-up required at this stage."
It is 50 years to the day since the inaugural flight from Dublin to New York which heralded the beginning of the transatlantic service.
The anniversary celebrations were held at the US Ambassador's Residence in the Phoenix Park.
Among those present were the cabin crew on board the Super Constellation which made the 12 hour flight, the former Taoiseach Garret Fitzgerald, who was then Aer Lingus' Research and Schedules Manager, the Minister for Transport Noel Dempsey and the ambassador Thomas Foley.
