Ryanair says it will carry more than five million customers over the Christmas period.
The airline says it is adding a million extra seats for the holiday season.
The five million passengers are booked to travel between December 18 and January 7 across Ryanair's European network.
Ryanair’s Robin Kiely said: "Ryanair will carry over 5m customers across Europe during the Christmas period.
"This is an increase of over 900,000 customers on 2014 with record bookings across our network as people fly home for Christmas on the lowest fares."