ryanair know how to rig numbers.
1. RYANAIR’S APRIL TRAFFIC GROWS 17%
according to they web site news and releases to stock markets.
They had 6.2 million booked passengers up from 5.3 million in April a year before.
later they say
includes up to 1.2M passengers who were booked to fly between the 15th to 22nd of April but whose flights were cancelled due to the closure of much of European airspace following the volcano eruptions in Iceland.
So they flew 5 million booked seat some of which will be rebookings from when air space was closed. I always knew they cheated a bit but did expect them to take off booked seats when the sector was not flown