Aer Lingus managed to recruit the group through a social media campaign, using community sites such as Facebook and Twitter. More than 2,000 people registered and 999 places were offered on a first-come basis. In return for taking part, the 999 nudes received two free return flights to one of the eight new European destinations from Gatwick, such as Vienna and Munich.
But the nude marchers nearly fell foul of the law.
"We had a police visit this morning where we were warned that if any of the participants were completely nude, they would be liable to a fine for 'indecent exposure'," Aer Lingus corporate affairs director, Enda Corneille said.
"However, once out of sight of the cautious police, many of the participants ignored police warnings and stripped off for the bewildered, but eager, on-looking crowds, who captured the event on their camera phones."
Many were wearing some carefully placed Shamrocks to spare their blushes.
Nudes of all shapes and ages took part in the event, which even included several over sixties. The crowd consisted of around 500 men and 500 women.