Carl Nally, founder of UFO and Paranormal Research Ireland, revealed that he has spoken with Irish pilots who have had near misses.
He claimed that they've met several pilots who have come into contact with the UFOs, the Sun reported
"Most of them say that, as they were coming in to land, they were diverted around this cloud, which had a solid object inside it," the paper quoted him as saying.
One aircraft was even damaged.
Nally said that a detective got footage of a triangular-shaped flying object shooting beams into the ground in Dunboyne, Co Meath, on his mobile phone.
Nally and fellow UFO enthusiast Dermot Butler, with whom he founded UPRI in 1998, also reckon the Tuskar Rock air tragedy 45 years ago was caused by aliens.
A total of 61 people died when an Aer Lingus plane mysteriously crashed off the Wexford coast in 1968. The pair has written a book about the incident, called States of Denial.
Conspiracy theorist Nally noted that many strange things are happening all the time out at Dublin Airport.
In the wake of apparent UFO sightings in Cork and Dublin, Nally wants the Government to follow in the footsteps of France, Germany and the UK and release it's X Files' official documents about suspected paranormal activity.
Last week a YouTube video of UFOs seemingly hovering over Cork went viral. The spooky footage shows a string of glowing orbs drifting at dusk last December.
And though sceptics reckon it was just sky lanterns, Nally argued that it could be a case for Mulder and Scully.