Ryanair is working with the Department of Justice to stop undocumented passengers from coming into Ireland, CEO Michael O'Leary has said.
He was speaking as fines are set to increase for carriers which bring undocumented passengers into Ireland.
Airlines could now be fined up to €5,000 if they are found to carry a passenger without valid travel documents - an increase of €2,000 on the current level.
However a person who is prosecuted for such an offence can still apply for International Protection.
Ryanair CEO Michael O'Leary told The Pat Kenny Show the carrier is working with Irish authorities.
"We send everybody who's non-EU - you have to get their visas checked - we're now taking photographs of their passports at the visa check desk," he said.
"We want to send that information to the Department of Justice so if somebody shows up [without documentation] we as the airline will be able to say, 'Here's the passport and here's where we think they were sitting'.
"The problem is they flush [their documents], they show up here and it's a complete scam."
A Ryanair cabin crew member looks out a plane door, 11-10-18. Image: Chris Craggs / AlamyMr O'Leary said Ireland needs to make a distinction between refugees and those coming from other EU countries.
"One of the things that drives me nuts in Ireland is we treat people like refugees who are coming from the UK or from France," he said.
"Nobody got to Ireland from Afghanistan, Kenya, Nigeria or from Syria on a direct flight because their aren't any.
"We should look after refugees, I have great sympathy for the Ukrainians.
"But people who are arriving in here from the UK, France or other EU countries we should be turning them back to the EU countries where you came from".
Mr O'Leary added that it is very difficult to track people who arrive here "because they tear up or flush their documentation down the toilets".
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