A travel expert says there has been no real increase in air travel since the 'green list' was published.
Last week, the Government published a list of 15 countries that people could travel to without having to quarantine for 14 days on return.
Greece and Italy are among these countries.
Dublin Airport says in the week to July 19th, it had an average of about 12,200 passengers per day.
In the week to July 26th, the airport had an average of 13,200 passengers a day.
The green list was published on July 21st.
The daa says in 2019, travel to the 15 named countries represented only 9% of its traffic.
Eoghan Corry told Pat Kenny that travel has not risen as a result.
"Same numbers Pat, about 13,000 going through Dublin Airport, between 80 and 100 flights a day.
"Some of the companies reacting to the green list, for instance TUI - the big tour operator - put on a Greek programme from a second week in August.
"And Ryanair put on some extra green flights.
"But it hasn't made a huge amount of difference.
"There is a parallel world where people are traveling and the green list publication - there's only one really significant inbound country on that, Italy, about 400,000 inbound... and Malta, Cyprus, Greece would all count as Mediterranean destinations.
"What is most interesting is what will happen the next time the green list is up.
"A lot of talk that regions should be included - in fact a region is included, Greenland, is outside the European Union but it's a region of Denmark.
"Whereas the Canary Islands has a very low rate".
"The re-opening of borders is always a sort of a stop-start, very 'be careful as you go' project - but most of the European countries are keeping to it.
"The spiking that has been quite spectacular over the last few days has pushed some of the European countries - Spain being one of them, Portugal was already there - over the European Centre for Disease Prevention and Control's metric of 20 cases per 100,000 in the last 14 days."
"The big question when we come up on August 10th is will we take the same metric, which is better than Ireland, and the number of countries in that list are going to come down - for instance, somewhere like Lithuania's fallen off it and Malta's fallen off it.
"Or will we take the approach of adopting the regions?"
"The Spaniards particularly are lobbying very, very hard that regions is the way forward.
"And they would say that, wouldn't they - because 13% of their GDP is tourism".
"The problem people are looking at now is inconsistency: if you have a policy stick to it - Ireland bears credit for that.
"Some of us would be very critical that we just weren't willing to move with the rest of Europe.
"At least there aren't the inconsistencies there".