Dublin Airport has warned intending passengers that all of its car parks are sold out in the coming days and that parking is likely to be limited at the airport throughout the summer.
It said that if people have not pre-booked a car park space they need to look at other options for travelling to the airport.
Daa, who operates the airport, has blamed the closure of a privately run parking facility along with the return to pre-Covid passengers levels for the shortfall.
They said that in the coming days, both the long and short-term car parks are "very full" and while there will be room for people who are coming to pick people up, for those who are looking to stay for a longer period of time the parking situation is "very tight".
DAA Communications Manager Graeme McQueen said: "We have 23,000 spaces but it isn't enough to meet the demand. We've got about 100,000 passengers going through every day at the moment.
"So there's big demand on the car parks and quite simply we're full for the days ahead. If you do turn up by car there's no guarantee there will be a space here for you if you haven't booked.
"The message is if you're travelling to Dublin Airport don't do it by car, look for an alternative option.
"Either come by bus, get a taxi out or maybe get a friend to drop you out. Other than that we'd be recommending that people look at maybe parking somewhere else in the Dublin areas and trasiting in from there."
Speaking to RTÉ's News at One, he said the situation is due to the large numbers of people travelling daily and the closure of the privately run parking facility near the airport
Mr McQueen said with 96,000 passengers travelling today alone and one-fifth of the parking spaces normally available closed since Covid is contributing to the issue
"That car park is sitting idle at the moment. It's putting a real squeeze on our own car park so we are keen to see that carpark being re-opened as soon as possible.
"We've made an offer to buy that car park, that offer has been accepted but the competition authorities are taking a look at that to make sure they're happy with the deal so we'd be hopeful that we can get that carpark back into action as soon as possible. We would love that to happen in time for summer but thats looking unlikely at the moment.
"If we were to get the green light we could probably get that open in a couple of weeks but it all depends on the outcome from the competition authority."
In a statement to RTÉ News, the Competition and Consumer Protection Commission said while talks about Dublin Airport purchasing the car park took place last year they were only formally informed in March of this year of the planned merger.
The CCPC said it asked both parties for more information earlier this month which "temporarily suspends the determination deadline".
It says that it is still awaiting that information from the parties involved.
However, it said that the "merger review process has not prevented either party from operating a car parking business".
Dublin Airport said the parking situation is likely to continue for the summer.
They are advising people to book their parking when making their travel plans and if they do not have a space reserved not to drive to the airport
It said: "Maybe think outside the box for the weeks ahead. We're restricted in how many spaces we have available. It's going to be tight for the summer months. So make your booking early. And if you don't have a book and look at those alternate options."
Dublin Airport last summer asked the Minister for Transport to approve new parking spaces at the airport but the Minister declined the request
Daa said it may have to repeat its request to the Minister if problems with parking persist.
Daa said: "If there's any way of getting more car parking spaces on the airport campus we will look to do that.
"We'll look to work with the Minister as well. We've got ideas as to how we could maybe use other pockets of land that we have at the airport in the interim to park cars that would ease the pressure in the short term.
"But ultimately, we need to get that old Quik Park site back in action."
