Dublin Airport operator, daa, has warned passengers using the airport over the busy Easter weekend that its car parks are going to be full.
The airport said those planing to travel to the airport should do so by bus, taxi or get dropped off.
Over half a million passengers are expected to pass through the airport between Thursday and Monday, with 255,000 of those departing and 240,000 arriving.
Friday is set to be the busiest day, when 104,000 passengers are forecast to travel.
As a result, the airport warned that demand for parking is going to be extremely high, with both short and long term spaces on course to be sold out from Friday through to the middle of next week.
"Our car parks are going to be full this weekend, so if you haven't booked a space already then we'd advise passengers to plan to travel to the airport by bus, taxi or to get dropped off by a friend or relative," said Graeme McQueen, Media Relations Manager at daa.
The warning comes days after the competition watchdog blocked plans by daa to buy a 6,000 space disused car park near the airport.
daa had planned to use the former QuickPark facility to increase supply ahead of the peak summer season.
But following a lengthy investigation, the Competition and Consumer Protection Commission said it had concerns that the deal would lead to higher prices and lower service quality for consumers.
The CCPC's investigation found the deal would substantially lessen competition in car parking serving Dublin Airport, as daa would own over 90% of the public car parking spaces if the purchase went ahead.
The CCPC said that because daa would not face competition for customers from any other large car park providers, this would have harmful consequences for consumers.
The airport operator expressed disappointment with the decision and indicated it would consider appealing.
