It comes after long queues at security in recent weeks.
Dublin Airport has re-iterated its advice to passengers to arrive three and a half hours before flights.
However, the advice is not to arrive four or five hours earlier to ease pressure on security staff.
The country's largest airport is expecting one of its busiest weekends in over two years.
Roughly 350,000 passengers will travel through the airport over the Easter weekend.
Over the last few weeks passengers have been left frustrated by massive delays, due to staff shortages.
Graham McQueen of The DAA says it's because the increase in passenger numbers was more than they expected.
"That's obviously caught the aviation industry a little bit by surprise," he said.
"Passenger numbers, not just in Dublin, but all around Europe in airports that we didn't think we'd get in a couple of years."
"We're having to accommodate a lot more passengers than we were expecting."