300 more security staff are needed.
Dublin Airport Authority says it's redeploying staff from Cork Airport - to help deal with long delays at the country's main airport.
Passengers have faced lengthy queues in recent weeks due to a shortage of security staff - 300 are needed.
Ryanair has called for the army to be brought in - but the DAA says the roles require five to six weeks of training.
Long security delays @DublinAirport due to DAA staff shortages.
Any passengers due to travel today should arrive at Dublin Airport at least 3 hours before their scheduled departure time.
We apologise to our customers for these unfortunate delays entirely out of our control.
— Ryanair (@Ryanair) March 27, 2022
Queue times at Dublin Airport this morning were up to 40 minutes.
Spokesperson Graham McQueen says it's doing all it can to find a situation.
"We're trying to get back to the levels of customer service that we pride ourselves on, and no stone is being left unturned," he added.
"But we do ask passengers to work with us and get to the airport early. Be prepared for things to take a little bit longer than what you might expect," he added.
Transport officials are to hold daily crisis management meetings to tackle the long queues.
It's expected thousands of people will travell through Dublin Airport.
