Ryanair has doubled-down on the need for the Army to be drafted into Dublin Airport to help with long delays.
It comes after big queues were seen at the airport, and outside the terminal, on Sunday morning.
Ryanair CEO Eddie Wilson told Pat Kenny suggestions that the Army be brought in to help should be reconsidered.
"Michael O'Leary was on recently talking about the Army and it was poo-pooed.
"We need the Army there... the Army have already got security clearance, and to have additional bodies on the ground either for queueing or for pat-down at security points.
"And I think that's the right thing to do, and it's visible as well.
"Get the resources in, get the Army in and communicate with the public and say 'There'll be 15 lanes open tomorrow' and they will guarantee that.
"And then people will build up confidence... it's just a simple resourcing issue, and people generally will respond to a number of days where there are no queues at the airport".
Earlier Dublin Airport's Graeme McQueen told Newstalk it doesn't have exact passenger numbers on a daily basis.
"We have to adapt on the day if things change - staff absenteeism, higher passenger numbers than we were expecting.
"That's commercially sensitive information from airlines - we take feeds from the airlines, we have an indication as to the number of passengers that are coming in.
"We have an indication of how many, but we don't know the exact numbers", Mr McQueen said.
But Mr Wilson believes the issue is purely down to staffing.
"Tha airports have the schedule, and we are 90% - and shortly to be 95% - full as we go through the summer months.
"It's not unexpected for the airports, that isn't the issue - the issue is just simply not gearing up in time post-COVID and planning for the recovery and having people ready to man the security points.
"It's just a simple staffing issue, it's as simple as that".
'We kept people in work'
And he says the key to ramping back up operations is to not let staff go in the first place.
"We were planning for the recovery from about Paddy's Day in 2020, and we had a number of false starts.
"But we kept people current, we kept people in work.
"People went through a lot of pain here in Ryanair on reduced hours.
"But the key was keeping the people: once you let people go, they disappear and people have to go and find work elsewhere."
He says the planning was not there for a return to travel.
"We've seen this time and time again: people have not planned for the recovery.
"It was obvious we were going to come back at some stage, and taking short-term decisions on staffing is leading to this crisis".
