Dublin Airport has announced that it will refund all passengers who missed their flights on Sunday due to the long queues that stretched outside terminals.
However, the daa has said although passengers can claim money back for all "reasonable out-of-pocket expenses" incurred, it will not cover the costs of missed holidays or events.
On Monday, it said it "apologises unreservedly to the more than 1,000 passengers who missed their flight" on Sunday morning as a result of queues at Dublin Airport.
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Well over 1,000 passengers are believed to have missed their flights despite some reporting they had been standing in queues for over five hours.
Daa said it would work with passengers who were affected by the delays to ensure they are reimbursed for out-of-pocket expenses such as re-booked flights, extra accommodation and transport costs.
A spokesperson said: "In the first instance, impacted passengers are urged to contact Dublin Airport's Customer Experience Team via customerexperience@dublinairport.com, who will respond with a claim form that will need to be completed and returned, along with receipts for reasonable, out-of-pocket expenses.
"DAA thanks passengers in advance for their patience as we deal with a large volume of correspondence from the past few days."
Minister for Transport Hildegarde Naughton told DAA chiefs on Monday she wanted an actionable plan on her desk by Tuesday morning to set out how daa will avoid such chaos in the future.
Transport Minister Eamon Ryan and Minister Naughton held crunch talks with DAA boss Dalton Philips and his management team this morning. Ms Naughton also met with airlines on Monday afternoon.
Minister Naughton told RTÉ: "I have instructed that a plan is to be issued to me in the morning. How will they address this issue and ensure people get through security and don't miss their flight.
"The reason outlined today was in relation to staff and people being out sick, but my focus today wasn't about excuses - they are no different to every other business or sector across the country that have to deal with people being out sick… it's up to the DAA to be able to manage that.
"They dealt with this in the past. Back in March, they got ahead of the queues. What happened at the weekend was totally unacceptable. To have young children and elderly people queuing for hours - you'd want to be in the full of your health to do that".
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