Aer Lingus are allowing Dublin Airport passengers to check-in their bags the night before flying as staff shortages continue to cause havoc.
Passengers have endured lengthy queues since the weekend, with one saying it took them "nearly three hours" to get through security on Sunday morning.
Ryanair have advised passengers flying from Dublin to arrive at least three and a half hours before their departure time.
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They said Check-in Desks, Kiosks and Baggage Drop will be open 3.5 hours before departure.
And in a bid to take pressure off passengers who are flying early in the morning, Aer Lingus will be opening their baggage drop-off areas to customers the night before.
They said: "If your flight departs Dublin Airport between 05:30 - 08:00 in the morning, you can check in at the airport between 16:00 and 19:45 the evening before.
"This service is available for both Aer Lingus and Aer Lingus Regional flights.
"Each passenger needs to present themselves to check in and drop off bags but if you are travelling with immediate family, one member of the family can check in and drop bags for the group the evening before.
"Passports/ID cards are required for all passengers travelling, and must be presented the evening before. Kiosk Bag Drop is also available for all passengers availing of this service.
"While this facility will save you time by avoiding check in the following morning, all passengers will still need to leave adequate time in the morning to get through security and to get to their gate. We would recommend that you come to the airport 90 minutes before your flight is due to depart."
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A spokesman for daa told Dublin Live that "queues for security are likely to be experienced at peak hours over the days and weeks ahead".
He said: "Unfortunately, some passengers are experiencing delays at Dublin Airport this weekend.
"We apologise to passengers impacted. Like other airports all over Europe, we are currently working extremely hard to ramp up our operation at Dublin Airport after the collapse of international travel over the past two years, including the hiring and training of staff.
The recruitment, training and background security checks for all staff working at an international airport takes a number of weeks. This is happening against a backdrop of growing passenger numbers at Dublin Airport.
"This is having an impact on the length of time it is taking passengers to get through security, particularly at busy times. We apologise in advance but queues for security are likely to be experienced at peak hours over the days and weeks ahead as we continue to bring trained staff on board. In the meantime, we are doing all that we can to ensure that our security operations are operating at the maximum level possible at all times."
The spokesman said daa hope more new staff can begin working in the coming weeks.
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"Over 100 new security staff have been recruited since the start of the year but there have been delays in bringing some of these people into the operation because of the requirement for enhanced background checks for aviation workers which came into effect since January 1.
"This log jam is now easing, and we hope that more new staff can begin working on the frontline in the coming weeks. In the meantime, we appreciate the patience and understanding of our customers as we work to restore customer service levels to what were the norm in 2019.
"Because of the Covid pandemic, around 1,000 staff left Dublin Airport under a voluntary severance scheme and while there is an ongoing recruitment drive to replace frontline staff in areas such as security and retail, all companies who operate at airports across Europe are experiencing similar challenges as we approach the start of the busy summer season ahead.
"Anyone travelling through Dublin Airport in the coming days and weeks should be prepared for things to take longer than they might expect. To minimise the impact, we encourage all passengers to check in bags where they can and to carry the minimum amount with them when presenting at security.
"We would also encourage all passengers to be at the airport a minimum of 2 hours before boarding a short-haul flight and 3 hours prior to boarding a long-haul flight."
They said their customer service team is available to assist passengers impacted by the delays.
"We empathise completely with any passengers who have missed a flight this weekend as a result of the delays at airport security. Thankfully, many of those passengers have been able accomodated on later flights or have re-booked.
"Dublin Airport's customer service team is available to answer any questions that impacted passengers may have regarding their rights. They can be contacted on +353 1 9444717 or via email: customerexperience@dublinairport.com."
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