Aer Lingus have confirmed that the IT problems which saw flights postponed, cancelled and delayed on Saturday has now been fixed.
An ongoing IT issue had caused major issues for the airline, with images surfacing on social media on Saturday morning showing hundreds of people in queues waiting to check their bags before heading off on holidays.
The IT issue meant that any flight after 2pm was facing disruption or even cancellation.
READ MORE: Aer Lingus cancel all remaining UK and EU flights today amid 'major incident'
But now, the issues have been fixed - with the airline confirming that 51 flights had been cancelled on Saturday.
A spokesperson told the Irish Mirror: "Aer Lingus had to cancel 51 flights today, mainly to and from Dublin / European & UK destinations.
"Aer Lingus is operating all of its transatlantic services from Dublin, albeit with delays and reduced passenger numbers in some instances due to security restrictions applying as a result of the systems outage.
"Our transatlantic services from Shannon operated as normal today. Aer Lingus Regional (operated by Emerald Airlines) are also planning to operate remaining services today, albeit with delays.
What if I had my flight cancelled?
All passengers affected by today's disruption will be able to apply for a refund or change their travel plans free of charge.
Aer Lingus said: "As systems have now been restored we are contacting customers directly in order to re-accommodate them as efficiently as possible.
"We have made additional customer service agents available to deal with high call volumes – please bear with us as we try to service all customer queries."
Aer Lingus advises customers that its operations for tomorrow are planned to operate as normal. Customers are advised to come to the airports at the normal time for their scheduled flight.
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