Thousands of passengers impacted.
Aer Lingus has been forced to cancel all their scheduled flights from Dublin Airport to all European and UK destinations this afternoon.
The airline is having a technical problem with its reservation and operational systems.
This is causing check-in and boarding disruption.
It is thought that thousands of passengers are impacted, with queuing building for metres outside the Terminal 2.
Please note, @AerLingus have requested that any @AerLingus passengers due to fly on any of their cancelled services today should NOT arrive at Dublin Airport.
— Dublin Airport (@DublinAirport) September 10, 2022
The Aer Lingus website remains inaccessible, with a temporary image saying it's undergoing a 'scheduled upgrade.'
It's expecting delays and disruption to services, for several hours.
The company is apologising to passengers for the inconvenience, and says its working to solve its connection issues as soon as possible.

Aerosol Misuse In Kildare Raises Fears Of Sudden Death Risk Among Teens
New Housing Plan Could See Kildare County Council Bidding Against First-Time Buyers
Remembrance Service For JoJo Dullard: Parish Marks Three Decades Since Disappearance
Local Property Tax Deadline Extended To Wednesday
Lawless Rejects Claim He Let Apprenticeship Exam Leak Scandal "Fester"
Three Teenagers Arrested In Connection With Rioting At Citywest Hotel Last Month
Alleged Admissions Row Ignites Between Leixlip Schools Over Irish V English Language Pathways
BreastCheck To Fall Short Of Screening Target For Third Year Running