Ryanair passengers were left angry and panicked on Thursday after the airline's reservations system suffered an outage.
Holidaymakers looking to check-in for flights or book future trips were left stressed after the reservations and online check-in systems became "temporarily inaccessible" from 12pm.
Many reported that their trips were cancelled according to the Ryanair app, even though the flights were going ahead as planned.
READ MORE: Dublin Airport passengers report dramatic change as Easter holidaymakers share positive updates
The error caused widespread confusion among travellers, some of whom had already arrived at the airport only to discover that their flights were incorrectly listed as cancelled due to the system disruption.
The company apologised for the problem and said they were working to solve the issue.
Customers encountering issues checking in online for flights on Thursday were advised they could do so free of charge at their departing airport.
Passengers vented their fury online after the system went down ahead of the Easter weekend, one of the busiest times of the year for international travel.
One person said: "@Ryanair My flight from London to Stansted has been cancelled no flights available from all of london to ireland until may??? What is going on? #ryanair."
A second wrote: "Uhmmmm. Anyone’s april Ryanair flight cancelled? Mine just got cancelled and I cannot see any available flights in April for any destination. @Ryanair care to explain?"
A third person said: "@Ryanair Help! My return flight from #AGP Malaga to #PIK Prestwick on Saturday FR656 is showing as cancelled but people are saying there's been a glitch cancelling all flights? What's going on?"
A fourth said: "My flight from Manchester to Palermo for tomorrow evening seems cancelled on the App but not received any email? Is my flight confirmed or cancelled?"
A fifth commented: "@Ryanair Getting mixed messages saying my flight from DUB -> EMA is cancelled on Tuesday 18th. Can you confirm???"
A sixth stated: "@Ryanair @askryanair Help!!Daughter just left Bristol for Naples via Milan on RYR8262. Just been told Milan-Naples flight cancelled. Any advice? Thanks."
Another added: "A friend booked a new flight because your app was saying that their flight was cancelled. Can you guarantee her a refunded return journey because of an error on your app?"
Someone else said: "@Ryanair what do you plan for customers who really believed that their flight was cancelled and who have already applied for a refund???"
And another wrote: "@Ryanair_ES @Ryanair just confirmed that the flight fr5052 indeed was not cancelled and its a bug on their system today."
https://twitter.com/Ryanair/status/1514578533967974402?s=20&t=O7kVFaLdFJDMavHARtos9g
Ryanair said in a statement: "Due to a reservations system failure today at approx. 12pm, our reservations system for April & our online check-in system are temporarily inaccessible. We are working with our reservations system provider, Navitaire, to restore these systems as soon as possible.
"Any passengers who have not already checked in online, may have difficulty doing so for the next couple of hours and they can check-in at the airport free of charge while we restore the Navitaire system.
"We apologise sincerely for any inconvenience suffered by passengers as a result of this brief disruption to April bookings & check-in.
"There is no disruption to bookings being made in May, June July or thereafter & all today’s flights are operating as scheduled."
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