All Aer Lingus regional flights operated by Stobart Air have been cancelled with immediate effect after Stobart Air announced it has ceased operations.
The means Dublin flights to and from Donegal Airport are also grounded.
Aer Lingus said the airline informed them last night it was terminating its franchise agreement with Aer Lingus and was in the process of appointing a liquidator.
According to RTE News, Aer Lingus said it is now communicating to customers to advise them of their options for refund or rebooking.
Customers who were booked to travel on flights operated by Stobart Air are advised not to go to the airport and to check the Aer Lingus website for updated information on refund or rebooking options.
All Stobart Air flights on the following routes are cancelled: Dublin/Kerry; Dublin/Donegal; Dublin/Glasgow; Dublin to Edinburgh; Dublin/Manchester; Dublin/Newquay; Belfast City/Manchester; Belfast City/Birmingham; Belfast City/Edinburgh; Belfast City/Leeds Bradford, Belfast City/Exeter; Belfast City/East Midlands.