Shannon Airport is to come to a stand-still this evening with Air Traffic Controllers planning to go on strike.
The unofficial action is to take place between 9 and midnight tonight, meaning no flights will be allowed in or out of Shannon during that time.
Hundreds of passengers will be disrupted by tonight's strike action, with between 10 and 12 flights grounded as a result.
It's because of an ongoing dispute between air traffic controllers and the Irish Aviation Authority about staffing levels.
The controllers are refusing to work any overtime as result - leading to dozens flights being cancelled at Dublin airport last month.
The issue has been brought to the Labour Relations Commission and talks are to resume in less than two weeks.
In the meantime, any passengers who are due to fly through Shannon this evening or tomorrow morning are asked to contact their airline.