Belgium’s air traffic control authority has shut down the country’s air space for 24 hours due to staffing uncertainties caused by a nationwide strike.
The authority said it was forced to shut down its air space from 9pm GMT on Tuesday until 9pm GMT Wednesday.
At least 400 flights were set to be cancelled over the period, with an estimated 50,000 passengers said to be affected.
Several Ryanair and Aer Lingus flights between Dublin and Brussels have been cancelled as a result – and passengers are advised to contact their airline for up to date information.
“Although the terminal remains open, we kindly ask our passengers not to come to the airport on Wednesday,” a statement posted on its website said.
The airport in the nearby city of Charleroi, south of Brussels, which handles about 140 flights daily including daily services from Dublin, was also ordered closed on Wednesday due to the strike.