Thousands of travelers across Europe faced unexpected disruption on Tuesday after a surprise strike by Belgian air traffic controllers forced widespread flight cancellations at Brussels Airport and Brussels South Charleroi Airport, bringing large parts of the country’s air traffic network to a halt.
The industrial action, described as a wildcat strike because it was launched without prior notice, involved staff at Belgium’s national air traffic control provider, Skeyes. The strike began at 2 p.m. local time and immediately affected arrivals and departures across Belgium’s busiest airports.
Brussels Airport confirmed that all flights scheduled between 2 p.m. and 7 p.m. were canceled, affecting around 140 flights. Passengers were advised not to travel to the airport during the disruption period. Flights scheduled between 7 p.m. and 9 p.m. were expected to face delays, with some departures postponed until after 9 p.m. as airlines attempted to restore normal operations.
The disruption came after an earlier strike by air traffic controllers during the morning. Operations briefly resumed around 9:30 a.m., but a second walkout later in the day triggered far more significant consequences for airlines and travelers.
Hundreds of Flights Canceled, 20,000 Ryanair Passengers Affected
Airport authorities estimated that close to 200 flights would ultimately be canceled at Brussels Airport because of the industrial action. Charleroi Airport also reported extensive disruptions, while Antwerp, Liège and Ostend-Bruges airports experienced knock-on effects.
Ryanair said it canceled more than 100 flights to and from Belgium, impacting nearly 20,000 passengers. The airline criticized the lack of advance warning, arguing that carriers were left with little time to reorganize schedules or offer alternatives to affected travelers.
Brussels Airlines confirmed that several incoming flights had to be diverted to Paris and Frankfurt due to the restrictions on Belgian airspace around major airports.
Despite the disruption, aircraft flying over Belgium en route to other destinations continued operating normally. Those flights are managed by Eurocontrol, which oversees upper European airspace and was not affected by the strike.
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Why Air Traffic Controllers Walked Out
The dispute is linked to ongoing negotiations between Skeyes management and unions regarding a new digital air traffic control center that will oversee operations for Charleroi Airport and Liège Airport from Namur.
According to reports from Belgian broadcaster VRT, controllers have raised concerns about the safety and readiness of the new digital system. Employees are also worried about the impact of relocating operations to Namur, proposed transition arrangements, shift scheduling issues and pay differences between staff working at different airport control towers.
One controller speaking anonymously to Belgian media said many workers believe the new system is not sufficiently secure and that several long-standing workplace concerns remain unresolved. Reports also suggest a preliminary agreement discussed with union representatives failed to gain wider support among operational staff.
The strike has renewed attention on the vulnerability of European air travel to labor disputes involving air traffic control services. With summer travel demand increasing across the continent, airlines and passengers alike are hoping negotiations between Skeyes and unions can prevent further disruptions in the weeks ahead.
Tuesday’s disruption also underscores how essential transport infrastructure remains to economic activity and public mobility. Similar concerns about network reliability have emerged elsewhere, including Tasmania’s ongoing debate surrounding the Oatlands freight route crisis, where operational changes raised questions about the resilience of key transportation links.
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