Brussels Airport has warned that a major Brussels Airport strike linked to a national union protest on 12 May could lead to the cancellation of around half of all departing passenger flights. The disruption is expected as Belgium prepares for widespread industrial action against federal government policies.
Airport officials said airlines have been asked to reduce scheduled departures ahead of the protest. The goal is to ease pressure on airport systems and avoid long waiting times for passengers. The airport also said it is preparing for major staffing shortages, especially in security and ground-handling services.
The warning highlights that departures will likely be affected more than arrivals. This is because many of the staff involved in check-in, baggage handling, and security screening are expected to take part in the strike action.
Brussels Airport said it is working closely with airlines and service partners to keep operations running where possible. However, it admitted that full normal operations will not be possible if key workers join the strike. Passengers are expected to be informed directly by their airlines once flight schedules are updated.
The Brussels Airport strike warning comes as Belgium’s three main trade union groups, ABVV/FGTB, ACV/CSC, and ACLVB/CGSLB, prepare a national demonstration in Brussels. The unions are protesting against federal government social and economic reforms.
Union leaders have raised concerns over pensions, wage indexation, purchasing power, and broader labour conditions. They argue that proposed reforms under the federal coalition government led by Prime Minister Bart De Wever could negatively affect workers’ rights and social protection systems.
The 12 May protest is part of a wider wave of demonstrations that have taken place since the current government was formed. Unions have repeatedly mobilised against planned changes to pensions, unemployment rules, and public spending policies.
For Brussels Airport, this will not be an isolated disruption. Reports indicate that it could be the ninth nationwide strike action since early 2025 that has affected airport operations. While not always directly aimed at aviation, these protests often impact airports due to the involvement of essential ground staff.
Previous national strikes have already caused major disruptions at Brussels Airport. Earlier demonstrations led to flight cancellations, staff shortages, and delays. Other public services such as transport networks, waste collection, and prisons were also affected during earlier protests.
The current Brussels Airport strike situation shows how vulnerable airport operations are to broader labour unrest. Even when aviation workers are not the main focus of a protest, flight operations can still be heavily impacted if key support staff are absent.
Aviation experts say that ground operations are essential for keeping flights running smoothly. Without security personnel, baggage handlers, and coordination staff, airlines are often forced to reduce schedules or cancel flights entirely.
The timing of the protest could also create extended disruption. While the strike is planned for Tuesday, 12 May, its effects may continue beyond the day itself. Aircraft positioning, crew scheduling, and delayed rotations could all contribute to ongoing travel disruption.
Airlines are expected to prioritise communication with passengers once revised schedules are confirmed. Travellers have been advised to check flight status regularly and avoid unnecessary travel to the airport without confirmation of their departure.
Belgium has seen repeated demonstrations since the formation of the current government. Trade unions have maintained pressure through nationwide protests, often drawing large crowds in Brussels and disrupting transport systems across the country.
The latest developments also come amid wider labour tensions in European aviation. Airlines in several countries, including Germany, have faced strike-related disruptions in recent months, adding pressure to an already strained industry.
Brussels Airport has stated that the planned reduction in flights is intended to maintain safety and prevent overcrowding during the protest. Authorities say managing limited operations is safer than attempting full capacity with reduced staffing.
The final level of disruption will depend on how many workers join the strike and how airlines adjust their schedules. However, current warnings suggest that significant flight cancellations are now highly likely for 12 May.
