Security-control staff at Adolfo Suárez Madrid–Barajas Airport began an indefinite, full-time strike on 14 September, prompting warnings to travellers and reports of lengthy queues, delayed and cancelled flights.
Unions representing the roughly 800 passenger-control employees said the action was launched in a dispute with Trablisa, the private company that operates the airport's security lanes, and is focused on what they describe as excessive workloads and poor working conditions compared with other Spanish airports. Passengers were advised to arrive at the airport early to avoid disappointment.
Social media posts and images circulated on X and other platforms showed long lines at security and passport-control areas across terminals. Some travellers described kilometre-long queues to pass security at Terminal 4, while others reported waits of more than an hour and a half to reach checkpoints. One user on X posted: "There is a three-block queue for security control due to a strike." Another wrote: "Chaos today as security employees decided to strike."
State-owned airport operator AENA posted on X that "security check times may be longer than usual" because of the strike and apologised for the inconvenience. Airlines and travel outlets issued advisories warning passengers to allow extra time for check-in and to expect delays or cancelled departures.
The strike action affects passenger-control staff who screen travellers and process document checks; unions described the stoppage as "indefinite and full-time". They have argued that staff numbers and the distribution of duties at Madrid–Barajas are inadequate for the airport's traffic compared with comparable Spanish facilities. The unions say the dispute is with Trablisa over workload and working conditions.
Travel disruption at Madrid–Barajas, Spain's busiest airport, has immediate operational consequences. Longer security lines increase the risk of missed connections and pushback times, and passport-control backlogs have left some tourists delayed in entering or leaving the country. Several travellers reported reaching the airport after changes to bus stops and transport links, compounding delays in getting to terminals.
At the time of publication, there was no public statement from Trablisa on the strike's causes or whether negotiations have been scheduled. Unions have not announced an end date for the strike. AENA and carriers recommended passengers check flight statuses with their airlines and arrive well ahead of scheduled departure times.
Industrial action by airport staff in Europe has repeatedly produced outsized knock-on effects, with security staffing levels and privatised screening contracts often central to disputes. The Madrid–Barajas stoppage follows that pattern: a limited group of security personnel can significantly slow passenger processing at a major hub, affecting inbound and outbound services alike.
Authorities and industry sources said they were monitoring the situation as the strike continued. Passengers travelling to or from Madrid–Barajas were urged to confirm travel arrangements with airlines and to plan for extended processing times at both security and passport-control points.