For travel through Brussels Airport (BRU) in 2026, the standard recommendation is to arrive 2 hours before a short-haul (Schengen) flight and 3 hours before a long-haul (non-Schengen) flight. If you are traveling during peak periods—such as school holidays, Friday afternoons, or early Monday mornings—it is wise to add an extra 30–45 minutes to account for longer queues at security and border control. Additionally, Brussels Airport is a major hub that frequently experiences disruptions due to nationwide strikes or labor disputes in Belgium; for example, a major strike in March 2026 has been flagged to cause significant rerouting. Travelers should always check for "Live Flight Updates" on the official Brussels Airport app before leaving. If you are using the "BRUcloud" or "Fast Lane" services, you may be able to shave off some time, but given the airport's layout and the distance to some of the "B" gates (international), giving yourself a solid three-hour window ensures a stress-free transition through one of Europe's busiest international gateways.