At London Gatwick (LGW) in 2026, British Airways (BA) typically allows you to check in your bags starting three hours before long-haul flights and two hours before short-haul flights. However, BA also offers a highly convenient "Twilight Check-In" service at Gatwick's South Terminal. If your flight departs the next day before 1:00 PM, you can drop off your bags between 6:00 PM and 9:00 PM the evening before. This service is free and allows you to head straight to security the following morning. For standard day-of travel, the "Bag Drop" desks usually open at 5:00 AM for the earliest wave of departures. It is important to note that you must have already checked in online and have your boarding pass ready to use the "Self-Service Bag Drop" kiosks in Zone A. In 2026, Gatwick is a "silent airport," so ensure you drop your bags early to allow enough time to navigate the security queues and reach the gate, which can be a 15-minute walk.