Yes, sleeping in Gatwick Airport is allowed in 2026, and it is a common practice for travelers with early-morning departures. Both the North and South Terminals are open 24 hours a day. The South Terminal is generally preferred by "airport sleepers" due to its more comfortable seating and proximity to the 24-hour Tesco Express. Security staff typically patrol during the "quiet hours" (1:00 AM to 4:00 AM) and may ask to see a boarding pass to ensure you are a legitimate passenger. For those who find terminal benches too taxing, Gatwick offers professional sleep options like YOTELAIR in the South Terminal, which provides small cabins by the hour. In 2026, the airport has maintained its "sleeper-friendly" reputation, though it is always recommended to bring an eye mask and earplugs to block out the bright lights and frequent "night regime" maintenance announcements.