Yes, London Gatwick Airport (LGW) is open 24 hours a day, 365 days a year. Both the North and South terminals remain accessible throughout the night, making it a common "layover" spot for budget travelers. While the terminals are open, the "airside" areas (past security) usually close after the last flight of the evening departs (around midnight or 1:00 AM) and reopen for the first morning wave (around 4:00 AM). If you arrive at 2:00 AM, you will likely be restricted to the "landside" arrivals halls. Most shops and restaurants close during the late-night window, though you can usually find a 24-hour café like Costa Coffee or a convenience store like WHSmith open in each terminal. For those looking for rest, Gatwick features "YOTELAIR" in the South Terminal, which offers cabins by the hour, and several hotels connected by walkways. Be aware that the inter-terminal shuttle also runs 24/7, ensuring you can move between the North and South terminals at any hour of the night.