No, you cannot spend the night inside London City Airport (LCY). Unlike larger hubs like Heathrow or Gatwick, London City is a "curfew airport" with strict operating hours due to its location in a densely populated residential and business area (the Royal Docks). The terminal typically closes shortly after the last flight arrives in the evening (usually around midnight) and does not reopen until early the following morning (around 5:00 AM to 5:30 AM). Security will ask all passengers to leave the building once the facility closes. In 2026, if you have an early morning flight, you will need to book one of the many nearby hotels, such as the Hampton by Hilton or the Courtyard by Marriott, which are within walking distance of the terminal. The lack of 24-hour access is part of why LCY is favored by business travelers for its speed and efficiency, but it makes it a "no-go" zone for budget travelers looking to save on a night's accommodation by sleeping in the terminal.