London City Airport (LCY) is widely regarded as the most efficient airport in the UK, primarily catering to business travelers who value speed. Under normal conditions in 2026, you can expect to get from the front door through security in just 10 to 20 minutes. During peak weekday periods (5:00–9:00 AM and 4:00–7:00 PM), this may increase to 30 minutes, but it rarely reaches the hour-long waits seen at Heathrow or Gatwick. The single-terminal design is compact, meaning there are no long shuttle rides or miles of walking to reach your gate. On the return journey, the time from "baggage reclaim to exit" is often as little as 3 to 5 minutes. Because all gates at LCY use walk-boarding (tarmac walking rather than jet bridges), the deplaning process is also remarkably fast. For a domestic or European flight, arriving 90 minutes before departure is usually more than sufficient, allowing you to breeze through the checkpoints and enjoy a coffee at the gate with plenty of time to spare.