In 2026, the average time to clear immigration and customs at London Gatwick (LGW) is between 45 and 90 minutes. If you are a citizen of the UK, EU, USA, Canada, or Australia and can use the e-Gates, you might be through in as little as 20 minutes if the lines are short. However, if you are arriving at the South Terminal during the "morning rush" (6:00 AM to 9:00 AM) or on a long-haul flight from a non-visa-waiver country, the wait for a manual desk can easily stretch to 2 hours. Once you pass passport control, the actual "Customs" check (the green/red channels) usually takes less than a minute unless you are pulled for a random bag inspection. To minimize your wait, try to sit at the front of the plane to be among the first at the kiosks and ensure your landing card (if required) is filled out before touchdown.