Following the new measure, boarding passes for the airline now reportedly state in the small print: “Gatwick security control gates are automatically being timed to close 30 minutes before departure.”
But the boarding pass will still state that passengers should enter the security area with at least half an hour to spare.
An easyJet spokesman said: “Punctuality is important to our passengers and that is why we ask passengers to be at the gate no later than -30 minutes before the flight departs.
“This means that if passengers are still yet to clear security at -30 they will be unable to achieve this – particularly at larger airports like Gatwick when walks to some gates can take up to 20 minutes.
“We are implementing this to eliminate unnecessary journeys for passengers who then need to be escorted landside.
“The vast majority of our passengers arrive as we suggest at the gate before -30 to board the aircraft.”