An ceremony will be held at Gatwick today as it becomes an Autism Friendly airport.
The airport will be presented with an award by the Chief Executive of the National Autistic Society to mark the achievement.
It recognises the efforts of Gatwick to meet a range of Autism Friendly criteria to help passengers, their families and carers.
The airport has been praised for providing clear and accessible information for passengers about the airport and the assistance available to help plan for their journey.
Staff have been specially trained to help assist autistic passengers and a hidden disability lanyard system has been put in place.
More than 1 in 100 people in the UK are autistic.