A bogus parking company made a fortune by promising to look after holidaymakers' cars before ditching the vehicles.
Customers' cars were left unlocked with the keys on the windscreen, despite them being promised a "secure compound".
The £1.4m operation was run by Asad Bashir Malik, and was discovered after trading standards were told that more than 1,000 vehicles had been parked in a field in Crawley, West Sussex.
An investigation by West Sussex County Council also found a host of fake reviews on the company website, London Parking Gatwick Ltd.
The two-year scam affected thousands of people, and Malik and his company were found guilty at Brighton Crown Court of misleading customers.
He was jailed for 14 months and disqualified from being a director for four years, but Proceeds of Crime Act proceedings are still pending.
Richard Sargeant, Trading Standards team manager, said: "This was a complex investigation for our team and I am very pleased with the outcome.
"I would urge anyone using a Gatwick meet and greet business to only use a Trading Standards-approved company."