ATOL was first introduced in 1973, as the popularity of overseas holidays grew. After a number of travel company failures left people stranded, the UK Government realised consumers required protection should firms in the unregulated travel sector fall into difficulties.
The scheme was designed to cover charter flights and package holidays, and functioned well for years. However, the holiday market has changed considerably and a rise in online booking means many people now book the components of their holidays separately.
As a result, changes were made to the ATOL scheme in April 2012. It now covers all overseas air holidays where a flight and accommodation have been booked together. It also covers some flights booked separately, and applies in some other circumstances too.