Skylink Travel & Tours Ltd (Atol 9839) failed on Friday (22 January).
The business, which was headquartered in north-west London, was licensed to carry 500 Atol-protected passengers.
Website skylinkworld.co.uk has been taken down and replaced with the message "ceased trading".
The firm sold a range of trips around the world, including adventure tours and cruises.
Its last filing with Companies House came last March, and covered trading to 31 October 2019.
The accounts list an Anil Bhagi as the company’s sole director.
"Skylink Travel & Tours Ltd Atol 9839 has ceased trading on 22 January 2021," said the CAA.
"We are currently collating information from the company and will update this page as soon as possible.
"A specific claim form link will be published shortly. Please do not use claim forms from other failures as these cannot be accepted."
