Agents are being advised to hold on to pipeline money for bookings with ski specialist Harris Holidays, which has ceased trading.
The company, which was based in Southampton and held Atol 6624, traded under the names Mountainweekends.com, Ski Weekends, Skiweekends.com, SkiWeeks.co.uk and snow-academy.com.
It also operated the website international-academy.com.
The CAA said: “If you are a travel agent of Harris Holidays Ltd and you are currently holding consumer payments which you have not yet paid to Harris Holidays Ltd, you are advised not to refund consumers with these funds until you have received instructions from the Air Travel Trust.
“Travel agents will be individually contacted by the CAA with specific instructions for these bookings.”
The CAA said it would publish a specific claim form shortly. It added: “Please do not use claim forms from other failures as these cannot be accepted.”