The bumper booking day was recorded on Tuesday (22 November), during the B-Corp certified operator’s annual Cyber Sale.
It was also the best booking day for UK sales since January 2020, where top-selling destinations booked by Brits were Costa Rica, Vietnam and Morocco.
Hazel McGuire, Intrepid’s general manager UK and Ireland, said: "This is an incredible result and shows travel really is back, for good.
"There’s huge demand for sustainable, experience-rich travel. Customers are more aware of the impact travel can have on people and the planet and want to make sure they’re being responsible travellers."
The record day comes as the business continues to grow its UK trade team, as it targets further growth from the UK agent market.
Carrie Grant joined the industry partnerships team as senior partnerships manager and Molly Cofman-Nicoresti was appointed as industry partnerships manager.