Group sales across the homeworking group have increased by 11% year-on-year over the past four weeks, with leisure business up by 17% compared with the same period last year.
The business said demand has "remained positive" across a range of destinations and travel types during the early stages of the peak summer season.
Travel Counsellors said its cruise sales have increased by 24% over the past four weeks, while Mediterranean travel is up by 13%, with Italy and Greece proving the main draws. Long-haul has also chipped in, with sales to the USA up by 10%, Africa by 69% and South East Asia by 32%.
Steve Byrne, Travel Counsellors' Global Chief Executive, said the results came as "further evidence" of the strength of its model, the commitment of its TCs and the trust their clients place in them.