It has now notched 17 consecutive months of unparalleled sales.
Group sales for June hit £76.6 million, up 14.5% on the previous year, while leisure sales for the month reached £54.9 million.
The most popular destinations for those still booking for this summer are Mallorca, the Greek Islands, Croatia and Portugal.
The company also reported travel agent sales of over £4.3 million on the last Friday in June – the most successful day of the month.
June saw 64 Travel Counsellors celebrate their best-ever sales month, with four of those exceeding £300,000 in sales.
One generated £500,000 in sales in just one month.
In addition, group corporate sales remain strong with £21.7 million sales in June, up 13.2%.
Kirsten Hughes, UK MD, said: “It is great to see sales figures still looking strong, with growth continuing each month.”
“We have seen a surge of demand for last-minute holidays as well as people now planning further ahead.”
Tags: Kirsten Hughes, Travel Counsellors, travel agent sales