The operator said the recent spell of warm weather had encouraged more people to book summer getaways, most notably last-minute June trips – particularly "last-minute, short, sunny getaways" – and school holiday departures.
Sales for June are up by 20% year-on-year, said Tui UK and Ireland; Spain's islands have seen the strongest demand, with bookings for the Balearics up 60% year-on-year during the heatwave period, and the Canaries by 50% year-on-year.
And while seven-night holidays remain the most popular, demand for four-night breaks saw the largest week-on-week increase, rising by 40%.