An extra 200,000 holidaymakers are predicted to book versus January 2025, which saw around 4.3 million people choose an Atol-protected package holiday.
This record demand is expected to surge during the first Saturday of the year (3 January), commonly known as "Sunshine Saturday", and continue through to September 2026.
Selina Chadha, group director for consumers and markets at the UK Civil Aviation Authority, said: "Sunshine Saturday is seen as the busiest day of the year for people booking holidays, as travellers look for bargain deals on their next getaway."