Demand for holiday packages increased by a fifth in quarter one of 2014 compared to the same period the previous year, according to Expedia.
Furthermore, the site found that those who book packages – hotel plus flight or car – tend to book further in advance and stay for longer.
Data from the first quarter showed that package travellers stayed a day and a half longer on average and booked more than three weeks further in advance than guests booking rooms only.
Guests to the UK stayed more than three nights on average, whereas travellers booking standalone room nights stayed just over one and a half.
Package guests also booked nearly a month and a half in advance, whereas guests booking a standalone room night waited almost a month later to book.
Expedia senior director of market management for Northern Europe Isabelle Pinson said: “We encourage our hotel partners to discuss the options available for package offers, particularly in the build up to a busy summer, after a winter punctuated with poor weather.
"With several airlines announcing new routes into the UK recently, this is a prime time to consider holiday package offers.”
The UK destinations that ranked top for package stays in the UK were London, Edinburgh and the Channel Islands.
Manchester was the fastest-growing holiday package destination, experiencing an increase in demand of almost 30%.
The top international feeder markets for package holidays to the UK were USA, France, Germany and Italy.