Marketplace website Onbuy.com compiled a list that found York has received nearly 170,000 searches in the past month.
The city was far more popular than the second-placed city, Bath, which received 40,000.
There were also 96,000 searches for hotels in York.
The top 10 also featured Perth, Inverness, Chester, Bangor, Manchester, Cambridge, Newcastle and Liverpool.
With uncertainty over overseas travel, particularly to Europe, remaining, Britons are expected to holiday at home in large numbers this summer.