Flight bookings to the UK jumped since June, driven by the sharp fall in the pound following the vote to leave the European Union.
Overall, there were 4.3% more flights booked to the UK in the 28 days following the vote than last year.
Bookings from Hong Kong leapt by 30.1%, while they were up by 9.2% from the US and 5% from Europe.
Travel researcher ForwardKeys said Brexit had had an “immediate, positive impact” on tourism to the UK.
The organisation, which analyses 14 million reservation transactions a day to monitor future travel patterns, said: “The most favourable exchange rate in decades is probably the major driver for the uptake in bookings to Britain.”
While the pound has fallen about 13% against the dollar since its peak on 23 June, the day of the referendum, it has also fallen about 10% against the euro. A lower pound cuts the cost of a holiday for foreign visitors to the UK.
“In the months ahead our data will show whether this post-Brexit bounce is sustained”, said Olivier Jager, ForwardKeys chief executive.
The company said worldwide economic uncertainty, terror attacks in France and Belgium and air traffic disruption also benefitted UK tourism.