There are 101 primary airports in United Kingdom distributed among 88 cities. United Kingdom has the 8th largest tourism market in the world by air, with 31,169,000 tourists arriving each year.*
The national aviation authority for the country is Civil Aviation Authority. The busiest airport is London Heathrow Airport with a total of 73,371,195 passengers.
*World Tourism Organization, Yearbook of Tourism Statistics, Compendium of Tourism Statistics and data files.