Air transport in the United Kingdom is the commercial carriage of passengers, freight and mail by aircraft, both within the United Kingdom (UK) and between the UK and the rest of the world. In the past 25 years the industry has seen continuous growth, and the demand for passenger air travel in particular is forecast to increase from the current level of 236 million passengers to 465 million in 2030. One airport, London Heathrow Airport, is amongst the top ten busiest airports in the world. More than half of all passengers travelling by air in the UK currently travel via the five London area airports. Outside of London, Manchester Airport is by far the largest and busiest of the remaining airports, acting as a hub for the 20 million or so people who live within a two-hour drive. Regional airports have experienced the most growth in recent years, due to the success of 'no-frills' airlines over the last decade.
In 2013 the UK had the third highest number of passengers carried of any country, behind only the United States and China.
Imperial Airways and British Airways Limited were merged and nationalised as BOAC in 1939.
In the 1970s, aircraft manufacturers were merged and nationalised as British Aerospace.
In the 1980s, British Airways and British Aerospace were privatised again by the Thatcher government.
The advent in the mid-1990s of ’no-frills’ carriers, such as easyJet and BA's Go, has had a significant impact on air travel in the UK. In 2005 these airlines carried 77.5 million passengers, up from just 4.3 million in 1996. They are responsible for the growth of regional airports, operating from 35 airports in 2006 compared to 10 in 1996, and increasing the choice of international destinations, serving 150 in 2006, compared to 12 a decade earlier. The annual rate of growth in the overall demand for air travel has remained stable since 1975, and current growth is being served by the no-frills airlines at the expense of traditional carriers which, since 2000, have experienced flat or declining traffic levels. In response, traditional carriers have lowered costs to compete more effectively on price, leading to lower prices on the short haul routes served by this sector, especially in business fares. They have also limited or reduced capacity and in some cases launched no-frills subsidiaries of their own.