... was said in 2019 (by Wikipedia) to have been the world's busiest airport, in terms of passenger numbers, since the year 2000. In terms of number of take–offs and landings it had been the busiest every year since 2005, except 2014 when it was second to Chicago's O'Hare Internatonal.
In 2018, according to preliminary figures, London Heathrow was the world's seventh busiest airport by passenger numbers, after Hartsfield–Jackson, Beijing Capital, Dubai International, Los Angeles International, Tokyo Haneda, and O'Hare.
© Haydn Thompson 2019