How many passengers did the airport in The London Borough of Hillingdon have in 2016?
London Borough of Hillingdon: The London Borough of Hillingdon (   ) is the westernmost borough in Greater London, England which had a population of 273,936 according to the 2011 Census. London Borough of Hillingdon:  Today, Hillingdon is home to Heathrow Airport and Brunel University, and is the second largest of the 32 London boroughs by area. Heathrow Airport:  In 2016, it handled a record 75.7 million passengers, a 1.0% increase from 2015.
75.7 million