Introduction: Heathrow Airport is referred to be the "primary hub" of civil aviation in the United Kingdom. It is the busiest airport in the whole United Kingdom. It is situated 3 miles south of Hayes and 3 miles north-east of Stainesupon-Thames, in the western part of the town of Hounslow, in the United Kingdom. Heathrow Airport serves a total of 185 destinations in 84 countries, with over 84 airlines using the facility. It accounts for more than 30 percent of all air passenger traffic in the United Kingdom, with more than 35 percent of passengers being mostly business travellers, according to the company.