iniBuilds' largest airport yet: Heathrow International (EGLL) for Microsoft Flight Simulator. As the major beating heart of London's aviation scene, and the third busiest airport in the world, it's an essential airport for any seasoned flight simmer. The airport is known for being the home of the UK's flag carrier British Airways and the primary operating base of Virgin Atlantic. Being used by over 80 airlines and with flights to over 180 destinations, it's safe to say there are a plethora of ro... iniBuilds' largest airport yet: Heathrow International (EGLL) for Microsoft Flight Simulator. As the major beating heart of London's aviation scene, and the third busiest airport in the world, it's an essential airport for any seasoned flight simmer. The airport is known for being the home of the UK's flag carrier British Airways and the primary operating base of Virgin Atlantic. Being used by over 80 airlines and with flights to over 180 destinations, it's safe to say there are a plethora of routes to keep you amused. Heathrow's impressive area covers over 12 sq/km of area in the simulator. To compliment that, it features custom taxi signs, realistic terminals, custom ground service equipment and plenty of points of interest and surrounding buildings to provide a redefined level of realism plus many more features.