British airspace was shut down this afternoon for several hours after a “computer glitch” halted flights to several airports. That included Heathrow, one of Europe’s busiest hubs — and the ripple effect was felt by flyers around the globe.
In today’s Geo Quiz we asked what the five busiest airports are. When it comes to international traffic, the most bustling are: Number 5: Hong Kong, Number 4: Frankfurt, Number 3: Amsterdam, Number 2: the Charles de Gaulle airport in Paris…And the number one busiest airport, it serves 62 million passengers a year, is London’s Heathrow Airport.