London's Heathrow airport is a worldwide hub of international travelers. It's no surprise that The Guinness World Records states that London's main airport has more international travelers passing through than any other airport with 64.7 million in 2011.
Other airports may not be as busy or as much of a hub for international travel, but they do have their own record breakers. For example, Papa Westray and Westray which are islands in the Scottish Orkneys holds the Guinness World Record for the world's closest airports. A flight between the two takes an average of 96 seconds.
Qamdo Bangda Airport in Tibet is the world's highest airport, sitting 14,219 feet above sea level and Hartsfield Jackson Atlanta International Airport has two records. It is the the busiest airport in terms of planes landing and taking off and it has the most passengers traveling through with 92 million in 2011.
Dubai is home to the world's largest airport building. The 12.76 million square foot structure, which is Terminal 3 at Dubai International handles Dubai's 60 million travelers a a year.
Mataveri International Airport on Easter Island is the world's most isolated airport which is 3,759 km from Santiago, Chile, it's nearest airport.
The world's shortest commercially serviceable runway is Juancho E. Yrausquin Airport on the island of Saba, Netherlands Antilles, in the Carribbean. At 396 meters, the runway is the shortest in the world.
The World's Best Airport award at the World Airport Awards went to Hong Kong International Airport. With $20 billion construction projects, it's no wonder the state-of-the art airport tops that list.