An airport was a location where aeroplanes took off and landed.
On 28 February 1981, Tegan Jovanka was on her way to Heathrow Airport to begin working as an air stewardess when she inadvertently joined the Fourth Doctor on his travels. (TV: Logopolis) The Fifth Doctor finally returned her to the airport in 1982. (TV: Time-Flight)
When Rex Matheson used Central Intelligence Agency resources to bring Gwen Cooper and Jack Harkness to the US during the Miracle Day event on 22 March 2011, the plane was landed at Washington Dulles International Airport. (TV: Rendition)