Absolutely a true story: the pilot of an SAS plane,
on a domestic flight in Sweden, called up an airport control tower for
clearance to land and found no one at home.

No one realized that the controller at Kristianstad
Airport had not returned from vacation and the plane was left to circle
for 30 minutes while a replacement was found.

The Dash-8 aircraft, on a flight from Stockholm with
30 passengers, eventually landed safely and the Scandinavian airline said
there was never any danger to the plane or those on board.

Airport officials said that a scheduling mix-up was
responsible for the incident and the absence of a controller was not noticed
until the SAS pilot called the control tower.

Source: Airwise.com