Brussels Airport (also called / (Brussels-National) or Brussel-Zaventem) is an international airport  northeast of Brussels, the capital of Belgium. In 2015, more than 23 million passengers arrived or departed at Brussels Airport, making it the 21st busiest airport in Europe. It is located partially in Zaventem, partially in the Diegem area of Machelen, and partially in Steenokkerzeel, in the Flemish Region of Belgium. It is home to around 260 companies, together directly employing 20,000 people and serves as the home base for Brussels Airlines, Jetairfly and Thomas Cook Airlines Belgium.