The nearest airport is in Brussels Airport (BRU), located 4.1 mi (6.5 km) from the city center. If you're unable to find a flight that fits your schedule, you might consider flying into Charleroi (CRL-Brussels South Charleroi), which is 27 mi (43.4 km) away.
It's easy to get around Sint-Lambrechts-Woluwe by catching a ride on the metro at Roodebeek Station, Woluwe Shopping Tram Stop or Tomberg Station.