"Flights, which were scheduled to land at the Zaventem airport had been redirected to other regional airports," the source said.
Flights scheduled to arrive in Brussels airport had been redirected to Liege and Antwerp, among other regional airports following two explosions in Zaventem.
"Traffic had been redirected to Liege, Antwerp…" the source said.
According to the source, the Charleroi and Ostend airports will also be receiving some of the flights initially scheduled to arrive in the Brussels airport.
The source did not clarify the number of flights that had been redirected so far.
Several international airlines, including Russia's Aeroflot and Finnish Finnair, have diverted their flights to Amsterdam or Dusseldorf, as the Zaventem was closed and evacuated.
Dublin-based Ryanair airline said it had canceled its flights from Brussels following explosions.