Bomb threats were made against two planes on Wednesday evening, with both planes landing safely at Brussels airport in Zaventem.
All passengers disembarked without incident, but Brussels authorities took the threat seriously. The planes are now being inspected.
One plane, SAS flight SK4745 from Oslo, landed safely at 19.19 local time.
The second, SAS flight SK2591 from Stockholm, landed safely at 19.37 local time.
It is not clear yet who has made the threats, which were reportedly issued 20 minutes before the plane was due to land. Some reports suggested that the threats were made via Twitter.
Brussels remains on high alert after a series of attacks in Belgium and across Europe.
Emergency alert lifted in Brussels
It appears that the alarm is over.