At the Brussels Airport, you can get tested for COVID-19 using a PCR test. The COVID-19 Test Center is located just outside the airport terminal on the departures level for departing passengers and on level 0 (bus station) for passengers arriving in Belgium.
A Standard PCR Test costs 67 euros and the results are available for 24 hours. A rapid PCR test costs 135 euros. If the rapid PCR test is performed between 3:30 am and 6 am, you will get the result a few hours later, around 11 am. If the test is done between 6 am and 8 pm, you will have to wait 3 hours to get your result and if the test is done between 8 pm and midnight, you will receive the result the next day around 11 am. An antigen test costs 55 euros and the results are available in 50 minutes.
The COVID-19 Test Center at the Brussels Airport is open 7 days a week, including Sundays and public holidays. The Test Center for departing passengers is open non-stop from 3:30 am to midnight. The Test Center for arriving passengers is open non-stop from 6 am to midnight.