I need to get from dock at Kattendijkdok in Antwerp to the Brussels airport on July 5th for a 10:30 am flight. I would need to leave the dock by 6:30 am and it is a Sunday. How difficult will it be to get transportation that early and on a Sunday?
You'll probably need to take a taxi from the dock to Antwerpen Centraal. Trains to Bruxelles-Nord leave as early as 04:44 and you can connect there with trains to the airport. For timetables go to www.bahn.de. Click on the flag drop-down menu for English. Enter Antwerpen Centraal as your departure point and Bruxelles-Nat.-Aéroport as your arrival station. After you get summary timetables, click on the arrow to the left of each departure time to see the connecting points.