Originally Posted by
FLYGVA
Enter "Tegel" in field From and "Schönefeld" in field "To"and the time. Click on Search. You will most likely now see all entries matching "Tegel" and "Schönefeld". Select "Flughafen Tegel (Airport)" and "S FLughafen Berlin Schönefeld" from the drop down boxes and click on search connection and al available journeys are shown. There is no direct line, you have to change at least once from bus to train / S-Bahn.
One point of order, make sure it's FLUGHAFEN Tegel and not just "Tegel" as the station "Tegel" is not really near the airport.
And definately heed the advice of transfering to the S9 at Hauptbahnhof. I forgot that the S9 line goes there. For whatever reason, I thought you had to take the S3, 7, 75 or 5 towards Osterkreuz to link up.
If you are just taking carry-ons, better to save the $ and take the public transport. In some ways, it may even be faster to do that as you will be entering Mitte when traffic starts to pickup.