A 6:00 flight from BER means leaving Berlin around 3:30, when the network is at its thinnest. Which train or night bus runs from where you sleep, why the night of the week matters, and when a taxi is the better plan.

On 13 December regional trains return to the Stadtbahn, the RE3 and RE5 go hourly and the S1 and S5 lose trains in the rush hour. Three weeks later the VBB fares rise. Here is what changes on your line, from which date, and which tickets to buy before January.