The TIER fleet is available daily during the following hours:
Berlin, Bonn, Düsseldorf, Hamburg, Cologne, Munich, Vienna: 24/7
Frankfurt, Münster: Mon. – Thu. 7 am – 10 pm / Fr.i 07 am – midnight / Sat. 09 am – midnight / Sun. 09 am – 10 pm
Hannover, Heidelberg, Ingolstadt, Ludwigshafen, Mainz, Mannheim, Wiesbaden: Sun. – Thu. 8 am – 11 pm / Fri./Sat. 09 am – midnight