The line operates at 20-minute intervals between Weßling and Munich Airport. Two out of three trains an hour continue from Weßling to Herrsching, so that the gap between trains alternates between 20 and 40 minutes. It is operated using class 423 four-car electrical multiple units, usually as two coupled sets. In the evenings and on Sundays, they generally run as single sets.
The line runs over sections built at various times:
from Munich East to Ismaning over the Munich East–Ismaning railway, opened by the Royal Bavarian State Railways. The section through Ismaning was placed underground in 1992 and the section through Unterföhring station in 2005.[5]
S-Bahn services commenced in 1992 as S-Bahn line between Munich Airport and Pasing. It was later merged with line , which had previously run between Nannhofen (now Mammendorf) and Ismaning. Since December 2009, line has run from Pasing to Herrsching instead of Mammendorf, taking over a section of the former line from Herrsching to Ebersberg.
Operation
Munich Airport – Herrsching
Munich Airport – Weßling
Munich East (Ostbahnhof) – Germering-Unterpfaffenhofen/Gilching-Argelsried (Monday to Friday only)