Line S8 is a line on the Munich S-Bahn network. It is operated by DB Regio Bayern. It runs from Herrsching via Weßling, Pasing, central Munich and Munich East to Munich Airport station. The line is operated 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.