On a trial basis, the Swiss Federal Railways are running a new early connection to Geneva Airport on selected days. This is intended to make it easier for passengers to reach departures between 6 a.m. and 00 a.m.
Starting from Biel with a few intermediate stops, a special train will initially run on December 23rd and 24th, 2023. According to Geneva Airport, this is a test run. The results should then show whether it is worthwhile to put an early feeder train on the rails in the long term.