ScotRail operates a train from Helensburgh to Glasgow hourly. Tickets cost $8 - $11 and the journey takes 40 min. Alternatively, First operates a bus from Helensburgh to Glasgow every 30 minutes. Tickets cost $4 - $6 and the journey takes 1 h 27 min.
From Helensburgh Central train to Glasgow Queen Street Low Level. 40 min £7. From Helensburgh Railway Station bus to Glasgow, Hielenman's Umbrella (Hope Street). 1 h 27 min £3. From Helensburgh taxi to Glasgow. 38 min £45. From Helensburgh drive to Glasgow. 38 min £4.