On weekdays the first train departs Cosham at 06:30 arriving at Portsmouth Harbour at 06:47. The last train departs Cosham at 00:09 arriving at Portsmouth Harbour at 00:25. These timings are based on the "railway day" which begins at 04:30.
Journey Time
On trains operated by Great Western Railway (GW) the average journey time is 15 minutes. On trains operated by South Western Railway (SW) the average journey time is 19 minutes. The overall average journey time between Cosham and Portsmouth Harbour is 18 minutes.