Advance Single fares

Book early to get our best deals.

Booking three months in advance

Reservations for GWR West local services, including Cardiff - Portsmouth, are now open as the following:

Service Availability
Saturday services Until Saturday 23 February*
Sunday services Until Sunday 24 February*
Weekday services Until Friday 1 March*

Booking six months in advance

GWR are now able to offer an extended booking period for weekday travel only for high-speed services operating to/from London Paddington (including the Night Riviera Sleeper service)

Reservations are available on these journeys on the following dates:

All weekdays until 17 May 2019*

We don't expect our timetable to change on these dates, but check your journey 4 weeks before you travel.