There is an excellent public bus service to Penarth from Cardiff City Centre. Buses run every 10 minutes in the daytime until 6.30pm in the evening, and half-hourly after that until 11.00pm. Catch you outbound bus in WOOD STREET - opposite the new BBC HQ.
Service 92 to Penarth - Cefn Mably via Town Centre
Service 93 to Dinas Powys, via Town Centre
Service 94 to Sully & Barry, via Town Centre
Service 89 via Cardiff Bay, Marina and Town Centre
Service 88 Penarth to Barry
Service 99 Penarth Town Centre to Esplanade and Cosmeston Lakes Country Park. (Summer Weekends only).
Services 92, 93 & 94 depart from Wood Street, Cardiff [Inbound and Outbound Stop].
Service 89 departs from Custom House St., Cardiff.
Best Value is a Day to Go ticket for all day travel on all buses in the Cardiff & Penarth travel area. Price around £3.85(2018). Must be purchased from the Driver on first bus boarded. Please note - only CASH is accepted (or a Welsh Bus Pass or a Cardiff Bus Pass).
Penarth is easily accessed by train from London, Birmingham, Bristol and Southampton by regular direct trains to Cardiff. Depart London (Paddington) every hour taking 2hrs 10 minutes to Cardiff, and regularly from other cities.
Change at Cardiff Central to Platform 8 and take the Penarth Train every 15 minutes throughout the day, 30 minutes at nightime. Journey Time just 12 minutes. Buy a Return Ticket for greater savings for same day travel.
Local trains towards Penarth run from Merthyr, Aberdare, Rhymney & Caerphilly, changing at Cardiff Central, Platform 7 or 8.
There are two types of taxi in the Cardiff area. Hackney Cabs, painted black and white, which can be hailed at Central Station and other taxi ranks in the city centre. And Private Hire, which MUST be ordered over the telephone from one of the Cardiff based companies. From 2018 the new Online App company OLA started operating in and around Cardiff and Penarth. Fares are broadly similar, but you are not able hail a Private Hire car in the street, as it is illegal for them to pick you up without prior booking by phone or via an online App. A typical fare to Penarth is £12-15 in 2018/19, but a little higher after 11pm. Penarth based taxis may also pick you up if you prefer, but only by prior arrangement.
Cardiff International Airport is located just a 20 minute ride from Penarth. Services across Europe and for Long Distance, on Qatar Airlines, you can connect into the Far East, Singapore and Australia with a single change at Doha. Inbound from the USA, you can enter via Dublin, clearing Customs along the way.