The average bus between Belfast and Dublin Castle takes 2h 49m and the fastest bus takes 2h 37m. There is a bus service every few hours from Belfast to Dublin Castle. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Buses run hourly between Belfast and Dublin Castle. The earliest departure is at 1:10 AM at night, and the last departure from Belfast is at 11:10 PM which arrives into Dublin Castle at 2:20 AM. All services require a transfer at Dublin, O'Connell Street Upper (The Gresham Hotel) and take an average of 2h 49m. The schedules shown below are for the next available departures.

2h 51m • 1 change

2h 51m • 1 change

2h 53m • 1 change

2h 53m • 1 change

3h 11m • 1 change

2h 41m • 1 change

2h 43m • 1 change

2h 51m • 1 change

3h 11m • 1 change

2h 41m • 1 change

2h 43m • 1 change

2h 51m • 1 change
Want to know about travelling from Belfast to Dublin Castle? We have put together a list of the most frequently asked questions from our users such as: What is the cheapest mode of transport? What is the quickest option? How much do tickets usually cost? and many more.
No, there is no direct bus from Belfast to Dublin Castle. However, there are services departing from Belfast station and arriving at Dublin Castle station via The Gresham Hotel. The journey, including transfers, takes approximately 2h 49m.
Belfast to Dublin Castle bus services, operated by Aircoach, depart from Europa Bus Centre station.
Belfast to Dublin Castle bus services, operated by Aircoach, arrive at The Gresham Hotel station.
Book your Belfast to Dublin Castle bus tickets online with Aircoach and Dublin Bus.
The distance between Belfast and Dublin Castle is 142.1 km. The road distance is 173 km.
Aircoach operates a bus from Europa Bus Centre to The Gresham Hotel hourly. Tickets cost €15–21 and the journey takes 2h 25m.