The average train between Belfast and Portmarnock takes 3h 49m and the fastest train takes 2h 23m. The train service runs several times per day from Belfast to Portmarnock. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Trains run 4 times a day between Belfast and Portmarnock. The earliest departure is at 6:00 AM in the morning, and the last departure from Belfast is at 9:00 PM which arrives into Portmarnock at 7:13 AM. All services require a transfer, and take on average 3h 49m. The schedules shown below are for the next available departures.

2h 23m • 1 change

2h 41m • 1 change

2h 26m • 1 change

2h 30m • 1 change

2h 23m • 1 change

2h 41m • 1 change

2h 26m • 1 change

2h 30m • 1 change

2h 23m • 1 change

2h 41m • 1 change

2h 26m • 1 change

2h 30m • 1 change

2h 23m • 1 change

2h 41m • 1 change

2h 26m • 1 change

2h 30m • 1 change
Want to know about travelling from Belfast to Portmarnock? 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 train from Belfast to Portmarnock. However, there are services departing from Belfast station and arriving at Portmarnock station via Drogheda Macbride. The journey, including transfers, takes approximately 3h 49m.
Belfast to Portmarnock train services, operated by Iarnród Éireann (Irish Rail), depart from Belfast Great Central station.
Belfast to Portmarnock train services, operated by Iarnród Éireann (Irish Rail), arrive at Portmarnock station.
The distance between Belfast and Portmarnock is 131.4 km. The road distance is 169 km.
You can take a train from Belfast Great Central to Portmarnock via Drogheda in around 3h 8m.