The average train between Howth and Portmarnock takes 23 min and the fastest train takes 16 min. There is a train service every few hours from Howth 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 hourly between Howth and Portmarnock. The earliest departure is at 6:00 AM in the morning, and the last departure from Howth is at 4:15 PM which arrives into Portmarnock at 4:32 PM. All services require a transfer, and take on average 23 min. The schedules shown below are for the next available departures.

17 min • 1 change

17 min • 1 change

37 min • 1 change

17 min • 1 change

45 min • 1 change

30 min • 1 change

28 min • 1 change

34 min • 1 change

45 min • 1 change

30 min • 1 change

28 min • 1 change

34 min • 1 change
Want to know about travelling from Howth 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 Howth to Portmarnock. However, there are services departing from Howth station and arriving at Portmarnock station via Howth Junction. The journey, including transfers, takes approximately 23 min.
Howth to Portmarnock train services, operated by Iarnród Éireann (Irish Rail), depart from Howth station.
Howth to Portmarnock train services, operated by Iarnród Éireann (Irish Rail), arrive at Portmarnock station.
The distance between Howth and Portmarnock is 6.2 km. The road distance is 9 km.
You can take a train from Howth to Portmarnock via Howth Junction in around 34 min.