Most trains run directly from Bangor to Portadown and vice versa (stopping at all stations on the way), though some follow only the routes shown above.
The typical off-peak service on this route is 2tph (trains per hour). The last train of the day arrives in Bangor and Portadown shortly after midnight.
Services Belfast to Whitehead are typically every 30 mins daytime and hourly evenings and weekends. Trains extend to Larne typically every hour.
The concept of Suburban was a Northern Ireland Railways marketing campaign in the late 1980s and early 90s when the network was divided into Suburban (near Belfast) and Intercity (beyond), leaving the odd concept of Intercity trains running between Coleraine and the seaside town of Portrush (details). This division is no longer recognised.
