Most people arriving in Northern Ireland will arrive at Belfast - either by train from Dublin, Larne or Derry, by ferry from Stranraer or Liverpool or by air at either Belfast City Airport or Belfast International Airport. Bangor is 12 miles down the road from Belfast and easily reached from any of these entry points.
If travelling by air arriving at Belfast City Airport, the internal airport bus will drop you at the train station (Sydenham) close to the Airport - ask at the Information Desk for details. A single journey from Sydenham station to Bangor takes 20 minutes and costs about £4 with trains every 20-30 minutes.
Arriving at the International Airport you will need to get the Airport Bus to the Belfast Bus Centre which takes about 30 minutes. You can then take either the train or bus to Bangor from there, again taking about 30 minutes and costing about £4.
Local buses meet ferries arriving in Belfast Harbour to take you to the bus and train stations, all of which have regular services to Bangor.
Arriving by train into Belfast Central, you just have to change platforms to get the Bangor train.
On arriving in Bangor, at the integrated train and bus station, a short walk down town will take you to the tourist information centre inthe Tower Hosue by the Marina. Stop at the Heatherlea tearoom on the way for a coffee and bacon roll!