Scotland and Northern Ireland are only about 12–13 miles (19–21 km) apart at their very closest point across the sea, and roughly 55 miles (about 88 km) apart on the main ferry route.

Key distances

  • The narrowest sea gap is across the North Channel, between the Mull of Kintyre in Scotland and Torr Head in Northern Ireland, at about 13 miles (21 km).
  • Commonly quoted travel distance on ferry routes (e.g., Cairnryan to Belfast/Larne) is about 55 miles, or 88 km, which takes around 2–2.5 hours by ship.

Why answers vary

People asking “how far is Scotland from Northern Ireland” may mean different things:

  • Geographic closest point across the water: about 12–13 miles.
  • Typical travel route distance by ferry between main ports: about 55 miles.

So, in everyday terms, the landmasses are very close—on a clear day, it is possible to see the Scottish coast from parts of Northern Ireland because the strait is relatively narrow.