Airspace over Northern Ireland and Scotland will be closed from 7am tomorrow due to the Icelandic ash cloud, the UK's Civil Aviation Authority has said tonight.
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Republic of Ireland airspace remains open but the Irish Aviation Authority is to review the situation overnight. Passengers are still advised to check airline websites.
The CAA said: 'Forecasts show that levels of ash in the atmosphere over Scotland and Northern Ireland will exceed the concentrations that engine manufacturers have agreed are safe for operations.
'Unfortunately, this means that the CAA anticipates all Scottish and Northern Ireland airports will be closed from 07:00 local time tomorrow.'
The CAA said there are concerns that the ash cloud will continue to move south.
Aer Lingus has confirmed that flights scheduled to depart and arrive into Glasgow and Edinburgh from Dublin and Cork have been cancelled up to 1pm tomorrow.
All of its flights to and from Belfast International Airport to Britain and Europe have been cancelled until 1pm.
European flights to and from the Republic and Northern Ireland resumed earlier today following disruption caused by the ash plume.
The IAA took the decision to re-open airspace after reviewing the movement of the ash plume.
Speaking on RTÉ Radio, IAA Chief Executive Eamonn Brennan said that the threat of travel disruption would remain for a number of months.
