Airspace over parts of Scotland and Northern Ireland have been closed again today, as the ash cloud from the Icelandic volcano spreads across British skies.
Glasgow and Prestwick airports will be closed today, until at least 7pm, as well as Stornoway, Benbecula, Tiree, Islay, Barra and Campbeltown. Inverness airport is also closed, but expected to reopen after 1pm.
In Northern Ireland, Derry airport is closed this morning, but should reopen after 1pm, according to current forecasts from the Civial Aviation Authority.
Belfast International and Belfast City airports will be closed from 1pm this afternoon until 7pm.
Current forecasts show that Edinburgh airport and airports in the north of England may also be affected, if the ash cloud blows further south.
The 60 mile buffer zone imposed around high concentrations of ash is close to Edinburgh, Carlisle, Blackpool, Liverpool and Manchester airports, said the CAA: "Based on current forecasts CAA has assessed that these airports can safely remain open, but passengers should check with their airline before travelling to the airport, as the situation is dynamic."
The CAA does not expect airports in the south east of England to be affected tomorrow.
UPDATE: Edinburgh airport has been closed until at least 7pm.