All Irish airports will remain open until at least 1pm tomorrow afternoon, the Irish Aviation Authority has said in its latest update on the volcanic ash cloud.
The plume of ash cloud from the Icelandic volcano currently measures approximately 2,400 miles long and 1,250 miles wide is still positioned over the atlantic from Greenland to the Iberian peninsula, the IAA said.
"For the past number of days, North Atlantic routes have been North of Iceland and as far South as Santiago in Spain. The IAA expects an improvement today with routes available just North of Ireland. Continuing difficulties may be encountered with Iberian/Canary routes."
The Volcanic Ash Advisory Centre (VAAC) and the Central Flow Management Unit (CFMU) at Eurocontrol continue to provide the authority with up-to-date information on the ash cloud.
A further update will be issued this evening.
European air traffic control agency Eurocontrol said areas of higher ash concentration could move in a north-easterly direction this afternoon cutting across the Iberian Iberian Peninsula and into south east France.
These areas are of high altitude and are not expected to impact airports.
Seven airports in Spain have been closed according to the country's Spain's air traffic control agency Aena.
Airports include four on the Canary Islands and three in south-west Spain. Casablanca, Rabat and Tangiers airport have been closed in Moroccoas unsafe ash levels extend from the Canary Islands across Spain and Portugal as far as the Pyrenees.
Aer Lingus has cancelled a number of flights scheduled to depart and arrive today between Dublin, Cork and Belfast to mainland Spain (Malaga) and the Canary Islands (Lanzarote, Las Palmas, Tenerife and Fuerteventura).
The airline said it would continue to send SMS messages to customers on affected flights.
Ryanair has cancelled flights from several airports including Barcelona, Faro, Gran Canaria, Madrid and Malaga.
All intending passengers are advised to check with their airlines before travelling.