Transatlantic flights were operating as normal due to new jet-engine tolerance levels despite the Icelandic volcanic ash cloud causing further airport closures in Ireland.
The new tolerance levels, signed off by engine manufacturers, allow planes to fly above the ash cloud.
Ireland-based airlines faced more irate passengers as the Irish Aviation Authority (IAA) closed the country’s airspace after winds yet again blew ash towards Europe.
The flight restrictions, imposed from 7am local time, are set to stay in place until 1pm today.
Dublin, Shannon, Cork, Knock, Donegal, Waterford, Kerry, Galway and Sligo airports were all affected.
The IAA said the decision was entirely based on the safety of crews and passengers. The situation will be reviewed as the week goes on.
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By GlobalDataThe closures follow weeks of disruption after volcanic ash clouds sparked safety fears on 15 April, closing airports across western and northern Europe, and leaving hundreds of thousands of travellers stranded.