Aer Lingus has said it will run a full transatlantic schedule between Ireland and the US tomorrow and it will also operate flights to Spain, Portugal and Italy up to 1pm.
In a statement this evening, the company said all flights from Dublin, Cork and Belfast to Spain, Portugal and Italy with a scheduled departure time up to 1pm will operate as scheduled on Tuesday.
It also aimed to operate the majority of its European schedule after that time but will confirm the status of flights on its website in the morning.
On itsLondon routes, all flights from Dublin, Cork, Knock, Shannon and Belfast to London Heathrow and Gatwick with a scheduled departure time up to 1pm, have been cancelled.
Operations on these services after that time remained "under review", Aer Lingus said.
"However we hope to operate the majority of the schedule between Ireland and London for the remainder of the day."
Aer Lingus regional flights from Dublin and Cork will operate as scheduled tomorrow with the exception of flights to and from Cardiff.
The airline said only customers who hold confirmed reservations for flights scheduled to operate on Tuesday should travel to the airport.
It said customers whose flights have been cancelled may change their booking free of charge on its website, or avail of a full refund via the refund-request facility online.
It said it was monitoring the situation and would provide updates on its website.
Ryanair has cancelled all flights to and from the UK, Ireland, Denmark, Finland, Norway, Sweden, Belgium, Holland, France, Germany, Poland, north Italy and the Baltic states until 1pm on Wednesday, April 21st.