Shannon Airport is expected to reopen in the coming hours as soon as intense fog clears.
A number of flights have already been cancelled and diverted from the MidWest base due to adverse weather conditions.
Unexpected heavy fog during a period of essential taxiway maintenance work led to the closure of the MidWest Aiport at 11.00pm last night.
In the intervening period a number of inbound flights due to land at Shannon were diverted to Dublin including routes from London-Stansted , Fuerteventura, Edinburgh Liverpool, Malta, Oporto, and US services to New York JFK and Boston.
Three flights due to depart from Shannon last night were cancelled, namely routes going to London Stansted, Edinburgh and Liverpool.
Passengers meanwhile due to depart on Shannon’s early morning London Heathrow flight were bussed to Dublin.
A number of other departures have been delayed but are expected to depart later.
The Airport is advising passengers to check with their airline for the most up to date flight information.
Currently the inbound Ryanair Service from London Gatwick originally to land in Shannon for 2:35pm, is now not expected to arrive until 11pm tonight, while the outbound flight from Shannon to Gatwick has been delayed until 10.30pm.
While the outbound United Airlines, Newark New York route originally due to depart Shannon at 12noon, is now estimated to take off after 2pm.
A spokesperson for the Shannon Airport Group has told Clare FM that the airport will reopen as soon as the fog clears.