Snow in parts of the UK, Europe and the US has led to flight delays for passengers using Dublin Airport.
Dublin Airport Authority is advising passengers or those collecting people from the airport to check its website for details of the delays. Some passengers have faced delays of up to two hours.
Road temperatures in many counties remain below freezing.
Motorists in counties Cavan, Clare, Cork, Donegal, Kildare, Leitrim, Longford, Meath, Monaghan, Louth and Roscommon have been warned of dangerous driving conditions. An Garda has advised people not to travel in counties affected by snow and icy unless absolutely necessary.
Met Éireann is forecasting hail, sleet and snow showers for parts of Ulster and Connacht today and this evening and said these would spread to west Munster and north Leinster.
Heavy snow across Northern Ireland means motorists are facing treacherous conditions there too.
Flights in and out of Manchester Airport were delayed for 90 minutes this morning because of heavy snow. A spokesman confirmed the runway was now clear and flights were beginning to move.
“We are still keeping an eye on the weather and the situation could change but everything’s moving now after things were held up for about 90 minutes this morning.