Air passengers are being warned to check their flights after a day of disruption caused by thick fog in the UK.
Airports across England, Scotland, Wales and Ireland are affected - with 10% of flights at Heathrow cancelled.
Anyone intending to travel is advised to check with your airline.
Dublin Airport just tweeted this warning too 'Heavy fog @DublinAirport & in UK is impacting flight schedule, passengers advised to check with their airline before coming to the airport'
