Scary stuff isn't it, Justin?
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Following advice from the Met Office, the National Air Traffic Service (NATS) has introduced restrictions to UK airspace.
You are advised to check with your airline for detailed information.
Ryanair has suspended all flights to and from UK. It said cancellations and delays could also be expected tomorrow. Visit their website for the latest information.
All British Airways domestic flights for Thursday have been cancelled.
All London airports are closing at 11:30.
England
Birmingham Airport - Departure flights currently cancelled. Arrivals also affected. Flight information.
Blackpool International Airport - outbound flights suspended. Flight information.
Bournemouth Airport - One Ryanair flight to Dublin had been cancelled as the Irish airport has been affected. Flight information.
Bristol Airport - around 20 flights reported to be affected by the problem. Flight information.
Durham Tees Valley Airport - all flights suspended.
East Midlands airport - at least 20 cancellations reported. Flight information.
Exeter Airport - Eight flights cancelled up to 15:30, but afternoon flights are being reviewed.
Leeds Bradford Airport - Most flights cancelled until at least 13:00. Flight information.
Liverpool John Lennon Airport - All flights suspended until at least 13:00. Flight information.
London - All airports to close from 11.30am.
London City Airport - Cancellation of all Thursday's British Airways domestic flights is affecting departures. Flight information.
London Gatwick Airport -138 flights cancelled, mostly easyJet and Monarch airlines. The airport remains open. Flight information.
London Heathrow Airport - 150 flights cancelled. Flight information.
London Stansted Airport - Five easyJet flights due to depart this morning were cancelled. no further information yet. Flight information.
Luton Airport - some airlines have chosen to cancel a number of flights. Flight information.
Manchester Airport - No flights 0700-1300 but the airport will stay open and passengers are advised to arrive as normal. Flight information.
Newcastle Airport - Passengers can still check in if advised to do so by their airline but arrivals are cancelled until further notice. Departures cancelled or subject to indefinite delay. Flight information.
Norwich Airport - All flights cancelled until 14:00. Flight information.
Robin Hood Airport - All flights suspended until at least 13:00. Flight information.
Southampton Airport - All northbound flights grounded. Flights into the airport from Paris, Belfast, Newcastle, Manchester, Glasgow, Durham via Leeds and Edinburgh have been cancelled. Flight information.
Problems have been reported at Leeds Bradford. Northbound flights from Newquay airport also disrupted.
Ireland
Dublin Airport - flights disrupted. Flight information.
Northern Ireland
Belfast International Airport - closed. Flight information.
Derry Airport - Disruption. Flight information.
George Best Belfast City Airport - closed. Flight information.
Scotland
Passengers are instructed NOT to travel to Scottish airports. All arriving and departing flights are currently suspended.
Aberdeen, Edinburgh, Glasgow and all 10 Highlands and Islands airports are closed until further notice.
Highlands and Islands Airports said there were no flights in and out of any of
its airports because of the ash.
Wales
Cardiff Airport - disruptions to all flights. Passengers advised to contact tour operator before travelling to the airport. Flight information.