With the eruption of a volcano in Iceland 2 days ago, all flights across the UK, Ireland and most of Northern Europe have been affected.
The ash, which can damage plane engines, has meant that by this afternoon airspace in the UK was closed and flights cancelled. Followed quickly by the Republic of Ireland, Denmark, Norway, Sweden, Finland and France.
At this current time all UK airspace will remain closed until 0600 GMT on Friday at the earliest to all but emergency flight.
Due to the significant safety threats posed to aircraft the reopening of air space will depend on future weather forecasts and wind direction.
All passengers are advised to check with their airline before arriving at the airport for the latest update, and many are advising travellers through twitter and other social media forums not to even attempt going to airports.
For more information and the latest update you can visit the BBC News page
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