Many UK airports are closed until at least 0100 BST on Monday because of volcanic ash from Iceland, with more disruption likely over coming days.
Manchester, Liverpool, East Midlands, Birmingham, Teesside, Norwich and Doncaster airports are among those closed in England.
Airports in Northern Ireland, Prestwick near Glasgow, some Scottish islands and the Isle of Man are also affected.
London airports are open. Travellers are urged to check with their airline.
The air traffic authority Nats said the Civil Aviation Authority had been forced to extend a no-fly zone imposed earlier on Sunday after the ash cloud had spread further south.
In England, other airports inside the no-fly zone include Humberside, Leeds Bradford, Blackpool, Sheffield, Doncaster and Carlisle.
This ash cloud must be very frustrating for the passengers. I heard about a couple who were going to get wed in Barbados but had to cancel because of this cloud- and it was the second time they'd done so, as they'd previously booked it during the last ash cloud disruption. I pray it'll go soon.
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