The volcanic ash cloud that disrupted flights from many Scottish airports yesterday has moved west overnight and all UK airspace is now open, the National Air Traffice Service (NATS) reports.
Glasgow, Edinburgh and Prestwick airports and Western Isles routes were among those affected on Wednesday.
After a meeting of the Cabinet's Resilience Sub-Committee, Transport Minister Stewart Stevenson said:
"We welcome the return to normal operations this morning following yesterday's disruption.
"The Scottish Environment Protection Agency, Health Protection Scotland and the Food Standards Agency are continuously monitoring deposits of volcanic ash through a robust monitoring network. The Cabinet Sub-Committee was reassured that deposits of ash presented no environmental concerns.
"Last night saw further significant eruptions in Iceland though weather conditions today mean that we expect no significant problems as we move into the weekend. Clearly conditions are volatile and the Cabinet Sub-Committee will continue to meet over the coming days to ensure we are fully prepared to respond to changing circumstances."
The Scottish Air Quality Database contains the most up-to-date continuous ambient monitoring information across Scotland. All concentrations have remained low at all monitoring sites across Scotland.
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