Airports in Europe are reopening after volcanic ash from Iceland caused more closures over the weekend.
Airports in Spain, Portugal, France, Austria and Italy were affected and transatlantic flights were forced to reroute on Saturday and Sunday.
Most are expected to open as normal today.
Eurocontrol, the European air safety body, said areas of high ash concentration had dispersed overnight over continental Europe.
It said there was still an area of ash cloud in the middle of the North Atlantic which is impacting transatlantic flights.
While most of these flights are operating, many are having to make significant reroutings to avoid the area of ash cloud coverage, resulting in delays.
In Scotland, airports in Inverness, Kirkwall, Wick, Benbecula and Stornoway were shut for a time yesterday, but later reopened.
Restrictions were also imposed on Donegal, Sligo and Knock airports in the west of the country on Sunday afternoon
The National Air Travel Service (Nats) said there would be no restrictions over UK airspace today.