The situation in Europe as reported by the Swedish news channel TV4 at 08:54BST.
Austria: Airspace open.
Belarus: Airspace between 6000 and 11000m closed, some routes in the south open.
Belgium: Airspace closed until 1900BST Monday, empty aircraft may fly into the country.
Bosnia: Parts of airspace closed.
Bulgaria: Two airports open, flights over the country permitted at 8000m or higher.
Croatia: Most airports open again.
Czeck Republic: Airspace closed until 1100BST Monday.
Denmark: Airspace closed until 1300BST Monday.
Estonia: Airspace closed until 1300BST Monday.
Finland: At least two airports opened temporarily on Monday, otherwise airspace is closed.
France: Airports in the north closed until Tuesday, some are open in the south.
Germany: Airspace closed until 1900BST Monday.
Hungary: Airspace mainly closed until 1100BST Monday, some flights permitted.
Ireland: Airspace closed until 1300BST Monday. No Ryanair flights in northern Europe before Wednesday afternoon.
Italy: Airspace open.
Latvia: Airspace closed but flights over the country permitted at 6000m or higher.
Lithuania: Airspace open.
Montenegro: Airspace open.
Netherlands: Airspace closed until 1300BST Monday.
Norway: Airspace open, apart from Öst-Finnmarka in the north.
Poland: Airports shut, flights over the country permitted.
Romania: Two airports will open during Monday, flights over the country permitted.
Russia: Airports are open. Flights to the USA via the north pole.
Serbia: Airspace open.
Slovakia: Airspace closed.
Slovenia: Airspace to be opened temporarily for Monday morning.
Spain: All airports open.
Sweden: Airspace open in the north, Stockholm-Arlanda, Stockholm-Bromma och Gothenbourg-Landvetter will open during Monday morning. Over the Baltic, and the Swedish counties of Småland, Södermanland and Västergötland flights permitted at high altitude.
Switzerland: All flights to and from the country stopped until 1300BST on Monday. Flights permitted at more than 11000m.
Turkey: All airports open.
UK: Airspace closed until 0100BST Tuesday (info from NATS).
Ukraine: Kiev airport was open on Sunday.
and
Iceland: Airspace open!!!