Factbox: Airports and airspace closed by ash cloud

(Reuters) - Large parts of Europe enforced no-fly rulings for a third day on Saturday because of a huge ash cloud from an Icelandic volcano that has caused the worst air travel chaos since the September 11 attacks.

Here is a list of countries affected as of 1942 GMT on Saturday:

BELGIUM - Airspace closed until at least 0600 GMT Sunday. Main airline, Brussels Airlines, cancels all flights until Monday.

BELARUS - Airspace closed on Saturday for flights operating between 6,000 meters and 11,000 meters. Some routes east and south open.

BRITAIN - Airspace closed until at least 0600 GMT Sunday. British Airways cancels all flights on Sunday.

DENMARK - Airspace closed until at least 0600 GMT Sunday.

ESTONIA - Airspace closed until at least 2400 GMT Saturday.

FINLAND - Airspace closed until at least 1200 GMT Sunday.

FRANCE - Paris airports will be closed until at least 0600 GMT Monday, as will Nice and Marseille and northern airports. Toulouse, Montpellier, Pau, Tarbes, Biarritz and Perpignan remain open.

GERMANY - German airspace shut until at least 0600 GMT Sunday.

IRELAND - Airspace closed until at least 1200 GMT Sunday.

ITALY - Northern airspace closed until at least 0600 GMT Monday.

LATVIA - Airspace closed Saturday.

NETHERLANDS - Airspace closed until at least 0600 GMT Sunday.

POLAND - Airspace closed since Friday, partial reopening possible on Sunday.

PORTUGAL - Airports operating for flights to and from everywhere other than northern Europe.

RUSSIA - All airports open.

SLOVAKIA - Airspace closed as of 1300 GMT on Friday.

SPAIN - Madrid airport open, but carrier Iberia cancels all its European flights except those to or from Portugal, southern Italy, Greece and Turkey. Seven airports in northern Spain were re-opened shortly 1900 GMT on Saturday after being closed at 1800 GMT.

SWEDEN - Airspace closed on Saturday.

SWITZERLAND - Airspace closed until at least 1200 GMT Sunday, except for aircraft able to fly at altitudes of 36,000 feet or higher.

UKRAINE - Kiev airport closed to flights until at least 1200 GMT Saturday. Airports in Lvov, Odessa, Donestsk, Simferopol and Dnepropetrovsk also closed for an unspecified period.

(Compiled by London World Desk)