Airlines have been forced to cancel flights to and from Greece today as the country's air traffic controllers join a 24-hour general strike.
British Airways has cancelled seven flights between London Heathrow and Athens. Passengers are being given the option of cancelling with a full refund or rebooking.
BA's flights between London Gatwick and Thessalonika will operate but with lengthy delays.
Ryanair has cancelled its flights between Liverpool and Kos today and it will offer additional services tomorrow.
EasyJet has also cancelled flights between Gatwick, Manchester and Liverpool to Greece and is offering passengers refunds or a free transfer to other services. It is warning that flights overnight will be delayed.
By Linsey McNeill
Wednesday, October 5, 2011