The walkout is part of a general strike across the country which will also hit ferry services.
Public transport across Greece, particularly in Athens, will be severely disrupted throughout the day, according to the Foreign and Commonwealth Office.
Air passengers are being advised by the FCO to contact their airline or travel company for more information.
The industrial action by air traffic controllers will affect all airports across the country and all airlines flying to and from Greece, the FCO warned.
Sourced from Travel Weekly