I used to read the Jerusalem Post every day. One day, the news was Syria had been bombed where a nuclear plant was being built. There was not one word about this possibility before it happened.
Based on what I know, I believe Israel will use the military airport in Greece. Netanyahu went there, think it was last year, plus I think I remember Israel had war games with Greece. Greece needs money really badly and “renting” that military base to Israel would bring in money.
Our military flew out of Greece when we attacked Afghanistan.
Greece is in the opposite direction from Iran, so that would make the flight even longer, and would still require them to fly over either Turkey, Saudi Arabia or Jordan and Iraq - I don't see the benefit to your idea.