I'm currently trying to decide whether to use the underground or the bus for tranfers to/from the airport (hotel is in Syntagma area, so I won't have to change in either case).
I'm slightly leaning towards the bus X95 as it's cheaper, over the ground, and apparently it has more frequent runs than the underground, thus making it up for being a bit slower.
Of course the big minus is that it is subject to traffic, so it may turn out A LOT slower.
On arrival day (which is a Thursday) I'd need to take it around 2:30 / 3:30 PM: should I expect a lot of traffic at that time?
Departure day is a Sunday and flight back home is at 4PM, so I was thinking to depart from Syntagma at 1:00 / 1:30 PM: a lot of traffic also on Sundays? (But probably on departure day I might take the underground in any case, in order to avoid any risks to miss the plane).