Finding it: Athens Terminal B. 2.4km from Kifissos — different operators use different terminals, they are not interchangeable.
Worth knowing before you rely on this: A third-party listing gave a conflicting address ('Liosion 216') and reused KTEL Kifisou's phone number for this terminal — discarded as unreliable. This station has no single building-wide phone line; each KTEL company keeps its own desk, listed above.
Athens airport is about 21 km east-south-east. The X93 express bus runs between the airport and Kifissos Terminal A and calls at the stop outside this terminal on the way, so there is no change. Watch for the stop named ΣΤ. ΥΠΕΡ/ΚΩΝ ΛΙΟΣΙΩΝ: Terminal B is a stop along the route, not the end of it.
From the town centre
The terminal is north-west of the centre on Liosion street. The nearest metro is Line 1, with Kato Patisia about ten minutes' walk away and Agios Nikolaos about fourteen; Attiki, where Lines 1 and 2 meet, is quoted at ten to fifteen minutes. Many bus and trolley routes call at the ΣΤ. ΥΠΕΡ/ΚΩΝ ΛΙΟΣΙΩΝ stop directly outside, among them 420, 711, 719, 720, A10, A11, B10, B11, B12 and Γ12. There is a taxi rank at the station.
From Kifissos (Terminal A)
Kifissos Terminal A is about 2.5 km west-south-west. No urban line is published linking the two terminals, so the transfer is normally made by taxi.