When travelling on such short distances, you can take into account also busses and carpooling options: with some luck you will find very cheap options, even if you book on short notice.
In which stations can you take the train to Athens and where will you arrive?
You can take the train to Athens at Pallini, which arrives at Athens or Kifissos.
How long will it take you from Pallini to Athens by train and when do the trains leave?
The average duration of the journey is 2 hours and 20 minutes, but the fastest connections take you to Athens in 30 minutes. The first train leaves from Pallini at 07:09, while the last one leaves at 18:09.