Have experienced small airports, none compare to this one. We arrived at the airport almost 3 hours prior to our scheduled flight time with Thomas Cook. There were already two very long queues outside for our flight and a Thomson flight. We were coralled round an area outside which was only partly shaded from the scorching sun so a very uncomfortable wait. Queue finally started to move after around 40 mins but took another 30 mins just to get to the airport door. Check in was painfully slow even though there were at least five check in desks operating. Once checked in we joined another queue to pass the cases through the x-ray machine, this took around another 15 mins. The worst was yet to come when we then had to join yet another queue for security. This snaked outside the airport and was about five to six people deep in places! We shuffled along in this queue for almost an hour, two security staff operating one belt and scanner, where totally unconcerned about any alarms that were being activated as passengers struggled through. Beyond this was passport control and boarding gates which we couldn't get near because of the sheer volume of people. After standing for another 30 mins jammed in like sardines we became aware if another female passenger shouting that passengers for the Thomas Cook flight needed to board immediately! At no point were there any announcements from airport staff, in fact we couldn't see any staff anywhere! We had to push our way through the football crowd to get to the boarding gates, never even saw passport control! The airport is woefully inadequate to deal with the amount of passengers departing and dangerously understaffed, security is non-existent. As a final insult we were then delayed an hour after boarding as the ground staff had made a mistake in counting the cases being loaded on to the plane! Santorini is an amazing island and this was such a sad and dissapointing way to leave it! Passenger safety at tis airport needs to be addressed as a matter of urgency.