From the middle of the 1970s until the early 1980s, the team was participating in a new amateur championship named "Ethniki Erasitechniki", which was the 3rd highest level of football at the time in Greece.

In 2011- 2012 season the team achieved its highest ever position finishing 3rd in their group and competing in the promotion Play-Offs without success.

This led to an increased number of teams from the 3rd division being promoted with Zakynthos being amidst them, as it was made official in July 2013.

Zakynthos made their first Beta Ethniki appearance playing in the Northern Group where they finished 9th, managing to avoid relegation with ease.

However, the club experienced financial problems and they faced the deduction of 3 points that proved to be costly in their relegation battle.