PAOK won their third championship and their first one in 34 years, by beating Levadiakos on the penultimate round of the league.
Also, on July 30 and before the start of the season, the EPO removed article 30 that referred to multi-ownership cases, an act which, as it turned out, was intended to cover the acquisition of Xanthi by PAOK.
The fourth spot was a cause of controversy between the Super League and Greek Football Federation (EPO), however, the sporting court decided in favour of the play-off match in order to not completely diminish the chance for the second division runner-up to be promoted, as they would normally be promoted automatically in a normal season.
The second and final club to be promoted was Aris, after beating 2–0 Karaiskakis on 29 April 2018.
OFI won 3–2 on aggregate and retained their spot in 2019–20 Super League.