The 2020-21 season is Port's 4th consecutive seasons in top flight after promoted back from Thai League 2 in 2017. Also, as Port won the 2019 Thai FA Cup, they are qualified to the preliminary round 2 of 2020 AFC Champions League. In this season, Port participates in 4 competitions which consisted of the Champions Cup, Thai League, FA Cup, and AFC Champions League. It was later confirmed that the match will be restarted in September 2020 and end in May 2021.