Flames, fireworks and a guard of honour from visitors Institute set the scene for a joyful evening ahead of Niall Currie’s side lifting the trophy after their final game of the season.
The team had already secured glory by drawing with Dundela the previous weekend with enough to seal immediate promotion back to the top-flight.
Check out these great photos from Friday evening, starting with the family fun event before the match.
17. Celebration time
Having a great time at the football darts game at the Portadown Football Club Family Fun Night are from left, GavinMcConville, Presley McConville (12), Marley McConville (9), Alfie Houston (11) and Jayden Wright (12). PT17-224. Photo: Tony Hendron
18. Celebration time
Institute give Portadown a guard of honour at Shamrock Park after they win the league and are promoted to the premiership. Photo: Jonathan Porter/Press Eye
19. Celebration time
A night to remember for Portadown manager Niall Currie. Photo: Jonathan Porter/Press Eye
20. Celebration time
Portadown fans pictured at the start of the match. Photo: Jonathan Porter/Press Eye