Sunday turned out to be third time lucky for Antonsen, who has previously lost two finals in the tournament. But after six years of waiting Antonsen finally secured his triumph.
The Indonesia Open has the status of a Super 1000 tournament and is surpassed only by the season finale in the tournament hierarchy on the World Tour.
Anders Antonsen is the third Dane after Jan Ø. Jorgensen and Viktor Axelsen, who have won the tournament.
Antonsen was otherwise behind for most of the first set where Chou Tien-chen controlled the numerous duels on the bet between the two players.
Chou Tien-chen looked to have the set in the bank, when he took a 20-17 lead, but Antonsen was not beaten. He reduced to 19-20 and then also averted the third set point after a sensational duel.
It was bittersweet for the Taiwanese, who lost focus after squandering the lead and had to see a seemingly certain set win slip through his fingers.
First he misjudged Antonsen's serve and then made a further fatal error on the Dane's first set point.
Chou Tien-chen used the break between sets to gather himself and got off to a good start in the second set. He took a 6-2 lead before Antonsen started eating away at the lead.
The Dane got his first lead at 9-8, when Chou was adjudged to have made a mistake at the net. It was difficult to see, and the Taiwanese was also bitter about the verdict.
Now Antonsen was on top in an entertaining match that was still characterized by lots of duesl at the net.
Antonsen forced Chou from side to side and at 16-13, Antonsen won four successive points to secure seven match points.
Chou saved the first, but Antonsen took advantage of his second chance and fell to his knees in sheer joy.
The Indonesia Open is the Dane's ninth tournament victory on the World Tour.