The Californian defeated Hawaiian Malia Manuel 13.17 to 11.56 in the final - the first time either woman had advanced that far on the senior tour.
In clean but challenging two-to-three foot waves, Conlogue triumphed to win the biggest purse on the ASP Women’s World Championship Tour - a cool $30,000.
“I’m speechless right now,” Conlogue said. “It’s been two years on the ASP Women’s World Championship Tour where I kept losing in the quarterfinals.
"Then today after winning my quarter-final I just tried to go and win the thing. Malia (Manuel) was surfing great in the final, even though the waves were tricky.
"I’m really stoked to have won this event. I love Steph (Gilmore) and Sally (Fitzgibbons) and to have them chair me up the beach was absolutely amazing."
World rankings leader Stephanie Gilmore fell in the quarters, as did her closest title rival Sally Fitzgibbons.
In total, five Australians had reached the quarter-finals but all were eliminated before the final.
1: Courtney Conlogue (USA) 13.17
2: Malia Manuel (HAW) 11.56
SF 1: Malia Manuel (HAW) 12.67 def. Tyler Wright (AUS) 10.50
SF 2: Courtney Conlogue (USA) 14.33 def. Rebecca Woods (AUS) 10.10
QF 1: Tyler Wright (AUS) 14.43 def. Laura Enever (AUS) 12.50
QF 2: Malia Manuel (HAW) 13.00 def. Stephanie Gilmore (AUS) 11.47
QF 3: Rebecca Woods (AUS) 11.73 def. Coco Ho (HAW) 8.73
QF 4: Courtney Conlogue (USA) 14.97 def. Sally Fitzgibbons (AUS) 13.34