
The title in Canada is Ariya's fifth LPGA Tour victory of her career, after winning her first back in May. It was a big recovery for the Thai who was forced to retire during the third round at the Olympics due to knee injury.
The 20-year-old finished the event at the Priddis Greens Golf and Country Club at a superb 23 under with another dominant display in the final round.
"I felt like I wanted to have fun and be happy on the course," Jutanugarn said. "No matter what's going to happen, I can handle it. ... I feel really happy with myself right now."
With a two-stroke lead over Chun In-gee going into the day, Ariya extended her lead with seven birdies and just one bogey for a six-under-par 66 to claim the victory.
Chun, meanwhile, was only good for a 69 as she slipped back a place into third, pipped into the runner-up position by fellow South Korean Kim Sei-young (65).
Local favourite Alena Sharp (67) was fourth overall, while a brilliant final round from Karrie Webb (64) saw her claim equal fifth alongside Anna Nordqvist (68).
World number one and three-time champion in Calgary, Lydia Ko (69), was 10 strokes behind the winner in a tie for seventh alongside Alison Lee (68) and Chella Choi (70).
Japan's Ayako Uehara (67) created some history by becoming just the fourth player in LPGA history to have two aces in one tournament with her hole-in-one on the 164-yard eighth, adding to her effort on the 158-yard 11th from Saturday.
Meanwhile, another local in world number three Brooke Henderson was only good for equal 14th, 12 strokes off the Thai winner. For more story on Ariya click here http://www.nationmultimedia.com/sports/Par-for-the-course-30286860.html