The 18-year-old Olympian carded an even par 72 on the final day at the DLF Golf and Country Club. On a day that saw leads shift hands on multiple occasions, Aditi held her nerve to get the better of American Brittany Lincicome and Spain's Belen Mozo.
Brittany and Belen finished tied second with identical totals of two-under 214 after 54 holes, one adrift of the winner.
Aditi finished with a total score three-under 213 to win a prize purse of USD 60,000, propelling her to the top spot in the Rookie of the Year rankings.
Aditi has had a good year on the Ladies European Tour (LET) but could not win a title.
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"It feels good to win the championship, I was playing good all year, I had four top 10 finishes. I had a good front nine but made a few mistakes on the back nine, but overall it was a good week," Aditi said.
Aditi had a two shot lead coming into the final round. She played an even-par front-nine and looked well on course to claim her maiden title on the Ladies European Tour.
Brittany, who has two major titles to her credit, too had a good day and finished with a total of two-under 214 to give herself a realistic chance of winning the title.
With just two holes to play, both Aditi and Belen bogeyed the 17th hole to tie with Brittany for the top spot.
On the decisive 18th hole, Aditi hit an incredible approach shot which landed and rolled back to stop one and a half feet from the pin.
"As far as the Rookie of the Year goes, I still have a couple of weeks of golf tournaments coming up, I shall be playing in Qatar and Dubai. So I am hoping to put up a good show there to have the Rookie of the Year award too under my belt," she said.
Thai player Kanphanitnan Muangkhumsakul took the fourth spot with a total score of 215, followed by English golfer Florentyna Parker at 216 to complete the top five positions.
Local professional Vani Kapoor had an off day in the park and carded 6 over 78 to settle for tied 28th position. Diksha Dagar finished as the best amateur in the tournament with a total score of 229.
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