Denmark's Wozniacki made the way through finals by defeating Elise Mertens 6-3, 7-6 while Romanian Halep entered the last two with a 6-3, 4-6, 9-7 win over Angelique Kerber.
The final battle becomes more intriguing as world No. 1 ranking is also at stake.
Wozniacki would aim to regain the top spot, which she had held earlier for 67 weeks, with a victory over Halep, who currently holds the top spot.
The two finalists have earlier failed to clinch a Grand Slam title, with Halep at the French Open in 2014 and 2017 and Wozniacki at the U.S. Open in 2009 and 2014.(ANI)