Pornpawee Chochuwong booked her berth in the women's singles final of the US$360,000 Korea Open Championships in Suncheon on Saturday.
The Thai sixth seed battled past Kim Ga-Eun of South Korea 17-21, 21-14, 21-14 in the semi-finals of the World Tour Super 500 event.
It was another come-from-behind victory for Pornpawee, who also fought back to upset fourth-seeded compatriot Ratchanok Intanon in the quarter-finals on Friday.
The 24-year-old, who was forced to miss last month's All England Open because of Covid-19, will play Pusarla V Sindhu in the final after the Indian third seed eliminated second seed An Se-Young of South Korea 21-14, 21-17.
Women's doubles stars Benyapa Aimsaard and Nuntakarn Aimsaard will also vie for the title today.
The eighth seeded pair cruised past Eom Hye-Won and Kim Bo-Ryeong of South Korea 21-17, 21-8 in 36 minutes.
They will take on another Korean combination, the seventh seeds Jeong Na-Eun and Kim Hye-Jeong, who defeated compatriots Chang Ye-Na and Jung Kyung-Eun 23-21, 21-12.
Jonatan Christie, who defeated Kunlavut Vitidsarn in the quarter-finals, advanced to the men's singles title match with a two-game win over Srikanth Kidambi.
The Indonesian third seed downed the Indian 21-19, 21-16 and will meet China's Weng Hongyang, who defeated Victor Svendsen of Denmark 22-20, 21-13.
Fajar Alfian and Muhammad Ardianto will play Korean duo Kang Min-Hyuk and Seo Seung-Jae in the men's doubles decider while the mixed doubles final will be a clash between Malaysia's Tan Kian Meng and Lai Pei Jing and South Korea's Ko Sung-Hyun and Eom Hye-Won.