Erakovic coasted past Stefanie Voegele 6-2, 6-4 to create a championship match against No. 3 seed Sabine Lisicki.
Lisicki outlasted Magdalena Rybarikova in the other semifinal 7-5, 7-5.
Erakovic has appeared in two previous WTA finals, one of them coming in this tournament a year ago. She lost on that occasion to Sofia Arvidsson.
Lisicki has won two of her three previous meetings with Erakovic, one of the wins being a three-set decision in Thailand three weeks ago. Lisicki has three WTA championships to her credit.