The limited run opened at the Shubert on July 24, after previews from July 20. It then took a breather and returned on Sept. 21.
The show traces the history and forms of Argentina's best known and sexiest dance.
The extension was not unexpected. The show's last Broadway engagement began June 17, 1997, for a limited run that was supposed to end Aug. 9, but was then extended several times before launching into an open run. It closed Aug 2, 1998, after 332 performances.
Tango enjoyed a 92-week run at San Francisco's Theatre on the Square a decade ago. After that, it made its way through Europe, Japan and the United States, before settling on Broadway.
Created by Luis Bravo, Forever Tango features popular Argentine songs and forms of the tango, taking the dance from its beginnings at turn of-the-century bordellos to the steps the world recognizes today.