Buenos Aires city government has confirmed plans to construct the long-awaited Metro Line F, with tenders for the first 5 km phase set for June 2025.

The 5 km first section is to serve six stations, linking Brandsen in the south with Tucumán in the centre, where interchange would be provided to lines B and D. The estimated cost of this section is US$ 1.1 billion, which includes the procurement of 14 trainsets. A 4 km second phase with five stations is planned to extend the line to Plaza Italia in the northwest of the city centre. The first section of Line F is planned to carry 307,000 passengers a day, growing to 600,000 passengers a day when the extension to Plaza Italia is completed. 

The decision to build Line F was made as long ago as 2001. It aims to relieve overcrowding on Line C. Construction on the first section is expected to start in 2026, tenders for rolling stock procurement are expected to be called by June 2027 and the inauguration of the line is planned for 2031.