This is the Cortina di Ampezzo cable car map I got when I visited the Dolomites in late September to early October.
I know that all cable cars are in operation in the summer, but at the time I went, only Tofana, Floria, and Lagazui were in operation.
(circled in the second picture)Topana and Floria stations are located in the city, and Lagajui has to be reached on the outskirts.
For accurate cable car operation information, please refer to the Cable Car Pass website.