By taxi
From La Paz it takes 1-1.5 hours and costs between Bs. 200 and 240, depending on your bargaining skills. The drivers will wait up to three hours while you take in the views from the top.
From El Alto it takes one hour and costs Bs. 100 after bargaining. Green Micros run from central La Paz to Plaza Ballivian in El Alto for Bs. 1.
By Guide
Many tour companies based in La Paz will drive a group in a private 4WD vehicle up the mountain. Prices are low and negotiable beforehand.
By bus
In summer rainy season, ski season, there might be a bus on weekends when/if the ski lift operate. In winter only, there are combined tours of Chacaltaya and Valle de la Luna runs. It gives you 40 minutes on the mountain and cost Bs. 50 to 75. It is not enough time to get used to the altitude, however. Check if admissions and snacks are included in the price.