Getting to La Paz is not an easy feat.
El Alto Airport is 25 minutes from the center of La Paz. A taxi ride to the city center should cost about 50Bs ($6.50). Most hotels will send a taxi to pick you up at the airport (when you arrive, a driver will be waiting for you with a welcome sign), but the taxi still costs about $7. Alternatively, you can take a minibus into the center of town. GoTransTur buses wait outside the airport (behind the taxis) and leave every 4 minutes daily from 6:15am to 9pm. The minibuses go past Plaza San Francisco and up Avenida 16 de Julio (La Paz's main street) to Plaza Isabel La Católica. The ride costs only 5Bs (65¢), but the buses usually fill up, and it's hard to squeeze into the tight seats if you have luggage with you.
If you're arriving by bus, the main bus terminal is located on Plaza Antofagasta at the intersection of Avenida Uruguay, a short taxi ride (about 4 min. and $1) from the heart of town. You'll easily find a taxi outside the terminal.
