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Depending on your Passport...

If you are a US Citizen you need a visa which seems it can be obtained at the AirportOn February 2, 2021, the Bolivian government issued Supreme Decree 4460, which reinstates tourist visa requirements for U.S. citizens visiting Bolivia. Beginning February 8, 2021, all U.S. citizens visiting Bolivia will be required to obtain a tourist visa. A tourist visa for Bolivia can be obtained for purchase at any land or air border. In addition, a tourist visa can also be obtained at a Bolivian consulate in the United States or neighboring country.

Entry Requirements:

• A Bolivian visitor visa costs $160 US and can be paid in U.S. or local currency upon arrival. Visitors should be prepared to provide crisp, untampered bills. Bills with small tears or any other damage may not be accepted.
• Visitors must show proof of a round-trip ticket, or confirmation of plans to depart Bolivia. U.S. citizens flying into Bolivia but departing by land have faced complications. Visitors must also show proof of lodging in Bolivia, such as a hotel reservation. If staying with Bolivian friends or family, authorities may require a letter of invitation from the host.

So it can get complicated with a one-way as a throwaway if on a US passport.

Now as a Canadian (listed location on your profile), Tourist visa: not required for stays up to 30 days