Visas ARE required for all U.S. citizens who wish to visit Paraguay, for any purpose. Visas upon arrival are available for those U.S. Citizens entering Paraguay through the International Airport “Silvio Pettirossi” only. Paraguayan authorities have the right to deny entry to U.S. citizens who arrive in Paraguay without a visa, and they do! The Embassy can not help you enter the country if you arrive without a visa!
For information on United States customs rules and procedures, please refer to the US Customs and Border Protection Web Site.
For information on Paraguayan customs rules and procedures, please consult with the Paraguayan Embassy or Consulate.
Entry and exit to and from Paraguay for US citizens are regulated by Paraguayan law. The Consular Information Sheet for Paraguay explains the regulations in detail.