-You don't need a Covid Test to enter Cabo. -U.S. requires only an Antigen test for re-entry. -Covid tests are widely available at most hotels (usually for FREE) and the airport for about $25.00 - Results are returned by email in about 15 min. Please visit the website below to understand more about the testing process. https://www.diveninjaexpeditions.com/los-cabos-covid-testing-travel-updates/
A passport and you will also need to fill out a form on the following website below. Keep the confirmation of the form on your phone to show the airline agents. You do not need a negative covid test to enter Mexico, just on the way back from the US. https://www.vuelaseguro.com/login