Borders are closed. There are few exceptions however.
These flights are currently not prohibited: flights from Bolivia, Mexico, Dominican Republic, Russia and Turkey.
Arriving passengers (including those in transit) must have medical certificate with negative COVID-19 PCR-test result. The test must be taken no more than 72 hours before arrival. Children younger than 1 year do not need such certificate.
Before disembarking in Venezuela passengers must obtain airport entry authorisation.