Originally Posted by
patalan
If I am not mistaken SCL is considered Southern South America, therefore not eligible for an EUA. According to upgrade reward charts you should be able to upgrade using miles on CO flights and select COPA flights. So far doing various searches none of the COPA operated flights have been upgradeable. (iah-scl, lax-scl & diff dates). SO I am not really sure which ones are actually eligible.
Destination isn't what controls the EUA-ability of a flight; marketed service class is. For BusinessFirst-marketed flights no EUAs are available. Copa operates International Business so all their flights are eligible. A lack of upgradable flights on co.com may just be a limitation of the search engine of inventory, but all Copa-operated flights are EUA-able for elites.