I noticed that Delta has very good quick turn fares to SCL on the Mon-Tues before Thanksgiving, maybe available on a few other dates around that time. Fare is $400 RT from MCO, About $600 to $700 from Northeast Hubs. MQM will be around 11,000 to 13,000 MQM depending on departure point and routing. Delta flights outbound, LATAM on the return.