In addition some good fares just coming up in reverse direction (from SCL)
SCL-MIA $1255
SCL-LAX $1275
SCL-IAD $1367
From Flight Network, others will be a little more
https://www.flightnetwork.com/en/sea...22USD%22%7D%7D
Normally the cheapest destinations out of SCL are GUA and CUN at around $1600 USD.