About 4 years ago, I booked Lan from LAX to Argentina using BA points and booked directly thru the BA website.

I've been trying a few random dates in 2015 to SCL but keep getting a message that there is a problem with the booking! and no sign of any LAN flights. Have things changed?

I don't have enough points to book right now but I'm trying to decide whether to keep collecting BA points and transferring Avion points to BA or whether I should do something else.

I live in YVR but am happy to get myself to SFO or LAX as I did last time for a business class flight on LAN or?

Do you experts have any advice for me?