LA 601 is not a new flight - but the times have been tinkered with everything because of the runway closures. (It is LAX/LIM/SCL) I will actually be on it LIM/SCL.
You also have an option of
LA1441 UIO GYE 2100 2155
LA1447 GYE SCL 2225 0550
Looks like 1441/1447 are almost full - only full Y is available.