Morten will be performing at Gran Rex in Buenos Aires, Argentina on September 28. There will be a ticket pre-sale on July 10, and the public ticket sale starts on July 17. For more information, see Ticketek.com.ar.
Update
Morten will be in Santiago, Chile on September 30 at Cauplican. There is a ticket presale on July 13 and the general sale will be on July 14. For more information, see Ticketek.cl.