The auditions for season 3 started in March 2008, as in auditions for the previous seasons. There was a form to fill in the Latin American Idol official site to try for auditions for 2008.
Auditions dates and cities for season 3 were:
- March 29, 2008 – Buenos Aires, Argentina
- April 11, 2008 – Bogotá, Colombia
- April 19, 2008 – Caracas, Venezuela
- April 26, 2008 – Mexico City, México
- May 3, 2008 – Panama City, Panama
Season 3 premiered on Thursday, June 19, 2008 at 9 pm in Sony Entertainment Television, with the auditions from Mexico. As American Idol and Canadian Idol, it also start using the new intro sequence. Episodes from Venezuela's and Argentina's auditions were broadcast on June 25 and June 26 respectively. Episodes from Colombia's and Panamá's auditions were broadcast on July 2 and July 3 respectively. Theatre Stage episodes were aired on July 9 and July 10, with the Top 30 being announced at the end of July 10 episode. Semifinals Episodes started on July 16. Finals Episodes started on August 13.