Kammala jumla mai zuwa: Aros ya fara bugawa Chile wasa a ranar 29 ga Afrilu, 1998 da Lithuania. Ya kasance ɗan takara a gasar cin kofin duniya ta FIFA ta 1998 tare da Chile. Ya buga wasa daya ne kawai a gasar cin kofin duniya ta '98, wanda ya kasance a wasan zagaye na 16 da Brazil. Aros ya halarci Copa América's uku (1999, 2001, da kuma
2004). A gasar Copa América ta 1999, Chile ta kai wasan kusa da na karshe da Uruguay. Wasan ya tafi hukuncin kisa kuma Aros ya rasa hukuncin kisa na biyu, wanda zai tabbatar da hukuncin hukunci ga Chile. Chile ta ci gaba da rasa wasan na uku da Mexico. Wasansa na karshe na kasa da kasa shi ne da Costa Rica a ranar 14 ga Yuli, 2004 a wasan rukuni na 2004 Copa América. Aros ya kammala aikinsa na kasa da kasa tare da 30 caps.