Can I use my return ticket if I didn’t use the outbound ticket?
The flights or legs that make up the itinerary of your ticket must be flown in consecutive order. If not, the itinerary is canceled entirely.
Nevertheless, exceptions may be made in Brazil, Colombia, Germany or Italy under certain conditions. Some exceptions may also be made in Peru, Argentina, Chile and Ecuador, but only for 100% domestic legs.
Other countries are subject to the ticket’s fare conditions.