I will be traveling from the U.S. to Spain for a 13-month period as a student. I need to get a roundtrip airline ticket. It seems that airllines sell only tickets that are good for 12 months. I have heard suggestions that I purchase a roundtrip now with an early return, and throw the return away, and do that a second time 8 months from now. That's an expensive option. Even more expensive is purchasing 2 one-way tickets. Does anyone have other ideas?