I booked the flights myself when the tickets were issued to me in Riyadh & before leaving Saudi Arabia for good. I was going to travel from London (my retirement base), but I did not travel on the specified dates. The E-tickets in hand are NOt invalid & would only expire in December (next month), as confirmed by the London Office of Saudia in July. However, like I mentioned before, the tickets' records "disappeared" & were no longer showing on line Saudia computers in London! As a result, they could do nothing & advised me to contact Saudia HQ in Jeddah for re-issuing my un-used tickets. I followed their advice & presented all the relevant documents supporting my case by email to their Public Relation at HQ but I received no explanation whatsoever (except for their automatic electronic acknowledgement messages) during the last 3 months of repeated emails from my side!!!