Apologies. Long day, but no excuse.
If you haven’t already, I’d check where the ticket was issued.
If you’re not sure, and can’t see from VS website etc. then the best best is to type in ‘Saudia manage booking’ to Google enter your e-ticket there on the Saudia website, making sure to change the first 3 letters to 932.. followed by the rest of your e-ticket number. And surname.
That should help to show where the ticket was issued. I’ve had one-way tickets beginning Asia and Europe being issued from the US… but you never know.