I have ORD-VIE-BKK booked right now. I'm actually starting in RDU, and today I see RDU-IAD-VIE opened up on my date.
Is it possible to call and change just the ORD-VIE to RDU-IAD-VIE without affecting the VIE-BKK?
Asking before I wait 3 hours on hold just to be told no...