Saw the EY ORD-AUH flight routing south of London. That's rather a long way from a Great Circle track - wonder how much longer it's going to take them?
This is an absolute normal routing which utilities the track system that is favorable eastbound, however, the EY151 AUH-ORD (14:43), westbound flight today, is routing south of London today on a random track due to the volcanic ash.
AUH-ORD today Ground distance 6829nm
Air Distance 6861nm (due little headwind average throughout flight being -1 kt)
Great Circle track 6315nm