LHR-FRA-KIX-NRT-HKG-BKK-USM-BKK-SIN-AKL-PPT-BOB-PPT-LAX-ORD-LHR 15 years ago for my honeymoon. I think the whole ticket cost something like $1,500 (not including the segments to USM and BOB) and I got upgraded on NRT-HKG and FRA-KIX because it was my honeymoon.