Originally Posted by
JVPhoto
I feel the OP may be trying to stay on UA to ensure PQMs and other things like that. IAH-MAN-SIN-DPS-SYD r/t is 30,800 miles. IAH-SFO-SIN-DPS-SYD-IAH is 22,500.
It won't work that way. IAH-MAN-SIN is a through flight. Barring a stopover in MAN -- which would likely increase the cost of the ticket significantly -- you'd get credited for the IAH-SIN nonstop distance.