Originally Posted by christep
Er, oops - I just realised that if you route in from the US via LHR then you are at 5 segments in Europe, which would require an additional fee. Routing LAX-ORD/DFW-FRA would avoid that extra amount (but would reduce the remaining number of segments available in North America by one).
The segment limits within the base fare are 4 within Europe and Asia, 6 within North America. Extra segments may be purchased, but the total number of segments including the intercontinental ones cannot exceed 20.
$1200 HKD for the back tracked sector.
So tempting to fly to FLL and Canada

(if they pay for me) ... or is it possible.