Is this a valid itinerary? JFK-LAX (stop) LAX-HKG HKG-SIN SIN SYD? US Airways says no because they got confused between my destination and my stopover and then when I argued that, they said something about regions or zone. The only thing I can think of is that it traverses/stops in another region (South Asia) on the way back from HKG, but I recall people have booked flights PER-KUL-NRT-JFK before which also traverses regions.