Mar 12 AA 701 LGA-DFW
Mar 12 AA 175 DFW-NRT +1
Mar 14 AA 176 NRT-DFW
Mar 14 AA 712 DFW-LGA
$1138 V class 15.6K
Mar 15 AA 287 JFK-SJC
Mar 15 AA 129 SJC-NRT +1
Mar 18 AA 128 NRT-SJC
Mar 18 AA 288 SJC-JFK
$931 V class 15.4K
I'd try the M fare JFK-HKG- no min. stay and a few more miles- about the same price.