big difference in award taxes between out bound and return flights
I recently ticketed J award flights with AA points for the following:
MCI-PHL AA
PHL-MIA AA
MIA-SCL LAN
taxes: $5.60
return
EZE-SCL LAN
SCL-MIA LAN
MIA-DFW AA
DFW-MCI AA
taxes: $91.06 each
Can anyone explain why the taxes the return trip are 16 times more than on the outbound? I'm ecstatic that I was able to get these award seats but puzzled as to the huge disparity in taxes.