Booked: Sep '08
Travel date: Dec'08-Jan'09
YOW - ORD (UA)
ORD - PEK (UA)
PEK - SIN (SQ) (TURN)
SIN - NRT (SQ)
NRT - IAD (NH)
IAD - YOW (AC)
Total tax (Y class): CAD $124
Aeroplan fees: $0 (booked online with no stopovers)
Out of 6 segments, 1 was in AC. If none was in AC, the tax might have been even lesser is it?