Originally Posted by
paulwuk
APD on LHR-SIN is £194 in WTP, or £170 to the west coast U.S. Add in the the heathrow passenger service fee and you're over £200.
However a one-way fare on BA long haul is far more than a discounted return.
It doesn't seem like the sort of trip an indecisive teenage son and his friend would be taking courtesy of their dad though!