Re: PIA or other flights
Neera...
I'm not sure where you are located...but what about British Airways? I think I'm going to try that route next time I go to pakistan. They may have a direct route from London and you can just schedule the flight from your home town to London with a 3 hour gap. I don't have kids...but I know from experience being at Heathrow that the guys with the carts are really helpful when you have kids or are pregnant by dropping you off at your gate.
Otherwise, if you can bear not eating anything for 14 hours or however long the PIA takes and the stink...I'd say it is easiest route.