Google Flights is showing wide-open availability for Cairo-Singapore (as well as Hong Kong) in business-class on Air France and KLM for about $1,930 ($1,954 into Hong Kong) for the next couple of months.
You fly Cairo-Paris-Amsterdam-Singapore-Amsterdam-Paris-Cairo. Here's one of many sample dates:
https://goo.gl/flights/r5Kt
To position into Cairo, I'm seeing economy-class on Sky Team for about $800, also on Google Flights, from the usual North America airports -- New York, Washington, Toronto, Chicago, etc.
So, for $2,700 and change this could be a fun mileage/status run. Cairo has pretty good prices to elsewhere, so perhaps you could make multiple mileage/status runs over a 7-10 period.