Have just joined this forum and saw your query. I am going to sharm in aug and i have booked a day trip to cairo for myself and my daughter. I booked the flights on egyptair.com and they cost about 130 Euro, for both. I was put in contact with a travel company in cairo called real life egypt (reallifeegypt.com) and have booked a day trip (escorted) with them which costs 900 Egp Pounds (about 110 Euro). No money up front for the day trip but i have been advised that they are very reliable.
hope this is some help to you

