..it takes about 4 hours by road to Luxor. You can get flights with Egyptair to Cairo for about £40 return and it only takes an hour ( by road about 7 I think ). If you go I have an email address for a cheap reliable guide in Cairo who comes with driver and air con vehicle and also driver in Luxor that will take you around all the sights in Luxor all day for just £15 and thats per car not person. If you book flights do it online in the UK with Egyptair and make sure you pick the cpuntry as Egypt in drop down box in right hand corner and not UK as you will get cheaper prices. The weather should be about 70 - 75 and you should get a good tan.
There are also organised bus trips to Cairo and Luxor as well as by plane but you will pay alot more.