for the trip from israel to the u.s. this summer, i flew through cairo, egypt. the flight from tel aviv to cairo was on air sinai, an airline which officially does not exist! there is no website, only rumors. it operates one flight a day each direction on the route, using a white, unmarked aircraft. there are no boarding announcements, and the flights do not even appear on the departure and arrival boards in the cairo airport. the reason for all this secrecy is that the egyptians do not want to be known to be operating flights to israel, but thanks to the israeli-egyptian peace treaty, each country is required to operate a certain number of flights to the other. air sinai would appear to be operated by egyptair but officially no one knows. cool right? it is impossible to book the flights directly online – the only options are to go to a nondescript office in tel aviv and pay with cash, or book through a sketchy greek third-party travel website, which is how i did it.