we're heading to Cairo next month and a good use of pre-purchased zeds for us will be:
Air France to CDG (around $100)
Royal Jordanian AMM ($65--half mileage half fees!)
and/or ID90 on Egyptair ATH (haven't priced them yet)
coach only and most are very strict

I'd rather have $4-500 Plan B/C tickets in my hand than NOT)
check your zed agreements first--buy each zed point to point
All are refundable within dates shown