Cairo airport traffic controllers were working to schedule on Thursday after a brief protest the night before forced 16 international flights to divert to other airports, airport officials said.
The officials said 27 departures were delayed as controllers, who demand better pay, delayed clearances for landings and takeoffs.
An Egypt Air official said late on Wednesday that the five-hour protest would continue to affect flight schedules for 72 hours.
Aviation Minister Lutfi Kamal went to the airport on Wednesday evening to try to negotiate an end to the protest.
An estimated 16 million people travelled through the airport in 2010.
Egypt has seen a surge in labour unrest since a popular revolt ousted president Hosni Mubarak in February, although the military, which assumed power after his overthrow, has warned that it would not tolerate crippling strikes.
The military widened a state of emergency in September to include protests that disrupt the economy, but strikes and work protests have continued.
(c) 2011 AFP
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