Seven airlines canceled flights to Cairo on Monday out of fear that violence will take place during celebrations for the anniversary of the 25 January revolution, Cairo airport sources said.
The number of passengers on most airplanes declined, the sources said.
Airport authorities tightened security measures at the arrival and departure halls and imposed procedures to check people waiting for passengers to arrive.
Authorities also set up checkpoints on roads leading to airport buildings.
Egyptian authorities worry rioting could take place on the anniversary of the beginning of the revolution on Wednesday.
Political groups such as the April 6 Youth Movement previously announced that they will protest in Tahrir Square against the ruling military council.
Other groups, such as the Muslim Brotherhood and the Salafis, announced they will go to the square for celebration, not protest.
Translated from Al-Masry Al-Youm
