Cairo airport resumed landings after earlier suspending incoming flights due to a dust storm, but Alexandria's airport was still only allowing departing flights, Egypt's state aviation firm said on Tuesday.

State media also reported six ports had closed due to the dust storm, citing high wind speeds and strong waves.

Egypt's two main airports suspended landings and redirected flights when a dust storm severely reduced visibility, forcing two planes to make emergency landings in Cairo.

The suspension at Cairo Airport was lifted after 70 minutes because weather conditions improved, the National Air Navigation Services Company said in a statement.

Borg al-Arab Airport in Alexandria was still closed to incoming flights, the statement said.

Egypt's other airports were not affected by the storm.

The closed ports are Zeiteyat, which specialises in petroleum products, Adabeya, Tawfiq, Ain Sokhna and Nuweiba on the Red Sea, in addition to the Nile Delta port of Damietta, MENA said- Reuters