Tourism, a mainstay of foreign revenue in Egypt, took a hammering, with travelers flocking to the airport in search of escape.

The exodus of foreigners and Egyptians from Cairo surged Tuesday as dozens of evacuation planes arrived, but the airport itself was still in disarray, overwhelmed with over 4,500 stranded passengers.

The United States sent in nine charter flights Monday to Cairo and more were slated for Tuesday.

National carrier EGYPTAIR has been canceling about 75 percent of its flights because it is unable to field the necessary crew amid the 17-hour emergency curfew imposed on the Egyptian capital.

EGYPTAIR calls upon its customers abroad to contact its worldwide offices or visit its website to check the status of their flights. Customers in Egypt should contact the national call center on 090070000 from any land line.

All EGYPTAIR employees are doing their best to contain the situation and facilitate the process for their customers.