The airport remained open and planes continued to land through the day, Press Trust of India reported. Some incoming flights from Europe were diverted to New Delhi.

Two five-star hotels in Mumbai and other targets, including a Jewish community center, were attacked Wednesday by gunmen. By late Thursday, more than 100 people were reported dead as government forces tried to bring the city under control.

About 30 percent of those with reservations from Delhi to Mumbai can canceled, airlines reported. Kingfisher Airlines said that scheduled flights to Mumbai from Delhi, Bangalore, Nasik and Hyderabad were combined because there were so few passengers.

While travelers in Mumbai were trying to get out as soon as possible, some residents of the area apparently decided to postpone travel plans. Singapore Airlines said its flights out of the city left on time with some no-show passengers.

Airlines warned passengers to and from Mumbai to make sure they had valid identity cards and to leave plenty of time for security checks.