At least 23 people, including 10 militants, were killed in the attack.
"Over 23,000 Central Industrial Security Force (CISF) personnel, deployed at the 59 Indian airports, were informed to be more vigilant just after the terror attack on Jinnah airport," CISF spokesperson Hemendra Singh told IANS.
"As there is enough deployment of security personnel at all these airports, we have no need to increase the force. But, all the officials deployed have been asked to keep a close watch on all movements of passengers and other people," he said.
Officials have been asked to take quick action if they find anyone involved in suspicious activity, he said.
Delhi's IGI Airport, whose inner security is covered by over 5,000 CISF personnel and outer security by Delhi Police officials, has been kept under tight vigil following the attack on the Pakistani airport, a police official said.