The Boeing 747 aircraft landed safely at 10.45 PM, airport sources said.
The plane from Jeddah, Saudi Arabia was scheduled to land at 11.10 PM but the pilot sought to make emergency landing when the fire alarm went off due to some technical glitch, they said.
All the passengers were safe, the sources said.
Meanwhile, another Air-India flight, carrying Mizoram Chief Minister Lal Thanhawla, to Aizawl from here had to return to Kolkata at about 2.20 PM when it failed to land in Aizawl due to bad weather.