The blaze began around 5:30 PM (1500 IST) in one of the parking berths and one person was injured, police said.
"When a loading vehicle was loading cargo onto the plane it caught on fire," a police spokeswoman said, adding that it was an empty American Airlines flight.
Photos on social media showed the fire blazing, with black smoke rising near the belly of the plane in between the right wing and tail wing.
The plane was bound for Los Angeles, according to the airport website.
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