Sumit Rajak, who consumed poison, was rushed to a private hospital after the Kolkata-Delhi SpiceJet flight made an emergency landing.
"After being alerted by the pilot about the medical emergency, arrangements were made for the emergency landing," airport director A.K. Dixit told reporters.
According to police, Rajak is being treated at the Ajanta Hospital.
"He is out of danger now. We are yet to ascertain why he attempted suicide on board," Police Inspector Rakesh Kumar told reporters.