The airline said that the plane was "diverted" to Lucknow after a "security threat" was detected on board. In a press statement, an IndiGo spokesperson said that a "security threat was noticed onboard IndiGo flight 6E 6650 operating from Delhi to Bagdogra on 18 January due to which the aircraft was diverted to Lucknow". According to officials, Air Traffic Control (ATC) received information at around 8.46 AM about a bomb threat on IndiGo flight 6E-6650. According to a statement issued by the Lucknow police commissionerate, after landing, the aircraft was immediately parked in an isolation bay. A handwritten note on a tissue paper was found in the aircraft bearing the words "Plane mein bomb" (bomb on the plane), the police said.

Source: The Telegraph January 18, 2026 23:11 UTC