The flight (9W-2642), operating with ATR 72 aircraft, took off from Amritsar as per schedule and was to land at Delhi airport at 6.25 A.M.
"But as it was approaching Delhi, pilots detected a smoke alarm light blinking in the cockpit and sought permission from air traffic control for emergency landing," airport sources said.
The plane was cleared for landing, with full emergency preparation, and it touched down at 6 A.M., they said.
"It was an uneventful landing and all passengers are safe. Safety is given top priority at Jet Airways," the spokesperson said.