Union Ministers Prakash Javadekar and Piyush Goyal were later flown to Delhi and Mumbai respectively by other flights.
Jet Airways flight 9W 404 which was scheduled to depart for Mumbai at 1620 hours could not take off because the airlines could not get a pilot to operate the aircraft.
Repeated calls and text messages sent to Jet Airways' spokesperson did not yield any response.
This is the second time in last two days when a Jet Airways flight has been delayed due to non-availability of pilot as on Wednesday its Toronto-bound flight from Delhi via Brussels was grounded for nine hours for the same reason.
The airline had claimed that Toronto-flight was initially delayed due to some "technical" reasons and later because of the restrictions on pilots' flying timings.