Flight operations to Dubai were affected after two Emirates flights returned to Kochi and Thiruvananthapuram airports following security concerns reported at the destination airport on Monday, authorities said. Flight EK533 departed Cochin International Airport Limited (CIAL) at 4.30 am with 325 people on board. En route, the aircraft was directed to turn back due to the sudden closure of Dubai International Airport, airport spokespersons said. The flight landed back at CIAL at 8.30 am, and the passengers were later disembarked, the spokesperson said. Apart from this, another Emirates flight bound for Dubai was cancelled, and both flights have been rescheduled for Tuesday, he said. Flights to other Gulf countries continued to operate from CIAL. Similarly, an Emirates flight bound for Dubai from Thiruvananthapuram returned to the airport here on Monday due to similar issues reported at the destination airport. The airport spokesperson said the Emirates TRVDXB flight returned midwa