Two flights landed in emergency conditions at Kolkata's NSC Bose international airport on Saturday after passengers complained of illness onboard. Airport sources said an Emirates flight coming from an airport in China to Dubai made an emergency landing after a passenger complained of illness at about 1.30am. A Singapore-New Delhi Jet Airways flight made an emergency landing following a passenger's illness at about 2am, sources said. Both the passengers were admitted to the medical camp of the airport and the planes took off an hour later for their destinations, sources said.