Two flights diverted after suspected drone spotted near Vietnam's Cat Bi Airport
Why It MattersRepeated drone sightings near Vietnamese airports show that airspace safety now depends on continuous detection coverage and coordinated response rather than isolated incident handling.
What happened
Two inbound flights bound for Cat Bi Airport in Vietnam were diverted to Noi Bai Airport on Wednesday evening after a suspected unmanned aerial vehicle was detected nearby, the Cat Bi Approach Control Center reported. Controllers received an alert from military forces at approximately 7:23 pm about a glowing airborne object roughly eight kilometres from the center in the direction of the airport, prompting immediate notification to relevant units and adjustment of flight operations.
The two inbound flights were instructed to hold at the HODOL holding point, and their crews subsequently requested diversion to Noi Bai. A third flight that had been preparing to depart Cat Bi was held on the apron.
The incident follows an earlier case at Noi Bai on August 30, when a surveillance system detected a flycam flying at an altitude of 92 metres over Quang Minh Industrial Park, about 4.5 kilometres from the airport. The device's operator said it was being used to monitor construction at a factory; police seized the flycam and referred the case to local authorities. Noi Bai's 360-degree drone surveillance system can detect flying objects within a 10-kilometre radius and operates around the clock.
Industry impact & what to watch
This case fits a broader run of drone and flycam sightings near Vietnamese airports, where approach and departure paths sit close enough to industrial and residential areas that even legitimate commercial drone use can trigger air traffic disruption. Airport operators in this situation depend on detection range and response time: a sighting eight kilometres out still forced holding, diversion and apron delay, showing how narrow the margin is between a routine flight and a diverted one once an unidentified object enters the approach corridor.
The Vietnam Air Traffic Management Corporation has already flagged the safety risk and called for stronger measures to detect and prevent unauthorized drone and flycam operations near airports. Whether that translates into wider deployment of surveillance systems like the one at Noi Bai, and how quickly airports coordinate with military and police units when a sighting occurs, will determine whether these incidents keep costing diversions or start getting resolved before aircraft are affected.
