Drone Grounds 22 Flights at Vietnam’s Busiest Airport in First-Ever Intrusion

Unauthorized drones forced a complete two-hour shutdown at Tan Son Nhat International Airport in Ho Chi Minh City on Tuesday evening — grounding or diverting at least 22 flights across five carriers — in what a senior Southern Air Traffic Management Corporation official confirmed as the first time an unmanned aerial vehicle has ever breached controlled airspace at Vietnam's busiest airport. The shutdown exposed a critical gap: the airport, which handled 42.4 million passengers in 2025, operates without drone-detection equipment despite the aviation regulator's own public proposals to install it months ago.

Air traffic controllers at Tan Son Nhat Airport received the first alert at 6:16 p.m. local time on August 11, 2026, after a departing Boeing 777 operating flight 3S621 reported spotting a drone about 500 meters to its right at an altitude of 1,800 feet. Moments earlier, an incoming Vietjet flight from Cam Ranh had also logged a sighting roughly 10 miles out at 3,000 feet. At 6:28 p.m., the control tower ordered a full suspension of all arrivals and departures under the airport's contingency protocol for airspace violations, according to Nguyễn Công Hoàn, Deputy Director of Tan Son Nhat International Airport.

The airport briefly cleared to resume operations at 7:16 p.m. — then shut down again at 7:40 p.m. when a second drone was detected moving in a west-southwesterly direction. Full operations did not resume until 8:34 p.m., leaving a two-hour-plus window of disruption during the evening peak, Vietnam's busiest departure slot for domestic routes. Delays cascaded to flights from Pleiku, Chu Lai, Hai Phong, Cam Ranh, Hanoi, and Quy Nhon, which were scheduled to land at Tan Son Nhat between 6:40 and 8:35 p.m.

Which Airlines and Flights Were Hit?

The disruption struck five carriers. Vietnam Airlines bore the heaviest load, with at least 12 of its flights forced to hold or divert to alternate airports, according to the airline's disruption statement; its outbound flights from Ho Chi Minh City were also blocked from taking off. Sun PhuQuoc Airways, Pacific Airlines, and Viettravel Airlines were among the other carriers affected. Vietjet confirmed separately that several of its services had to circle or divert after the drone was detected. An international contingent also caught in the closure included Singapore Airlines flight SQ186 and Malaysia Airlines flight MH766, both listed among incoming flights that could not land. Several diverted aircraft were routed to Can Tho Airport in the Mekong Delta, more than 150 kilometers from Ho Chi Minh City.

Vietnam Airlines advised passengers to check flight status through its website, app, or hotline and directed travelers already at the airport to contact airline staff. Vietjet issued similar guidance, asking passengers to monitor email, SMS, and the airline's official channels. Neither carrier had announced a compensation or reimbursement policy for the diversion as of publication.

Vietnam's Busiest Airport Had No Drone Detection Equipment Before Tuesday

The event is particularly significant because it was entirely predictable. The Civil Aviation Authority of Vietnam (CAAV) had spent the preceding months documenting an escalating series of drone intrusions at the country's airports and explicitly calling for detection equipment to be installed. In March 2026, CAAV Deputy Director Ho Minh Tan told a government meeting that drone-aircraft collision posed "a direct threat to aviation safety" and asked the Ministry of National Defense, the Ministry of Public Security, and provincial authorities with airports to strengthen prevention measures and "finalize coordination regulations" to address the gap. The CAAV simultaneously proposed installation of early-warning UAV detection equipment at airports across the country.

As of Tuesday's incident, no such equipment was operational at Tan Son Nhat, according to multiple accounts of the event in Vietnamese-language and state media. The airport instead relied on pilot reports — it was a departing crew and an incoming crew who separately spotted the drones and radioed warnings to the tower, triggering the response.

A Pattern Across Four Vietnamese Airports, Now Reaching the Biggest

Tuesday's intrusion did not occur in isolation. Between September 2025 and February 2026, the CAAV recorded repeated UAV incursions into Da Nang International Airport's controlled airspace at distances of three to twelve nautical miles and altitudes of 1,000 to 3,800 feet. During the Lunar New Year holiday in February 2026, 54 aircraft were forced to hold or alter their approaches in a five-day stretch. Vietnam Airlines estimated those incidents cost the airline approximately 5.6 billion Vietnamese dong — roughly $220,000 — and disrupted around 9,200 passengers.

On March 15, 2026, a drone spotted near the landing approach at Cat Bi Airport in Hai Phong forced four flights to divert to Noi Bai in Hanoi and kept operations abnormal until after midnight. In early June 2026, a drone sighting near Noi Bai itself stopped departures for approximately one hour and delayed 16 flights. In each case the response was reactive — pilots spotted the drone and called it in — because detection equipment was not in place. Tan Son Nhat is the largest airport in the country and, by Tuesday evening, also the most recently struck.

Are Drones Allowed Near Vietnam's Airports?

Vietnamese law strictly prohibits drone flight within 8 kilometers of any airport. As of July 1, 2026 — six weeks before Tuesday's incident — Vietnam upgraded the legal classification of illegal drone use at or near airports, explicitly designating it a "prohibited aviation act" under amended civil aviation legislation. Violators face administrative fines of 8 to 12 million Vietnamese dong (roughly $315 to $475) and possible equipment confiscation; the revised law also opens the door to more serious charges.

Beyond the no-fly restriction, all drone operations in Vietnam require a flight license applied for at least 14 days in advance through the Ministry of Defense's Operations Bureau. The CAAV and Ministry of Defense run parallel oversight of drone activity, a dual-authority structure that aviation observers have noted often complicates enforcement response. No drone operator had been identified or arrested in connection with Tuesday's intrusion as of the time of this report, and the investigation was described as ongoing.

What Affected Passengers Should Do Now

Travelers whose flights operated into or out of Tan Son Nhat on the evening of August 11, 2026, should contact their carrier directly to confirm whether their booking was affected and to ask about rebooking or reimbursement options. Passengers diverted to Can Tho should note that no official ground-transportation assistance had been announced by the airport authority or airlines at the time of publication. International travelers connecting through Ho Chi Minh City who missed onward flights should contact their carrier's rebooking desk and request documentation of the disruption — a force-majeure incident caused by a confirmed airspace closure — to support any claims for accommodation or alternative routing. Passengers can verify current flight status at FlightAware's Tan Son Nhat tracker or through their carrier's app.

The CAAV has advised the public, in the context of prior incidents, not to fly drones, kites, or any unmanned aircraft in or near airports, particularly in flight corridors. Visitors to Vietnam who travel with consumer drones should check Vietnam's drone permit requirements before bringing any device into the country; failure to comply carries fines and potential confiscation regardless of whether the drone is flown near an airport.

Originally published on Travelers Today