Despite the extraordinary timing, the events appear to have been separate. The object that generated widespread curiosity from North Park to inland San Diego County was flying at an altitude of roughly 54,000 feet and appears to be a sophisticated stratospheric airship operated by New Mexico-based aerospace company Sceye. Meanwhile, San Diego International Airport has now confirmed that airport personnel identified two other objects in the immediate vicinity of the airport Friday afternoon: one a drone and the other a weather balloon.
"At 2 p.m. today, a drone and a weather balloon were identified in the immediate vicinity of San Diego International Airport," an airport spokesperson told SanDiegoVille in a statement Friday. "In response, the Federal Aviation Administration (FAA) temporarily paused arrivals and departures."
The FAA reported an all-clear as of 4:30 p.m., according to the airport, and all airport operations subsequently resumed. Airport officials said Airfield Operations continues monitoring the situation in coordination with the FAA, Transportation Security Administration and local law enforcement, while TSA law enforcement is investigating the drone activity.
The airport's confirmation provides the clearest explanation yet for a chaotic afternoon that saw departing aircraft sitting on the ground, arriving flights placed into holding patterns and some San Diego-bound aircraft diverted elsewhere. It also adds another unusual wrinkle to an already bizarre afternoon in San Diego's skies: one of the objects near the airport was itself a weather balloon, separate from the enormous high-altitude craft being spotted and tracked far above the region.
Flight-tracking screenshots shared Friday identified that much higher craft as HBAL124, registration N519HB, and classified it as a high-altitude balloon. At one point, tracking data showed it near 53,800 feet and traveling approximately 53 knots over inland San Diego County.
Online sleuthing quickly pointed toward Sceye, a company developing enormous unmanned lighter-than-air vehicles known as High Altitude Platform Systems, or HAPS. That identification is particularly compelling because Sceye has a platform currently returning to the United States following an extraordinary trans-Pacific mission to Japan.
Sceye announced this week that its Service Test 1, or ST1, mission departed New Mexico on August 9 and traveled more than 15,000 kilometers across the Pacific Ocean in 13 days before reaching Japanese airspace. The platform remained in managed Japanese airspace for more than seven days while conducting telecommunications testing with Japanese technology giant SoftBank before beginning its return trip to the United States. As of Sceye's September 2 announcement, the platform remained in flight over the Pacific headed back toward the U.S.
The platform operated over Japan at approximately 16.5 kilometers in altitude, or roughly 54,000 feet, virtually identical to the altitude reported for HBAL124 above San Diego Friday.
The technology is designed to occupy a layer of the atmosphere between conventional aircraft and satellites. Sceye's platforms are intended to remain in the stratosphere for extended periods while carrying telecommunications and environmental-monitoring equipment. The company says it first reached its target stratospheric altitude in 2021 and has spent subsequent years testing connectivity, positioning, endurance and other real-world applications.
During the Japan demonstration, Sceye and SoftBank successfully connected ordinary mobile devices to the platform and demonstrated text messaging, voice calls, internet access and video streaming. Testing also included emergency communications, onboard edge computing and communications with drones. Sceye says a full-scale HAPS platform is designed to cover an area comparable to approximately 500 terrestrial cell towers.
But while San Diegans were trying to identify the exceptionally high-flying object Friday, an entirely different aerial problem was unfolding much closer to the ground.
The airport's statement confirms that at approximately 2 p.m., both a drone and a weather balloon were identified in the immediate vicinity of San Diego International Airport. The FAA responded by temporarily pausing both arrivals and departures, confirming what passengers had been reporting from aircraft and terminals throughout the afternoon.
In a Reddit thread posted Friday, a passenger waiting to depart SAN reported that their aircraft had been first in line for approximately 30 minutes while a drone was reportedly located about three miles north of the airport. According to the passenger's account, a law-enforcement helicopter was monitoring the object while aircraft initially continued landing but departures were not being authorized.
The same passenger later reported hearing a pilot say that a second aerial object had appeared while the first was leaving. What passengers at the time interpreted as multiple drones may now have included the weather balloon subsequently identified by airport personnel, although SanDiegoVille has not confirmed whether those reports referred to the same objects described in the airport's statement.
The disruption quickly began cascading through the air-travel system. A traveler aboard United Airlines Flight 1302 from Denver to San Diego reported that the cockpit announced arrivals had also been halted because of unauthorized drone activity and that the aircraft would remain in a holding pattern for at least 25 minutes.
Other travelers reported San Diego-bound flights from Sacramento, Calgary, Phoenix and other cities being diverted to Los Angeles, while passengers at San Jose said multiple San Diego-bound flights were backing up there. One traveler said a Delta flight ultimately had to deplane after the disruption caused its pilot to reach the maximum allowable duty time.
Another passenger aboard a Sacramento-to-San Diego flight reported an unexpected landing at LAX because the aircraft had limited remaining fuel. Flight-tracking imagery shared online also showed a law-enforcement helicopter operating near the airport during the incident.
By 4:30 p.m., however, the FAA had given the all-clear and all operations at San Diego International Airport resumed, according to the airport. Residual delays were expected as airlines worked through the accumulated backlog created during the roughly two-and-a-half-hour disruption.
Federal aviation data reviewed by SanDiegoVille shows Friday was already expected to be a difficult travel day at SAN. The FAA's morning operations plan listed San Diego among airports where a ground stop or delay program was possible because of traffic volume, and the agency subsequently implemented a traffic-management program for SAN because of compacted demand.
That means not every delay experienced Friday can necessarily be attributed to the aerial objects. The airport has now confirmed, however, that the drone and weather balloon caused the FAA to pause both arrivals and departures, establishing that the objects directly disrupted airport operations.
Perhaps the strangest element of Friday's events is that the confirmed weather balloon near the airport apparently was notthe same high-altitude object that had San Diegans staring skyward and posting photographs earlier in the day.
Nothing currently indicates that the extraordinarily high-altitude apparent Sceye platform and the objects that caused the airport shutdown were related. The apparent Sceye craft was flying at approximately 53,000 to 54,000 feet, more than ten miles above sea level and far above the immediate airport environment. Airport officials, by contrast, specifically described the drone and weather balloon as being in the "immediate vicinity" of San Diego International Airport.
That distinction is especially important now because photographs of the high-altitude craft circulating Friday could easily create the impression that the mysterious balloon-like object visible across San Diego was responsible for shutting down the airport. Based on the information currently available, there is no evidence that it was.
There is also not yet public confirmation from Sceye that HBAL124/N519HB is the specific ST1 platform returning from Japan, although several pieces of evidence strongly point in that direction: its altitude closely matches the Japan mission, Sceye confirmed only two days earlier that ST1 remained airborne on its return journey across the Pacific, and the object tracked over San Diego appears consistent with the company's unusual stratospheric aircraft.
SanDiegoVille has reached out to Sceye seeking confirmation that HBAL124/N519HB is its returning Japan platform and additional information about the craft's remarkable route.
Meanwhile, questions remain about the drone that caused Friday's airport disruption, including who was operating it, why it was flying near the airport and whether authorities were able to locate its operator. San Diego International Airport says TSA law enforcement is investigating the reported drone activity, while airport personnel continue monitoring the situation in coordination with federal and local authorities.
For several hours Friday, San Diego had the remarkable distinction of dealing with three unusual objects in its skies at essentially the same time: an apparent experimental stratospheric airship floating roughly ten miles overhead, a separate weather balloon near one of the country's busiest single-runway airports and a drone close enough to the airport to help bring commercial flight operations to a temporary standstill.
And despite the inevitable UFO jokes, authorities have now identified two of those objects, while the third appears to have a very earthly - albeit technologically remarkable - explanation.
Originally published September 4, 2026. Updated September 4, 2026, following a statement from San Diego International Airport confirming the drone and weather balloon and the temporary suspension of airport operations.
