Flights disrupted as China drills encircle Taiwan unfolded over 29, 30 December 2025, when Beijing launched the large-scale live-fire exercises it called “Justice Mission 2025.” The drills, framed by Chinese officials as a stern warning over a recent US $11.1bn arms sale to Taiwan, immediately affected civilian airspace and passenger movements in and around the Taipei Flight Information Region (FIR).
The sudden imposition of temporary live-fire zones, heavy PLA air and naval activity, and last-minute notices to aviation authorities combined to produce widespread rerouting, cancellations and heightened monitoring. Taiwan and international authorities scrambled to protect civilian flights while responding to what many described as a politically timed show of force.
Scale and composition of the drills
Beijing labeled the operation “Justice Mission 2025,” and deployed a heavy mix of assets around the island. Reuters and Taiwanese sources documented dozens of aircraft and vessels , one dispatch cited 71 aircraft and 24 naval assets in a single report , while Taiwan’s Ministry of National Defense (MND) said up to roughly 130 aircraft and multiple warships and coastguard vessels were observed during the period.
Activity included large numbers of sorties, with Taiwan reporting that about 90 PLA aircraft crossed the Taiwan Strait median line during the operation. Live-fire components were also reported: some outlets noted seven rockets fired into designated drill zones, while other Taiwanese reporting later put the number of rockets at 27 as part of the exercises.
Although Chinese statements framed the drills as a deterrent to external interference and a response to arms sales, their scale and tempo created a significant safety and diplomatic challenge by intersecting with major civilian air routes and the busy maritime approaches around Taiwan.
Immediate impact on flights and passengers
Taiwan’s Civil Aviation Administration (CAA) estimated the drills could affect nearly 900 flights entering the Taipei FIR and more than 100,000 international and domestic air travelers. Detailed CAA figures published by local media reported that about 857 international flights , broken down as 296 outbound, 265 inbound and 296 transit , risked being affected during the exercise window.
Initial reports indicated that more than 80 domestic flights had been canceled, with roughly 6,000 domestic passengers affected. The CAA later clarified that 36 domestic flights were canceled , 29 to Kinmen and seven to Lienchiang (Matsu) , and coordinated extra Kinmen services once the window for safe flights reopened.
Airlines, airports and travel agencies dealt with a mix of delays, rebookings and passenger service challenges as the exercises coincided with year-end travel. Transit traffic, in particular, faced complex reroutes that added flight time and operational strain for carriers traversing the region.
Airspace restrictions and temporary zones
Chinese notices established multiple temporary live-fire zones restricting aircraft from entering designated areas during exercise hours. Taiwan’s CAA reported seven such zones, with activity concentrated at specified times (for example, exercise windows reported around 08:00 to 18:00 local time on drill days), creating wide no-fly corridors that crossed established civil routes.
Taipei criticized how the notices were issued, saying China gave only one day’s advance warning , a practice it said contravened customary international civil aviation rules and ICAO guidance on advance notification for activities that affect civilian air traffic. The late notice compressed planning time for reroutes and passenger advisories.
Because some of the temporary zones overlapped common transit lanes, many international flights were forced to deviate around the drills; a few routes to Japan reportedly remained unaffected, but numerous transit paths required alternative routing and altitude changes to maintain separation from live-fire areas.
Outlying islands and domestic connectivity hit hardest
Routes to Taiwan’s outlying islands, particularly Kinmen and Lienchiang (Matsu), were completely blocked during portions of the exercises. The temporary closures forced cancellations of island services and significant inconvenience for island residents and travelers dependent on short-haul links to the main island.
Local authorities reported that essential passenger movements and supply chains were a priority in rescheduling, and the CAA coordinated extra Kinmen flights after the drills to alleviate the backlog. Still, island communities experienced disruption to healthcare visits, business travel and family reunions during the holiday period.
Some international routes , three to Japan were reported unaffected in early accounts , showed the uneven nature of the disruption: while high-altitude international lanes could be rerouted, low-altitude, short-hop flights to nearby islands had fewer alternatives and therefore bore a heavier share of cancellations.
Air-traffic management and regional coordination
Taiwan’s Air Navigation and Weather Services activated traffic-flow management procedures to handle the surge in rerouting and to preserve safety margins. Air-traffic controllers coordinated with neighboring FIRs to ensure aircraft could bypass the drill zones while maintaining orderly flows across the busy Northeast Asian airspace.
Flights from adjacent FIRs such as Fukuoka, Hong Kong and Manila were guided by radar and alternative routing plans to skirt the live-fire areas. Controllers had to sequence arrivals and departures differently, altering slot timings and fuel planning for many carriers to accommodate longer transit times.
The compressed notice period hampered some coordination, but civil authorities and airlines reported intensive, round-the-clock planning to minimize risks to commercial aviation. The episode highlighted both the robustness and limits of regional aviation coordination when military activity intersects civilian routes on short notice.
Political messaging and diplomatic reactions
China framed the exercises as a “stern warning” against external meddling, with Foreign Ministry spokesperson Lin Jian saying any schemes to obstruct reunification were doomed to fail. Officials explicitly linked the timing to the recent US arms package to Taiwan, portraying the drills as a defensive and political signal.
Taiwanese leaders condemned the drills as irresponsible and destabilizing. Transport Minister Chen Shih-kai said Taipei “strongly protest[s] and condemn[s] … arrogant and unreasonable actions,” while President William Lai warned against misjudgment and pledged to keep the island’s defenses ready to protect civilian safety.
International reactions urged restraint. The UK and several European and regional partners publicly called for calm and warned against steps that would heighten cross-strait tensions. The diplomatic chorus emphasized the importance of preserving safe civil aviation and avoiding actions that could trigger miscalculation.
Aftermath and longer-term implications
Following the main exercise window, Reuters and Taiwanese reports said Chinese vessels began pulling back, though Beijing did not formally declare the end of all operations. Taiwan remained on high alert and continued monitoring PLA movements while assessing the broader operational and political fallout.
The drills underscored how military activity can directly disrupt civilian infrastructure and cross-border services. Aviation stakeholders have renewed calls for clearer advance notification and adherence to ICAO guidance so that civil safety is preserved even amid heightened tensions.
For Taipei and its partners, the incident is likely to fuel renewed discussions on contingency planning for transport resilience, enhanced air-traffic coordination, and diplomatic channels to reduce the risk of future drills intersecting with civilian airspace at short notice.
The incidents of 29, 30 December will likely be studied by aviation regulators, carriers and governments as an example of how geopolitical signaling can cascade into operational and humanitarian impacts , from canceled island hops to disrupted international transit routes.
Moving forward, ensuring predictable notification procedures and robust regional coordination will be critical to balancing military activities with the uninterrupted operation of civil aviation in one of the world’s busiest airspaces.
Flights disrupted as China drills encircle Taiwan remains a phrase that captures both the immediate travel chaos and the broader security challenge posed by large-scale military exercises near dense civilian air and sea lanes. The episode has left Taiwan and regional partners considering how to shore up both safety and diplomatic buffers before future escalations occur.
