The Chinese Aviation Market: Big Three Airlines, C919, and COMAC

Market Scale: The World's Largest Domestic Aviation Market

China's domestic aviation market is, by many measures, the largest in the world. Chinese carriers transported approximately 620 million domestic passengers in 2019 — the last pre-pandemic peak year — and have been on a recovery trajectory since COVID restrictions were lifted at the end of 2022. China's domestic market surpassed the United States in total domestic passenger volume for the first time in 2023, reflecting both China's enormous and increasingly mobile population and the maturation of the aviation system that the Chinese government has systematically built over four decades.

The scale of Chinese aviation is a product of deliberate state investment and policy. China has built more than 250 commercial airports since 1990, connecting cities that previously had no air service. High-speed rail, which China has also built at world-record pace, competes with aviation on routes under 1,000 kilometers, but China's geographic scale — the country spans five time zones and contains distances from Beijing to Urumqi that exceed those from New York to Los Angeles — means that aviation is essential for long-haul domestic connectivity. The combination of high-speed rail for short-haul routes and aviation for long-haul routes has created a transportation ecosystem that moves people at extraordinary scale.

The Chinese aviation market is organized around a hub-and-spoke model centered on five mega-hubs: Beijing Capital, Beijing Daxing (the new airport opened in 2019), Shanghai Pudong, Shanghai Hongqiao, and Guangzhou Baiyun. These airports, collectively handling several hundred million passengers annually, are the primary gateways to the world and the central nodes of the domestic network. Below the mega-hubs, a tier of secondary hubs — Chengdu, Kunming, Shenzhen, Hangzhou, Chongqing, Xi'an — provide regional connectivity. The airport development pipeline continues: China has announced plans for additional airports in smaller cities, with the eventual goal of bringing every county in China within reasonable distance of an airport.

International aviation from China was suppressed severely during the COVID pandemic. China maintained some of the world's strictest border controls and international flight restrictions well into late 2022, leading to a precipitous decline in international capacity and the exit or suspension of many foreign carriers' China routes. Recovery has been complicated by geopolitical factors — sanctions and overflight restrictions related to Russia's invasion of Ukraine have added significant time and cost to China-Europe routes, and political tensions have affected Chinese carrier access to some markets. International passenger traffic had not fully recovered to 2019 levels by 2024, in contrast to domestic recovery which was essentially complete.

Big Three Airlines: Air China, China Eastern, China Southern

Chinese commercial aviation is dominated by three state-owned carriers — Air China, China Eastern Airlines, and China Southern Airlines — that collectively control approximately 65-70% of domestic capacity and the vast majority of Chinese international routes. These carriers, all originally spun off from the Civil Aviation Administration of China (CAAC) when it separated regulatory and airline functions in 1987, are among the world's largest airlines by fleet size, passenger volume, and route network.

Air China is the designated national flag carrier, the only Chinese airline permitted to paint the national flag on its aircraft and the primary carrier for state-sponsored international operations. Air China is headquartered in Beijing and operates Beijing Capital and Beijing Daxing as its primary hubs. As a member of Star Alliance since 2007, Air China has code-share and cooperation agreements with Lufthansa, United Airlines, Singapore Airlines, and other Star Alliance members. Air China's international network is focused on North America, Europe, East Asia, and major commercial centers in the Middle East and Africa. Its cargo subsidiary, Air China Cargo, operates one of Asia's largest freight networks. Air China holds a 23.6% stake in Cathay Pacific, creating a structural linkage between the mainland Chinese carrier and Hong Kong's flag carrier.

China Eastern Airlines is headquartered in Shanghai and operates Shanghai Pudong and Shanghai Hongqiao as its primary hubs. A SkyTeam member, China Eastern has cooperation with Delta Air Lines, Air France-KLM, and Korean Air. China Eastern's Shanghai hubs give it particular strength on routes between China's commercial capital and global financial centers. The airline operates a large domestic network and has expanded internationally to North America, Europe, Australia, and Japan. A 2022 crash of a China Eastern Boeing 737-800 near Wuzhou in Guangxi province — killing all 132 people aboard — was the deadliest accident in Chinese aviation in many years and triggered a CAAC investigation that temporarily grounded China Eastern's 737-800 fleet before operations were restored.

China Southern Airlines is the largest of the three by fleet size and passengers carried. Based in Guangzhou, China Southern operates the Guangzhou Baiyun hub — strategically positioned to serve South China and Southeast Asia — along with secondary hubs in Wuhan, Shenyang, and Urumqi. China Southern departed SkyTeam in 2019 to pursue an independent commercial strategy, forming bilateral partnerships rather than alliance membership. The airline's decision has been interpreted as reflecting the Chinese government's desire for greater flexibility in negotiating commercial relationships without alliance constraints. China Southern's network includes extensive coverage of Southeast Asia and Australia, where Guangzhou's geographic position provides natural advantages.

All three carriers operate under the oversight of the CAAC and ultimately the Chinese government, which provides implicit financial backing that allows them to pursue network growth and fleet expansion programs that would be unsustainable for purely commercial operators. Government support has also meant that the carriers have not faced the market discipline imposed by bankruptcy risk — a double-edged sword that has funded growth but has also insulated management from the efficiency pressures that shaped commercial carriers in liberalized markets. Efficiency improvements in Chinese carriers have nonetheless been substantial as they have professionalized operations and adopted international best practices.

COMAC C919: China's Commercial Aircraft Ambition

The Commercial Aircraft Corporation of China's (COMAC) C919 represents China's most ambitious attempt to break the Boeing-Airbus duopoly that has dominated commercial aviation for decades. The C919 is a single-aisle narrowbody aircraft in the same category as the Boeing 737 MAX and Airbus A320neo — the workhorses of global commercial aviation. Its entry into service with China Eastern in May 2023 marked a milestone: the first domestic Chinese-designed and substantially domestically manufactured commercial jetliner to enter commercial service.

The C919 program has taken over two decades of development and billions of dollars of state investment to reach commercial service. COMAC was established in 2008 specifically to develop a domestic commercial aircraft industry, and the C919 was its primary project. The aircraft uses Western-sourced engines (CFM International LEAP-1C) and numerous Western avionics and systems components — a dependency that has been complicated by export control restrictions imposed by the United States and its allies in the context of US-China technology competition. Western governments have implemented or considered restrictions on the export of aviation technology to China that could affect COMAC's ability to obtain components for the C919 and its successor aircraft.

The C919's commercial performance in its initial years is being closely monitored. China Eastern, Air China, and China Southern have all placed orders, and the CAAC is supporting domestic adoption through regulatory pathways. Chinese airlines ordered approximately 1,000 C919s in a period of promotional orders, though industry analysts have noted uncertainty about whether all these orders represent firm commercial commitments or state-directed volume to support the program. The aircraft's economics, maintenance requirements, and operational performance in extended service will ultimately determine whether it becomes a genuine commercial competitor to Boeing and Airbus or primarily serves a domestic Chinese market that the government encourages to buy Chinese.

COMAC is also developing the CR929, a wide-body aircraft being designed in cooperation with Russia's United Aircraft Corporation (UAC). The CR929 project has been complicated by sanctions on Russia following the 2022 invasion of Ukraine, which have restricted Russian access to Western aviation technology that was to be incorporated in the aircraft. The project's timeline and specification remain uncertain. A successful CR929 would give COMAC a product competing directly with the Boeing 787 and Airbus A350 on long-haul routes — a far more strategically significant achievement than the C919, since the wide-body market represents the highest-value segment of commercial aviation. Both Boeing and Airbus are watching COMAC's development with intense interest and significant concern.

New Airport Construction: Infrastructure at Scale

China's airport construction program is without precedent in aviation history. The country built approximately 80 new commercial airports between 2000 and 2020, expanding its airport count from under 140 to over 250 civil airports. Beijing Daxing International Airport, opened in September 2019, is the most spectacular individual project: designed by Zaha Hadid Architects, it covers 700,000 square meters of terminal space — larger than any terminal building in the world — and was built in four years from groundbreaking to inaugural flight, a pace that would have been impossible under the regulatory and procurement systems of most developed countries.

The airport construction program has connected previously isolated regions. Airports in Tibet, Xinjiang, Yunnan, and other western provinces have opened air connections that were previously unavailable, dramatically reducing journey times to interior China from coastal commercial centers. Kashgar, in China's far northwest, now has multiple daily flights to major cities. Lhasa, at 3,600 meters elevation in Tibet, operates one of the world's highest airports with regular jet service. These connections have economic and political dimensions — the government has explicitly linked aviation connectivity investment in western regions to development and integration goals — but they also represent genuine transportation infrastructure that serves residents of historically isolated areas.

Urban airport expansion is ongoing. Chengdu Tianfu International Airport opened in 2021, giving Chengdu two major airports. Similar dual-airport plans exist for other major cities. The planned Guangzhou Baiyun Third Runway and terminal expansions, Shenzhen Bao'an expansion, and new greenfield projects will add significant capacity to China's aviation system in the 2020s. The government's 14th Five-Year Plan (2021-2025) identified civil aviation infrastructure investment as a priority, with particular focus on cargo airports — China's e-commerce boom has created enormous air freight demand that dedicated cargo airport capacity is needed to serve.

Chinese airports are at the forefront of digital technology integration. Facial recognition is used for boarding at many major Chinese airports, eliminating physical boarding pass and passport checks for domestic flights. Automated baggage handling, AI-based demand forecasting for staffing and resource allocation, and digital twin technologies for airport operations management are deployed at scale in China's newest airports. Beijing Daxing has been particularly celebrated for its technology integration, with seamless passenger flow from check-in through security through boarding enabled by biometric identification. These capabilities are being studied by airport operators globally as models for next-generation airport management.

International Expansion: Global Ambitions and Geopolitical Complexity

Chinese carriers have pursued aggressive international expansion as the government seeks to give Chinese airlines a position in global aviation commensurate with China's economic size. Air China, China Eastern, and China Southern collectively serve dozens of international destinations, and second-tier Chinese carriers including Hainan Airlines and Xiamen Airlines have developed significant international networks. The Belt and Road Initiative — China's global infrastructure investment program — has explicitly included aviation as a component, with Chinese carriers launching new services to cities along the Belt and Road corridor.

Hainan Airlines, until its parent HNA Group's collapse in 2020-2021, was the most globally ambitious of Chinese carriers. HNA's acquisition spree, which included stakes in or full ownership of multiple foreign airlines, hotels, financial institutions, and logistics companies, brought Hainan Airlines into global attention as a carrier operating transatlantic routes to New York, Chicago, Los Angeles, Boston, and Toronto. HNA's collapse — one of the largest corporate failures in Chinese history — reversed much of this expansion. Hainan Airlines continues to operate but at a substantially reduced scale, and its international network has been significantly trimmed.

Chinese carriers face specific challenges in international expansion that their domestic market position does not prepare them for. Operating in competitive international markets requires product quality that can attract non-Chinese passengers — a customer base that has historically been skeptical of Chinese carrier service standards. Regulatory reciprocity is another challenge: US-China aviation relations have been fraught, with the US Civil Aviation Board and DOT taking measures restricting Chinese carrier access to US routes during periods of geopolitical tension, and Chinese authorities responding in kind. The number of weekly US-China flights, which exceeded 340 pre-pandemic, had recovered only partially by 2024 due to regulatory restrictions on both sides.

Geopolitical factors add complexity to Chinese international aviation that purely commercial operators do not face. The overflight restrictions related to Russia's invasion of Ukraine have forced Chinese carriers to choose between maintaining Russian overflight rights (which most have done, accepting Western criticism) and accepting significantly longer routing for flights to Europe and North America. Western carriers cannot use Russian airspace, putting them at a competitive disadvantage on some China-Europe routes where Chinese carriers can fly shorter paths. This asymmetry has become a point of tension in US-EU-China aviation relations.