The International Air Transport Association (IATA) has released the latest edition of the World Air Transport Statistics (WATS), offering a comprehensive snapshot of global aviation performance through to 2025.
Global aviation continued to expand in 2025, but the industry’s strongest growth was concentrated across premium cabins, emerging passenger markets and newer aircraft models.
WATS uses operational and financial information reported directly by more than 250 international airlines. The wider IATA Annual Statistics collection incorporates data from 1,315 carriers.
Premium traffic reaches nearly 110 million passengers
International business- and first-class traffic reached 109.7 million passengers in 2025, increasing 4.5% over the previous year. Premium passengers accounted for 5.5% of all international travellers, but the segment’s performance varied substantially between regions.
Even though it decreased by 2.7%, Europe remained the world’s largest premium market by volume recording 39.7 million passengers. Latin America delivered the fastest growth, with premium traffic climbing 22.1% to four million passengers.
The growth indicates that demand for premium travel remained resilient in 2025, particularly in North America and the Middle East, where business- and first-class passengers formed a larger share of international traffic. For airlines, this supports continued attention to premium cabins, lounges, loyalty benefits and ground services.
Asia operates nine of the world’s ten busiest routes
The Jeju–Seoul Gimpo connection remained the world’s busiest airport pair, carrying 13.3 million passengers during 2025. Nine of the ten busiest airport pairs were located in Asia Pacific. The only exception was the Jeddah–Riyadh route in Saudi Arabia.
Every route in the global top ten was domestic, demonstrating that aviation’s largest passenger flows continue to come from dense, high-frequency domestic corridors rather than major intercontinental services.
Cape Town–Johannesburg was Africa’s busiest airport pair, carrying 3.4 million passengers, while Bogotá–Medellín led Latin America with 3.5 million.
Barcelona–Palma de Mallorca remained Europe’s busiest route, with 2.1 million passengers. Stockholm–Malmö was the continent’s fastest-growing airport pair, rising 85% to 271,031 passengers.
In North America, New York JFK–Los Angeles was the busiest domestic route with 2.2 million passengers. JFK–London Heathrow was the region’s largest international airport pair, carrying 2.1 million.
The rankings highlight the scale of domestic aviation in Asia, where dense, high-frequency routes generate some of the world’s largest passenger flows. For airlines and airports, these corridors require substantial capacity and reliable operations across relatively short sectors.
India holds sixth place among global passenger markets
The United States remained the world’s largest passenger market, recording 890.1 million arriving and departing passengers in 2025. However, it was also the slowest-growing market among the global top ten, increasing only 1.6% from 2024.
China ranked second with 776.1 million passengers, up 4.8%, followed by the United Kingdom with 269.7 million and Spain with 252.7 million.
India remained the sixth-largest passenger market globally, recording 218.2 million passengers, an increase of 3.3%. It ranked narrowly behind Japan, where passenger numbers grew 9.2% to 223.5 million. India’s relatively moderate growth suggests that the country’s long-term aviation opportunity is not yet translating evenly into passenger volumes. Capacity constraints, aircraft availability and airport infrastructure will continue to influence how quickly the market closes the gap with larger aviation economies.
Some of the fastest expansion came from smaller Central Asian markets. Kazakhstan’s passenger numbers surged 40% to 18.1 million, while Uzbekistan grew 16.9% to 12.5 million.
Vietnam also recorded strong growth, with passenger numbers increasing 14.8% to 80.9 million.
Although these markets remain substantially smaller than India, China or the USA, their growth rates point towards emerging opportunities for airlines, airports and travel intermediaries evaluating future network development.
New-generation aircraft gain a larger operational role
Boeing and Airbus narrowbody aircraft remained the most widely operated aircraft families in 2025.
Boeing 737 variants completed 10.8 million flights, up 12% from the previous year. The Airbus A320 followed with 8.7 million flights, while the larger Airbus A321 operated 4.2 million. Compared with 2019, A321 flights increased 61.6%, reflecting airlines’ growing preference for larger narrowbody aircraft that can carry more passengers and operate longer routes without the economics of a traditional widebody.
The Airbus A220 recorded the fastest proportional expansion. Flights increased from 61,000 in 2019 to 530,000 in 2025, a rise of more than 770%.
A similar transition was visible across long-haul fleets. Boeing 787 flights increased 40.8% compared with 2019, while Airbus A350 operations more than doubled, rising 117.4%.
The Airbus A380 moved in the opposite direction. It operated approximately 90,000 flights in 2025, 24.4% fewer than in 2019.
The contrast reflects a wider fleet shift towards aircraft that provide lower fuel consumption and greater flexibility across varying levels of demand. Airlines are increasingly favouring aircraft that can serve long routes profitably without depending on the very high passenger volumes required by the A380.
Taken together, IATA’s 2025 figures show an aviation industry growing along several distinct tracks. Premium demand is strengthening, Asian domestic corridors continue to generate unmatched traffic, emerging passenger markets are expanding quickly and airlines are deploying newer aircraft capable of operating a wider variety of routes more efficiently.