If you’ve ever struggled to find a quiet flight between Cape Town and Johannesburg, the latest global aviation figures explain why.
The air route linking Cape Town International Airport and O. R. Tambo International Airport in Johannesburg has officially been named Africa’s busiest air route, with 3.4 million passengers travelling between the two cities in 2025.
The figures come from the International Air Transport Association’s (IATA) latest World Air Transport Statistics (WATS) report, which analyses passenger traffic and aviation trends across more than 1 300 airlines worldwide.
The Cape Town–Johannesburg air corridor has long been one of the busiest in South Africa, connecting the country’s two biggest economic and tourism hubs.
Business travellers, holidaymakers, government officials and international visitors all rely heavily on the route, resulting in dozens of flights operating in both directions every day.
According to IATA’s latest figures, that demand remained exceptionally strong throughout 2025, making the route the busiest anywhere on the African continent.
With 3.4 million passengers, it comfortably outperformed every other airport pair in Africa.
Although the Cape Town–Johannesburg route dominates in Africa, it faces stiff competition globally.
The world’s busiest air route in 2025 was the domestic connection between South Korea’s Jeju International Airport and Gimpo International Airport, which carried an astonishing 13.3 million passengers.
In fact, the world’s top 10 busiest airport pairs were almost entirely located in the Asia-Pacific region, highlighting the scale of domestic air travel across Asia.
The popularity of the route reflects South Africa’s unique geography and economy.
Cape Town is one of Africa’s leading tourism destinations and a major centre for finance, technology and government, while Johannesburg remains the country’s commercial and financial powerhouse.
For many travellers, flying is the only practical option.
A drive between the two cities covers roughly 1 400 kilometres and can take around 14 hours, while flights typically take just over two hours.
The route is also served by multiple airlines, offering frequent departures throughout the day, making it one of the most competitive and convenient air corridors in Africa.
Other busiest domestic routes across the world:
South America: Bogota to Medellin (Colombia) with 3.5 million passangers
North America: New York to Los Angeles (USA) 2.2 million passangers
Europe: Barcelona to Palma de Mallorca (Spain) with 2.1 million passangers
