These 2 Countries Have 4x More Domestic Airline Capacity Than Any Other

According to OAG, as of March 2025, 736 airlines are operating around the world, and these fly in and out of the 3,936 airports currently in operation. When it comes to the world’s largest domestic markets, the first two are far ahead of the rest of the domestic markets. The United States’ domestic market remains the world’s largest and will continue to be the biggest until it is overtaken by China by 2043, according to current forecasts. India has the world’s third-largest domestic market. However, India is a distant third behind China. Here is what to know about the world’s two largest aviation domestic markets.