Delhi Airport is among the 10 busiest airports in the world for the last month of 2025. Find out more about how the rankings are calculated below.

Global air travel ended 2025 on a busy note, with major aviation hubs reporting strong seat capacity for December, according to data released by OAG. The latest rankings underline how large hub airports continue to dominate year-end travel, driven by holiday movement, strong airline networks, and sustained demand across both domestic and international routes. Notably, India has secured a place among the world’s busiest airports, reflecting the country’s growing role in global aviation. OAG prepares separate rankings for “global airports” and “international airports.” The global list is calculated using total scheduled airline capacity, covering both domestic and international flights, while the international list looks only at seats allocated to overseas routes. This distinction is important, as airports with extensive domestic networks may appear busier by flight numbers, but not necessarily by total passenger-carrying capacity.