How many airlines are there?

Asking how many airlines exist in the world is trickier than it sounds, because there is no single registry: every country certifies its own commercial air operators, from major flag carriers to small charter operators with one or two aircraft. There is, however, a clear reference point. The International Air Transport Association (IATA) describes itself as the trade association for the world's airlines and states that it represents more than 370 airlines, accounting for around 85% of global air traffic. That group includes nearly all major network carriers and a large share of the relevant low-cost airlines.

Beyond IATA members there are hundreds of smaller operators: regional airlines flying under a larger carrier's brand through codeshare agreements, pure cargo carriers, tourist charter operators and state-owned companies running occasional commercial flights. Adding up every holder of a commercial air operator certificate issued by national authorities, the total number of active airlines worldwide runs into the thousands, even though a very small share of them carries the vast majority of passengers. No institution publishes that consolidated total, so any round number circulating online comes from private databases, not an official census.

Air transport is one of the most volatile industries: new airlines are launched every year, especially low-cost and regional carriers, while others go bankrupt or merge following fuel crises, price wars, or, as happened in 2020, a pandemic that grounded much of the world's fleet for months. That is why even IATA's figure shifts from year to year.