REVEALED: The world's top 40 airports

Welcome to the 2021 Top 40 World Airports Guide where we reveal the busiest global gateways in a year unlike any other.

We also include the latest passenger data, runway specifications, airport codes, operator information and much more!

Horizon Air Embraer ERJ 0
A Horizon Air Embraer ERJ 175LR, N625QX (c/n 658) at Seattle-Tacoma International


About ACI

Airports Council International (ACI) is the association of the world’s airports. It is a non-profit organisation, whose prime purpose is to advance the interests of airports and to promote professional excellence in airport management and operations. ACI represents the collective positions of its membership, which are established through committees and endorsed by the ACI Governing Board. As of January 2021, ACI serves 701 members, operating 1,933 airports in 183 countries. These views reflect the common interests of the global airport community.

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