Travel

Busiest airports

Atlanta's ATL handles more passengers than any other airport on Earth — and has done since 1998.

Unit passengers (millions/year) Source ACI World Airport Traffic 2023 Entries 25

Headline finding

Atlanta (ATL) leads the world for busiest airports at 104.7M passengers (millions/year).

What the numbers show

Atlanta (ATL)'s lead at the top of this ranking is 20.3% above the second-place country — comfortable but not insurmountable — a credible challenger could plausibly close that gap over a decade.

The five countries leading the table — Atlanta (ATL), Dubai (DXB), Dallas/Fort Worth (DFW), London Heathrow (LHR), Tokyo Haneda (HND) — together set the global benchmark. The next 20 countries fill the rest of the table, with Bangkok Suvarnabhumi (BKK) anchoring the list at 51.7M.

Figures are drawn from ACI World Airport Traffic 2023. We use this source because it produces a single, internally consistent dataset rather than aggregating from national statistics offices, which makes year-on-year comparison reliable. The next update is expected when the source publishes its next annual release — see the methodology section below for which year of data is currently shown.

Methodology and caveats

What this measures
passengers (millions/year)
Source
ACI World Airport Traffic 2023
Coverage
Top 25 countries shown. Full source dataset covers all 195 sovereign states where data is available.
Refresh cadence
Updated annually as the source publishes new figures, typically autumn or spring.
Known caveat
Country definitions follow the source: where the UN, the World Bank and the CIA Factbook disagree on borders or recognition, we use the figure as published rather than reconciling between bodies. Comparisons across rankings should be made with this in mind.

Frequently asked

Which country tops the ranking for busiest airports?

Atlanta (ATL) leads with 104.7M passengers (millions/year). Dubai (DXB) is second at 87.0M, with Dallas/Fort Worth (DFW) in third place. Full top-10 with sources is above.

What's the source for the busiest airports ranking?

The figures come from ACI World Airport Traffic 2023. We use this source because it publishes a complete country-by-country dataset using consistent methodology — the alternative of mixing national statistics offices would compromise comparability. Updated annually with the latest available vintage of the data.

How often are the busiest airports figures updated?

Once a year, in line with the source institution's publishing schedule. Major institutions like the World Bank, IMF and UNESCO publish annual updates in different months — typically autumn or spring — and the figures here reflect the most recently published vintage. The source footer on the ranking table shows which year's data is currently displayed.