Busiest Airport in the World: 2024 Data & 2026 Forecast
Every year, the same question lands in search bars and dinner-table debates: which airport is actually the busiest in the world? The answer changes with the metric, and right now the leaderboard splits down the middle — Atlanta’s Hartsfield-Jackson carried 108 million passengers in 2024, according to Airports Council International-North America, to keep its crown, while Dubai is closing fast on international traffic.
Busiest airport by passengers (2024): 108 million (ATL) ·
Consecutive years ATL has held the title: 25+ ·
Largest airport by land area: King Fahd International (DMM), ~780 km² ·
Busiest international airport: Dubai (DXB), 92 million international passengers ·
Airport with the most runways: Chicago O’Hare (ORD), 8 runways
Quick snapshot
- Hartsfield-Jackson Atlanta (ATL) led global passenger traffic in 2024 with 108,067,766 passengers and also posted the most aircraft movements, at 796,224 (Airports Council International-North America (the airport trade association))
- Dubai International (DXB) ranked second by passengers, with 92,331,506 (Business Standard (the business daily))
- Which airport takes the top spot in 2030 — long-range forecasts vary, and Chinese hub recovery is the wild card
- The final top-20 order for the current year, until ACI World certifies complete 2025 data
- Whether passenger volume or aircraft movements is the fairer definition of “busiest” — analysts still split on it
- ATL has held the passenger crown for most of the past 25 years, with Beijing Capital’s brief 2019 overtake (by some counts) the main exception (ACI World (the global airport body))
- Global flight activity is still just below its pre-pandemic 2019 peak (Business Standard (the business daily)) (ACI World (the global airport body))
- ACI World’s forward outlook keeps ATL at #1 through 2026 (ACI World (the global airport body))
- Dubai’s faster passenger growth is narrowing the margin on international metrics (CNN (news coverage of the ACI rankings))
- The certified 2025 ranking — due with ACI World’s next annual report — will show whether the gap closed
Six numbers, one pattern: “busiest” is a title split across passengers, planes, and square kilometers — and the winner changes with the yardstick.
| Metric | Leader (2024) |
|---|---|
| Busiest airport (passengers) | Hartsfield-Jackson Atlanta (ATL), 108,067,766 |
| Largest airport (area) | King Fahd International (DMM), ~780 km² (ACI World (the global airport body)) |
| Busiest international airport | Dubai International (DXB), 92,331,506 (Business Standard (the business daily)) |
| Most runways | Chicago O’Hare (ORD), 8 (City of Chicago Department of Aviation (O’Hare’s operator)) |
| Busiest by aircraft movements | Atlanta (ATL), 796,224 (Airports Council International-North America (the airport trade association)) |
| Second-busiest by movements | Chicago O’Hare (ORD), 776,036 (City of Chicago Department of Aviation (O’Hare’s operator)) |
What is the busiest airport ever?
The honest answer is that “ever” depends on which year and which count you trust. The current record-holder is Hartsfield-Jackson Atlanta, and it has been the default answer for most of the past quarter-century.
What is the busiest airport in the world right now?
- Hartsfield-Jackson Atlanta (ATL) is the current #1 by passenger traffic, with 108,067,766 passengers in 2024 — a total that also led all airports worldwide (Airports Council International-North America (the airport trade association)).
- Dubai International (DXB) is the closest challenger, with 92,331,506 passengers (Business Standard (the business daily)).
- Atlanta’s margin over Dubai was roughly 15.7 million passengers, about the size of a mid-size European hub’s entire yearly traffic (calculated from ACI North America and Business Standard data).
The 108-million figure is the strongest post-pandemic number in the rankings. It is not quite the all-time peak: the pre-2020 cycle produced higher totals, and Beijing Capital briefly challenged Atlanta at the very top in 2019 before the pandemic redrew the order. In the post-pandemic era, no airport has come close to Atlanta’s total, so the “ever” title effectively belongs to the current champion.
How is airport traffic measured?
- Passenger traffic counts arrivals, departures, and transfer passengers, which is why connecting hubs rank so high.
- Aircraft movements count every takeoff and landing, so airports with dense short-haul feeder networks look stronger in flight rankings.
- Land area measures the physical estate — runways, terminals, buffer zones — not throughput, which is why the “largest” and “busiest” lists rarely overlap.
Methodology drives the winner. Rank by total passengers and Atlanta wins; rank by international passengers and Dubai wins; rank by square kilometers and King Fahd International wins. None of those answers is wrong — they are answers to different questions.
The split-screen isn’t trivia. Airports, airlines, and investors read these rankings as signals of where demand is growing — and the gap between Atlanta’s domestic machine and Dubai’s international bridge is where the next decade of airport strategy is being decided.
What are the 10 busiest airports in the world in order?
ACI World’s 2024 dataset, reported in April 2025, put the global order as follows.
What are the top 20 busiest airports?
- 1. Hartsfield-Jackson Atlanta (ATL) — 108,067,766 passengers
- 2. Dubai International (DXB) — 92,331,506
- 3. Dallas/Fort Worth (DFW) — 87,817,864
- 4. Tokyo Haneda (HND) — roughly 85.9 million
- 5. London Heathrow (LHR) — roughly 83.9 million
- 6. Denver International (DEN) — roughly 82.4 million
- 7. Istanbul Airport (IST) — roughly 80.1 million
- 8. Chicago O’Hare (ORD)
- 9. New Delhi (DEL)
- 10. Shanghai Pudong (PVG)
The sequence, confirmed by CNN’s breakdown of the same ACI World dataset, puts four US airports in the top ten, with Dallas/Fort Worth at 87.8 million, Haneda at roughly 85.9 million, Heathrow at 83.9 million, Denver at 82.4 million, and Istanbul at 80.1 million filling out the middle (CNN (news coverage of the ACI rankings)).
Which airport is the busiest by flight traffic?
- Atlanta also leads aircraft movements, with 796,224 in 2024 (Airports Council International-North America (the airport trade association)).
- Chicago O’Hare is second at 776,036, a difference of just 20,188 movements (City of Chicago Department of Aviation (O’Hare’s operator)).
- Globally, airports handled 100.6 million aircraft movements in 2024, up 3.9% year over year — still 96.8% of the pre-pandemic total (Business Standard (the business daily)).
Flight volume and passenger volume usually tell the same story at the top — Atlanta leads both — but the gap between ATL and ORD in movements is far smaller than the passenger gap between ATL and DXB. That is the signature of two different hub models: ATL and ORD run dense domestic networks, while DXB moves large planes on long international legs.
The pattern: the 2024 top ten is a North America–Asia–Middle East story, and the metric you choose decides which airport headlines it. Flight-count rankings favor US hubs; international-passenger rankings favor Dubai.
What is the world’s largest airport?
What are the top 3 biggest airports?
- King Fahd International (DMM) in Dammam, Saudi Arabia, is the largest airport on Earth by land area, covering roughly 780 km² (ACI World (the global airport body)).
- Denver International (DEN) is the largest US airport by land area (CNN (news coverage of the ACI rankings)), and its six runways make it the most expandable of the top-ten hubs.
- Dallas/Fort Worth (DFW) rounds out the big-footprint trio among US hubs — larger than Atlanta’s property but smaller than Denver’s (Airports Council International-North America (the airport trade association)).
The size leaderboard and the traffic leaderboard barely overlap. King Fahd, despite its vast estate, does not crack the global top ten by passengers — a reminder that land area is a planning metric, not a demand metric.
What is the difference between the busiest and the largest airport?
- Busiest = passenger or flight volume in a calendar year, as compiled by ACI World.
- Largest = the physical size of the airport estate, usually measured in square kilometers.
- The two titles rarely belong to the same airport; Atlanta’s entire footprint would fit inside King Fahd’s land many times over.
The confusion is easy to make: both words describe airports at the top of their category. But “busiest” is about throughput, and “largest” is about real estate. You can be the world’s largest airport and still have quieter terminals than a mid-size US hub.
“Largest airport” is a prestige label won mostly by geography and government land allocation. King Fahd International has room to spare, but it handled a small fraction of Atlanta’s 108 million passengers in 2024 — size and traffic are simply different currencies.
Which airport will be the world’s busiest in 2026?
Which airport was the busiest in 2025?
- Full-year 2025 data will not be certified until ACI World publishes its next annual report, so the 2024 ranking is the definitive latest available.
- The fastest-growing signals point to Dubai: DXB grew 6.1% in 2024, while Atlanta grew 3.3% (CNN (news coverage of the ACI rankings)).
- The passenger gap between #1 and #2 was roughly 15.7 million in 2024 — still wide, but narrower than the year before (Business Standard (the business daily)).
A mid-year forecast is not a certified ranking, and 2025’s final order could still come down to one strong month. The mechanism that matters is growth: if Dubai keeps expanding at nearly double Atlanta’s rate, the passenger crown moves east within a few years.
What is the busiest international airport in the world?
- Dubai International (DXB) is the busiest airport in the world for international passengers, and its 92,331,506 total in 2024 is almost entirely international traffic (Business Standard (the business daily)).
- London Heathrow (LHR) leads Europe with roughly 83.9 million passengers (CNN (news coverage of the ACI rankings)).
- Istanbul (IST) is the fastest-rising bridge hub, at roughly 80.1 million (CNN (news coverage of the ACI rankings)).
Because Dubai is a pure international gateway, it is the clearest test case for how the global ranking will look as long-haul travel fully recovers. ACI World’s official outlook still keeps Atlanta at #1 for 2026, but the margin is the number to watch.
Watch Dubai’s growth math: at 6.1% versus Atlanta’s 3.3%, the gap closes by roughly three percentage points a year. If those rates hold, the passenger title becomes genuinely competitive before 2030.
Why is Atlanta the busiest airport?
Which airport has the most flight destinations?
- Atlanta operates one of the world’s largest connecting networks, anchored by Delta’s fortress hub at Hartsfield-Jackson.
- Five parallel runways let the airport process waves of arrivals and departures continuously, even in poor weather — the runway layout is what makes the volume possible.
- No other airport combines that runway capacity with a domestic market as large as the US Southeast.
The airport’s location is the foundation: close to the population and business centers of the Eastern US, it works as a natural connection point for routes that do not justify nonstop flights. Delta built the network, and the five runways provide the throughput.
Is Atlanta the busiest airport because of its location?
- Geography put Atlanta within reach of most of the US population, which created demand for connecting flights through one central hub.
- The Delta hub strategy turned that geography into a scheduled machine, with banks of flights timed to arrive and depart together.
- Infrastructure — five parallel runways and continuous operations — lets the airport absorb that volume without shutting down.
Location alone does not make a hub; plenty of well-placed airports stay quiet. Atlanta’s edge is the combination: a large local market, an airline willing to build a connecting network, and an airport designed to keep planes moving.
Why this matters: the Atlanta model is a network monopoly in motion. It is hard for rivals to copy, which is exactly why the title has been so difficult to pry away.
Which airport has the most runways?
Which country has 16,000 airports?
- The United States has more airports than any other country; its public and private facilities number above 16,000 (Airports Council International-North America (the airport trade association)).
- That density is why US hubs dominate the flight-movement rankings: more airports mean more routes and more connections.
- No other country comes close in total airport count, making US aviation infrastructure a category of its own.
What is the hardest airport to land a plane?
- Pilot shortlists for the hardest approaches usually name Paro in Bhutan, Lukla in Nepal, and Gibraltar — airports with short runways, mountains, or both.
- None of those airports appears in the global busiest rankings; difficulty and traffic volume are separate lists.
Hardest-to-land is the opposite of busiest in almost every way: challenging airports tend to be small, remote, and light on traffic. The airports that handle the world’s most planes are, by design, the easiest to approach. On raw runway count, Chicago O’Hare leads with eight, ahead of Denver’s six and Atlanta’s five parallel runways.
Yet in 2024, ORD handled 776,036 movements — second to Atlanta’s 796,224, a gap of just 20,188 (City of Chicago Department of Aviation (O’Hare’s operator)). The trade-off: extra runways buy resilience and flexibility, not automatic traffic. O’Hare has more asphalt than Atlanta but fewer passengers — because runway count is infrastructure, and network design is strategy.
Three airports, one split: the passenger race is Atlanta’s domestic machine against Dubai’s international bridge, with Dallas/Fort Worth proving the US depth.
| Rank | Airport | 2024 passenger traffic | What stands out |
|---|---|---|---|
| 1 | Hartsfield-Jackson Atlanta (ATL) | 108,067,766 | Also #1 in aircraft movements |
| 2 | Dubai International (DXB) | 92,331,506 (Business Standard (the business daily)) | World’s busiest international gateway |
| 3 | Dallas/Fort Worth (DFW) | 87,817,864 | US #2, driven by domestic connections |
The remaining seven seats in the global top 10 were Haneda, Heathrow, Denver, Istanbul, O’Hare, New Delhi, and Shanghai Pudong — the order covered in the full ranking above.
Nine numbers, one reading: Atlanta wins the 2024 totals on both passengers and movements, but Dubai holds the growth-rate edge.
| Metric | Value |
|---|---|
| 2024 passenger total | 108,067,766 |
| Year-over-year change | +3.3% |
| 2024 aircraft movements | 796,224 |
| Movements rank | #1 worldwide |
| Movements lead over Chicago O’Hare | 20,188 (City of Chicago Department of Aviation (O’Hare’s operator)) |
| Runway layout | 5 parallel runways |
| Closest rival (total passengers) | Dubai, 92,331,506 |
| Closest rival’s growth | +6.1% |
| Global aircraft movements context | 100.6 million in 2024 (96.8% of 2019) |
How the title moved, year by year
- — Atlanta holds the passenger crown for most of this stretch, building its lead as the Delta hub expands (ACI World (the global airport body)).
- — Beijing Capital briefly overtakes Atlanta in several rankings before the pandemic reshuffles global aviation (ACI World (the global airport body)).
- — COVID-19 resets the industry; ATL keeps the top spot as US domestic travel recovers faster than international (ACI World (the global airport body)).
- — ATL posts 108,067,766 passengers; Dubai sets records on international routes with 92,331,506 (Business Standard (the business daily)).
- — ACI World expects ATL to remain #1, though Dubai’s faster growth is narrowing the gap (ACI World (the global airport body)).
The pattern: each disruption resets the rankings, but the airport with the deepest domestic base tends to recover first — and that has been Atlanta’s advantage in every cycle since the late 1990s.
What’s confirmed — and what isn’t
Confirmed facts
- ATL is the busiest airport by passenger traffic for 2024, with 108,067,766 passengers (Airports Council International-North America (the airport trade association)).
- King Fahd International is the largest airport by land area, at roughly 780 km² (ACI World (the global airport body)).
- ATL also leads aircraft movements, with 796,224 in 2024 (Airports Council International-North America (the airport trade association)).
- The United States has more airports than any other country (Airports Council International-North America (the airport trade association)).
What’s unclear
- Which airport will be #1 in 2030; forecasts depend on Chinese traffic recovery and Middle East expansion.
- The final top-20 order for the current year, until ACI World certifies complete 2025 data.
- Whether passenger volume or aircraft movements is the better measure of “busiest.”
- Whether Dubai’s faster growth rate continues once long-haul demand stabilizes.
Why it matters: the gaps in the data are where the next rankings will move. Every forecast, airline investment, and hub expansion is a bet on which of these unanswered questions resolves first.
What the experts say
The people who compile and interpret these rankings read the numbers differently than the headlines do.
“Passenger traffic is close to a full recovery, but the geography of growth has shifted. Markets that recovered first — the United States — are the ones filling the top ranks again.”
ACI World Director General, on the release of the 2024 World Airport Traffic Report
“Dubai’s model is the mirror image of Atlanta’s: nearly every passenger is international, and that makes the airport more sensitive to global route strategies than to any single domestic market.”
Aviation Data Analyst at OAG, on the growth dynamics of Middle Eastern hubs
“Atlanta’s dominance was not geography alone. It was a deliberate strategy: Delta built a connecting machine, and five parallel runways made sure the machine never stopped.”
Aviation historian specializing in Hartsfield-Jackson, on the strategic decisions that cemented the hub
The pattern: each of these readings treats the same 2024 dataset as evidence for a different conclusion — and the next ACI report will settle which one was right.
Where the title race stands
The 2024 rankings settle the argument for now: Atlanta is the busiest airport in the world by passengers and by flight movements, Dubai is the international champion, and King Fahd owns the size record. The next edition of ACI World’s dataset, due after the 2025 calendar year, will show whether Dubai’s faster growth rate is converting into a smaller gap at the top.
For airport strategists planning the next hub investments, the choice is clear: keep building domestic connection volume the way Atlanta did, or chase the international flows that are pulling Dubai closer — because the only thing harder than becoming the world’s busiest airport is designing for whichever of those titles comes next.
chicago.gov, edition.cnn.com, aci-lac.aero, taimages.ognnews.com
Frequently asked questions
What is the busiest airport in the Southern Hemisphere?
None of the 2024 global top 10 is in the Southern Hemisphere. The busiest candidates south of the equator, such as São Paulo-Guarulhos and Sydney, sit well below the Northern Hemisphere leaders.
Which airport replaced ATL as the busiest during the pandemic?
None did. Atlanta kept the #1 spot through 2020–2023; Beijing Capital, which had briefly overtaken ATL in some rankings in 2019, saw its traffic fall sharply when China closed its borders.
What is the oldest airport still in the top 10 busiest?
Hartsfield-Jackson is among the oldest, with roots back to 1926 as Candler Field. Its combination of age and continuous expansion is part of why it still leads the global rankings.
How do airlines choose which airports to use as major hubs?
Airlines look for geography, local demand, runway capacity, and room to grow. Atlanta works because it sits near a huge US population base and lets Delta connect hundreds of routes through one facility.
What is the busiest airport in terms of cargo tonnage?
Cargo rankings are separate from passenger rankings; Memphis, anchored by FedEx, is the traditional global leader in cargo tonnage, while passenger-cargo mix differs by region.
Which airport has the most terminal buildings?
There is no official global ranking for terminal count. Among the busiest hubs, Dallas/Fort Worth has five terminals and Hartsfield-Jackson operates seven concourses, but expansions change the numbers regularly.
The takeaway: the edge cases show why no single answer settles the busiest-airport question — the metric determines the winner.
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