Infrastructure & Global Trade
Airports Don’t Just Make Money From Airplanes Full Research Note
The modern airport is a transport system, commercial property portfolio and freight node at the same time. The runway creates the flow; the business is what gets built around it.
In 2025, airports handled 9.8 billion passengers. Yet passenger rankings tell only part of the story. To understand what airports are worth — to operators, airlines, retailers and the cities around them — you have to follow the money, the cargo and the connections.
Source note. This edition has been checked against current primary airport data, company reporting and peer-reviewed research. Figures use the reporting period stated beside them; economic-impact estimates are kept separate from causal findings.
01 — The CrowdThree Ways to Measure “Busiest”
Airports Council International’s 2026 World Airport Traffic Dataset covers 2,817 airports across more than 180 countries and territories. It puts global passenger traffic at 9.8 billion in 2025, up 3.7% from 2024 and 6.5% above 2019.1
Atlanta remained the world’s busiest passenger airport with 106.3 million travellers, followed by Dubai at 95.2 million and Tokyo Haneda at 91.7 million. But “busiest” changes as soon as the unit changes. Chicago O’Hare led aircraft movements with 857,392 take-offs and landings. Hong Kong led cargo with 5.07 million tonnes, ahead of Shanghai Pudong and Anchorage.1
Three ways to measure “busiest” — three different leaders
That matters because airports are not interchangeable assets. Atlanta is a giant passenger-connecting hub. Dubai is a long-haul international superconnector. Hong Kong is a global cargo gateway. The more useful question is not simply which airport is largest, but what flow each airport is designed to organise and monetise.
02 — The Commercial LayerThe Runway Is Only Part of the Business
Airport economics starts with a useful distinction. Aeronautical revenue comes from activities tied directly to flying — landing charges, passenger fees, terminal rents, aircraft parking and related services. Non-aeronautical revenue comes from parking, ground transport, rental cars, shops, restaurants, property, advertising and other commercial activities.
In the United States, ACI-NA’s 2025 concessions benchmarking presentation shows FY2023 airport revenue split at roughly 54% aeronautical and 46% non-aeronautical.2 Globally, ACI estimates non-aeronautical revenue reached about US$73 billion in 2024.3 These numbers are large enough to matter to pricing, investment and resilience, but they do not mean that “airplanes do not make money.” Aviation still creates the traffic on which most commercial income depends.
Inside the U.S. non-aeronautical revenue pool
The composition is revealing. Parking and ground transportation produced US$6.0 billion, or 46% of U.S. non-aeronautical airport revenue in FY2023. Rental cars contributed 18%. Retail and duty-free were 6%; food and beverage 7%.2 In other words, the commercial story is broader than duty-free.
It is also more behavioural than it first appears. Wu, Morlotti and Mantin (2024), analysing 89 U.S. airports, found that a 10% increase in passenger dwell time was associated with about a 5% increase in total non-aeronautical revenue. The estimated effect was 8% for food and beverage and 6% for retail, and it varied with terminal design.4 That turns something as ordinary as waiting time into a commercial variable.
Airport operators measure this closely. Groupe ADP reported Extime Paris sales of €32.10 per departing passenger in 2024; its definition covers a specified set of airside commercial activities rather than an undefined global “travel-retail market.”5 Graham’s earlier academic work helps explain why this matters: commercial revenue became strategically more important as airports were corporatised, privatised and pushed to behave more like businesses than administrative infrastructure providers.6
The runway creates the audience. The terminal, the car park and the property portfolio decide how much that audience is worth.
03 — The Case StudiesSix Airports, Six Business Models
The danger in talking about “the airport business” is assuming that every hub earns money in the same way. It does not. These six examples are more useful as business models than as a revenue ranking, because their ownership structures and reporting scopes are not directly comparable.
Atlanta is the clearest passenger-hub archetype: enormous connecting volumes, a dominant home carrier in Delta, and a municipal ownership model. Its scale is impressive, but it also shows why passenger count alone says little about commercial mix or ownership economics.1
It is the reference case for the hub-and-spoke passenger machine — and for the benefits and concentration risk that come with a dominant airline.
Dubai’s model is built around international connectivity and a tightly linked aviation ecosystem. The US$37.3 billion and 631,000-job figures often attached to DXB actually refer to the wider Dubai aviation sector — Emirates Group, Dubai Airports, other aviation entities and aviation-facilitated tourism — rather than the airport alone.7
It shows what happens when aviation, tourism, logistics and national development strategy are designed to reinforce one another.
Heathrow combines scarcity, regulation and a large international passenger base. Its aeronautical charges are economically regulated, so commercial revenue and operating efficiency matter alongside traffic. Its ownership also changed: Ferrovial exited its remaining stake in 2025, and Ardian now leads the consortium with 32.61%.8
It is a useful case for understanding how regulation can shape the balance between airline-facing and passenger-facing revenue.
Groupe ADP illustrates why “top airports by revenue” tables can be misleading. The group consolidates businesses and airport interests beyond Charles de Gaulle, so its €6.70 billion of 2025 revenue is not comparable with a single-airport entity on a like-for-like basis.9
It is the clearest reminder to compare business structures before comparing headline revenue.
Memphis remains one of the world’s major freight hubs, but 2025 also provided a useful warning about customer concentration. Cargo fell 20.9% and Memphis slipped to sixth in ACI’s ranking after FedEx lost the U.S. Postal Service air-cargo contract in late 2024.1
A freight hub can be globally important and still be exposed to the fortunes of one anchor logistics customer.
Changi’s 2025 passenger traffic reached a record 69.98 million. Its importance as a business case is less about one retail metric than about the deliberate blending of airport and destination: Jewel, gardens, entertainment and a tightly managed transfer experience all encourage passengers to spend time rather than simply pass through.10
It shows how passenger experience can be treated as infrastructure rather than decoration.
04 — The Cargo StoryThe High-Value Economy Travels Differently
Air cargo accounts for less than 1% of world trade by weight but roughly 33% by value.11 That imbalance is not a curiosity; it is the business model. Air freight is expensive, so it tends to carry goods for which speed, inventory risk or value density justify the cost.
IATA’s 2025 trade analysis is a good example. In the first quarter, U.S. imports were US$193 billion higher than a year earlier as companies accelerated shipments ahead of tariff changes. IATA reports that the increase in imports carried by air totalled US$157 billion — about 82% of the overall increase — while the value of imports by air itself rose 81% year on year.12
AI-related goods punch far above their weight in air cargo
AI-related goods accounted for 53.5% of the value of air-transported trade in that sample but only 7% of its volume. IATA also reports that data-storage units travelled by air 68% of the time and servers 56%, while memory chips were shipped almost exclusively by air.12
This is why cargo rankings look so different from passenger rankings. In 2025, Hong Kong, Shanghai Pudong, Anchorage, Louisville and Miami formed the top five by cargo tonnage; Memphis, once a perennial top-three hub, slipped to sixth.1 For semiconductor, pharmaceutical, electronics and e-commerce supply chains, airport capacity is part of the production system.
05 — The Regional EconomyWhat Connectivity Can Buy — and What It Cannot Prove
Airport impact studies often produce very large numbers, and they are useful when read for what they are: estimates of an economic footprint. The FAA estimates that U.S. civil aviation supported US$1.8 trillion in economic activity, 9.4 million jobs and 4.0% of U.S. GDP using 2022 data.13
For Europe, SEO Amsterdam Economics estimates a 2019 gross airport-related impact of €121 billion in direct GDP, €89 billion indirect, €121 billion induced and €174 billion from tourism enabled by aviation — about €505 billion in total across those four layers.14
Four layers of European airport-related economic impact
The harder question is causality: does connectivity make a region richer, or do richer regions simply demand more flights? The same SEO study estimates that a 10% increase in direct air connectivity is associated in its model with roughly a 0.5% increase in GDP and a 1.6% increase in employment.14 That is evidence of a relationship, not a universal multiplier for every proposed route.
A more targeted Italian study by Bannò and Redondi used a comparison-group design around the introduction of new international routes. Inward foreign direct investment in the connected areas rose 33.7% over the two years after route openings, while FDI in the comparison areas fell 16.6%.15 The design strengthens the case for an effect, but it still does not make every new route equally valuable.
The best interpretation is therefore measured: connectivity can reduce economic distance, improve access to customers and suppliers, and make a place more attractive for investment. But route quality, destination mix, local industry and existing transport links determine how much of that potential is realised.
06 — The AerotropolisThe Airport Beyond the Fence
John Kasarda helped popularise the modern aerotropolis idea: airport-centred districts where logistics parks, warehouses, offices, hotels, manufacturing and services cluster around fast global access.16 The idea is useful as a lens, even if real cities rarely grow as neatly as the model suggests.
The underlying mechanism is easier to accept than the branding. Airports control or influence scarce, well-connected land. Cargo operators want to be close to the apron; hotels want to be close to passengers; time-sensitive manufacturers value fast customs and freight access. Over time, that can turn an airport boundary into an economic district rather than a simple transport perimeter.
07 — The FragilityWhere the Model Gets Vulnerable
Concentration. The network benefits of large hubs come with operational risk. ACI says the top 20 cargo airports alone handled nearly 41% of global air cargo in 2025.1 Disruption at a small number of nodes can therefore spread quickly.
Customer dependence. Memphis’s 2025 cargo decline is a reminder that a hub built around one anchor carrier or contract can be exposed when that relationship changes.
Regulation. Large airports may look like commercial property businesses, but aeronautical charges are often regulated. Heathrow is a useful example: traffic, commercial revenue and regulated pricing all have to be read together.8
External costs. Noise, congestion, land use and climate effects are part of the airport-development equation. Economic benefits are real, but they are not costless; credible analysis should keep both sides visible.
The Runway Is Only the Beginning
The most useful way to think about an airport is not as a mall with runways, and not simply as transport infrastructure. It is a multi-sided platform built around movement. Airlines bring passengers. Cargo operators bring high-value goods. Those flows create demand for parking, shops, restaurants, property and logistics — and, at the regional level, for connectivity itself.
That framing also explains why rankings can mislead. The busiest passenger airport, the busiest cargo airport and the highest-revenue airport operator are measuring different things. The better question is the one underneath them all: what kind of value is this airport built to create, and who captures it?
Sources
References
Extended Research Note · Issue 05. Figures are original redraws from the cited datasets. Bibliography entries follow APA-style formatting; numeric endnote markers are retained for web readability.
- 1. Airports Council International World. (2026, July 15). World’s busiest airports: Atlanta holds, Asia climbs. ACI World.
- 2. Airports Council International–North America. (2025). 2025 ACI-NA concessions benchmarking survey for CY 2024. ACI-NA. Revenue mix shown is FY2023; FY2024 data in the presentation were incomplete.
- 3. Airports Council International World. (2026). Airport non-aeronautical revenues: From traffic recovery to value reinvention. ACI World Insights.
- 4. Wu, Y., Morlotti, C., & Mantin, B. (2024). Shopping or dining? On passenger dwell time and non-aeronautical revenues. Journal of Air Transport Management, 118, 102620. https://doi.org/10.1016/j.jairtraman.2024.102620
- 5. Groupe ADP. (2025, February 19). 2024 full-year results: Solid annual results and 2024 targets met. Groupe ADP.
- 6. Graham, A. (2009). How important are commercial revenues to today’s airports? Journal of Air Transport Management, 15(3), 106–111. https://doi.org/10.1016/j.jairtraman.2008.11.004
- 7. Dubai Airports. (2024, October 24). Aviation’s substantial contribution to Dubai’s economy revealed in latest report. Dubai Airports.
- 8. Heathrow Airport Limited. (2026). Annual report 2025. Heathrow. See also About Heathrow for current ownership.
- 9. Groupe ADP. (2026). 2025 full-year results. Groupe ADP.
- 10. Changi Airport Group. (2026, January 22). Changi Airport handled record traffic of close to 70 million passengers in 2025. Changi Airport Group.
- 11. International Air Transport Association. (n.d.). The value of air cargo. IATA.
- 12. International Air Transport Association. (2026, March 10). Air cargo enabled $157 billion in frontloaded trade and supported AI growth in 2025. IATA.
- 13. Federal Aviation Administration. (2024). The economic impact of U.S. civil aviation 2024. FAA.
- 14. Adler, M., Petrat, A., Jongeling, A., Kieffer, M., de Jong, G., Behrens, C., & Lieshout, R. (2024). The economic and social impact of European airports and air connectivity. SEO Amsterdam Economics / ACI Europe. Report.
- 15. Bannò, M., & Redondi, R. (2014). Air connectivity and foreign direct investments: Economic effects of the introduction of new routes. European Transport Research Review, 6, 355–363. https://doi.org/10.1007/s12544-014-0136-2
- 16. Kasarda, J. D., & Lindsay, G. (2011). Aerotropolis: The way we’ll live next. Farrar, Straus and Giroux.
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