Dubai remained the undisputed king of international air travel in 2024, handling more than 92 million passengers crossing borders — roughly 11 million more than the runner-up.
Quick answer: 1. Dubai International Airport (DXB), 2. London Heathrow Airport (LHR), 3. Istanbul Airport (IST), 4. Amsterdam Schiphol Airport (AMS), 5. Singapore Changi Airport (SIN), 6. Incheon International Airport (ICN), 7. Paris Charles de Gaulle Airport (CDG), 8. Frankfurt Airport (FRA), 9. Doha Hamad International Airport (DOH), 10. Madrid Barajas Airport (MAD).
While overall passenger rankings tend to be dominated by US domestic mega-hubs, the international-only picture tells a different story. This list ranks the world's ten busiest airports by international passenger traffic in 2024, drawing on the Airports Council International (ACI) final World Airport Traffic Dataset. The international lane is driven by connecting hubs — Dubai, London Heathrow, Singapore, Istanbul — where a large share of passengers aren't starting or ending their journey at the hub city, but transiting between continents. It's a ranking that rewards geography, airline partnerships, and the ability to move people between everything from narrowbody regional jets to A380 ultralong-haul flights.
Dubai retained its crown as the world's busiest international airport by a wide margin, handling over 92 million international passengers. Emirates' super-connecting hub between Europe, Asia, Africa and the Americas drives virtually all of its volume as international traffic.
Heathrow is Europe's busiest international gateway, handling over 81 million international passengers across its four terminals on just two runways. It serves the most countries of any airport in the world.
Istanbul Airport has rapidly grown into one of the world's great connecting hubs, handling over 79 million international passengers. Turkish Airlines' vast network — serving more countries than any other airline — funnels traffic through its single-terminal megahub.
Schiphol handled over 68 million international passengers in 2024, rebounding from pandemic-era caps. KLM's hub is a key European connecting point between North America, Asia and the rest of Europe.
Changi is Southeast Asia's premier international hub, handling over 67 million international passengers. Its network of connections across Asia, Australia and Europe, along with its status as a premium travel experience, keep it among the world's top international airports.
Incheon is the primary gateway to South Korea and a major Northeast Asian connecting hub, serving over 62 million international passengers. Korean Air and Asiana's networks connect North America, Europe and the rest of Asia through this modern airport west of Seoul.
CDG is France's main international gateway and Air France-KLM's largest hub, handling nearly 57 million international passengers. It offers extensive connections across Europe, Africa, North America and Asia.
Frankfurt is Germany's busiest airport and Lufthansa's primary global hub, carrying over 56 million international passengers. Its central European location makes it a key connecting point between continents.
Hamad International is Qatar Airways' home hub and has grown rapidly, handling over 55 million international passengers. Its geographic position and Qatar Airways' expanding network have made it a major competitor to Dubai and Abu Dhabi.
Madrid completes the top ten, serving nearly 50 million international passengers. Iberia's hub is the main gateway between Europe and Latin America, carrying more traffic to that region than any other European airport.
| # | Name | Country | IATA code | Change vs 2023 |
|---|---|---|---|---|
| 1 | Dubai International Airport (DXB) | United Arab Emirates | DXB | +6.1% |
| 2 | London Heathrow Airport (LHR) | United Kingdom | LHR | +5.9% |
| 3 | Istanbul Airport (IST) | Turkey | IST | +5.3% |
| 4 | Amsterdam Schiphol Airport (AMS) | Netherlands | AMS | +7.8% |
| 5 | Singapore Changi Airport (SIN) | Singapore | SIN | +14.3% |
| 6 | Incheon International Airport (ICN) | South Korea | ICN | +10.7% |
| 7 | Paris Charles de Gaulle Airport (CDG) | France | CDG | +4.2% |
| 8 | Frankfurt Airport (FRA) | Germany | FRA | +5.1% |
| 9 | Doha Hamad International Airport (DOH) | Qatar | DOH | +15.1% |
| 10 | Madrid Barajas Airport (MAD) | Spain | MAD | +9.5% |
Airports are ranked by international passenger traffic in calendar year 2024, as reported in the Airports Council International (ACI) final World Airport Traffic Dataset. ACI defines international passengers as those travelling between two different countries, including both direct arrivals and departures. Transit passengers are counted once. Rank 1 is the airport with the highest international passenger count. Figures are cross-checked against London Heathrow's own reported 2024 results (the airline's annual filings), CNN Travel's reporting on ACI data, and Reuters coverage of the rankings.
Dubai International Airport (DXB) was the world's busiest airport for international traffic in 2024, handling approximately 92.3 million international passengers according to ACI's final World Airport Traffic Dataset — nearly 11 million ahead of second-place London Heathrow.
ACI defines international passengers as those travelling between two different countries. Both departing and arriving international passengers are counted, and direct-transit passengers are counted once. Domestic passengers travelling within the same country are excluded from this ranking.
The overall busiest airports list includes domestic travel, which is why US airports like Atlanta (ATL) and Dallas-Fort Worth (DFW) top that ranking — they handle enormous volumes of domestic connecting traffic. The international-only list tilts toward long-haul connecting hubs like Dubai, Heathrow and Istanbul, where a much higher share of passengers cross borders.
Doha Hamad International (DOH) had the strongest growth among the top ten, with international passenger traffic rising 15.1% year-over-year. Singapore Changi was close behind at 14.3%, reflecting the continued rebound in Asian air travel.