They’re not always ones you might expect. On the top ten list you won’t find Boston’s Logan, New York’s Newark, San Francisco’s SFO, or Seattle-Tacoma, for instance. Globally, Paris, Amsterdam, Seoul, and Beijing miss the list.
For this Tendrils, we’ll look closest at the USA. I started out basing the measure by what the industry calls scheduled seats but have switched to passenger volume, not that I know the difference other than it alters the ranking slightly, notably with Chicago dropping from No. 2 to No. 8. Do note these rankings can be confusing, and may shift around a bit if we look closer.
Should you be curious, English is the international language of aviation when it comes to pilots’ and air traffic controllers’ communicating. In contrast, French takes too long to convey essential information.
That says, here goes, however tentatively.
- Hartsfield–Jackson Atlanta: ATL is king of the skies, both as the busiest airport in the U.S. — and the world. Its dominance arises in being Delta Air Lines’ largest hub, making it the primary gateway to nearly every U.S. city, but especially Florida and the South. Despite having relatively limited international traffic, its massive domestic network keeps it soaring.
- Dallas/Fort Worth: DFW’s sheer size – at 26,8 square miles, larger than Manhattan, and set midway between the two cities – allows its domestic connectivity, a result of being home to American Airlines, to support the cliché claim that everything’s bigger in Texas, boosted in part by the state’s population boom and heavy air freight action. DFW winds up as the eighth busiest airport internationally, too. Measured by aircraft movements, DFW ranks as the third-busiest airport in the world; by passenger traffic, it’s the world’s second-busiest. As I was saying about those definitions?
- Denver International: DEN is built on a 53-square-mile campus, giving it more room to grow than any other airport in the U.S. It does have a 16,000-foot runway, the longest public use one in America, is the biggest hub for Frontier and Southwest airlines, and has 27 airlines providing nonstop service to 230 destinations throughout the Americas, Europe, and Asia, making it the sixth busiest internationally. Ride ‘em, cowboy?
- Chicago O’Hare: Traditionally the nation’s second-busiest airport, ORD has been eclipsed by Dallas and Denver. Located 17 miles from the Windy City’s downtown, ORD’s strategic location in the Midwest still makes it one of the busiest transit points in North America, driven by United Airlines and American Airlines hubs. Last July 20, it set an all-time record for daily Transportation Security Administration screenings, 115,962 passengers. That was part of the busiest month ever for U.S. air travel, when TSA agents screened 85 million passengers. Globally, ORD ranks eighth
- Los Angeles: LAX remains the top West Coast gateway, especially with heavy traffic from Asia. Internationally, it’s 11th. The airport is getting a massive facelift in preparation for the city’s upcoming 2028 Olympics.
- John F. Kennedy: With its international long-haul flights, especially across the Atlantic, driving growth, New York’s JFK also ranks 19th The crown jewel of a historic massive redevelopment is a public-private partnership is the new Terminal 6 with JetBlue and Vantage, with the first gates expected this year and full completion in 2028.
- Charlotte Douglas: Bet this one flew under your radar, but CLT is a crucial hub for American Airlines. Major expansion includes a $1 billion Fourth Parallel Runway scheduled to open in 2027. Repeated, this North Carolina operation has earned recognition as North America’s most financially efficient airport.
- Harry Reid: Las Vegas continues to shine as a leisure travel powerhouse, but there’s more to the metropolis than gambling and conventions. The fact that LAS is a central airline connection to much of the Southwest was the reason I placed Cassia in my novel What’s Left there during her years as a financial field representative. Globally, the airport ranks 24th.
- Orlando: Taking over from McCoy Air Force Base after its closure in 1975, MCO does much more than welcoming tourists to Walt Disney World. Its location between sunny coasts has made it a hub for a cluster of flights serving Florida. MCO ranks 25th Welcome to the sunshine, you snowbirds.
- Miami-Dade: As the busiest gateway to Central and South America and the Caribbean, MIA conveys major cargo traffic in addition to international travelers. For American Airlines, it’s the third-busiest hub. Globally, MIA comes in 27th.
As for those world rankings, Dubai International comes in third. Not surprising, since the modern city was premised on the international airport’s luxury terminals, duty-free shopping, and emerging strategic global connector. Tokyo Haneda ranks fourth. London’s Heathrow, fifth. Istanbul comes in seventh. Indira Gandhi, ninth. And China’s Shanghai Pudong International Airport, tenth.








