A new study has exposed the American airports secretly working against travelers, and the findings are going to change how you book your connections.
Anyone who has sprinted through a terminal, shoes in hand, heart rate spiking, knows that not all airports are created equal. Some are compact and forgiving.
Others are practically small cities, and a new study from Upgraded Points has done the work of figuring out exactly which ones demand the most time, the most stamina, and the most buffer built into an itinerary before things go wrong.
Houston, You Have a Problem
At the top of the list sits George Bush Intercontinental Airport in Houston, Texas, where passengers need a minimum of two hours and 17 minutes just to get between gates and terminals.
That is not the full journey from curb to seat. That is gate to gate, and it still takes that long.
IAH operates across five terminals connected post-security by a Skyway tram. Before clearing security, travelers can move between terminals via a below-ground subway train, though the existence of that infrastructure says everything about the scale of the place.
Last year, 48 million passengers moved through the airport, which serves as a major United Airlines hub.
Amenities if you have time to spare: For travelers lucky enough to have breathing room, IAH offers lounges from Air France, American Airlines, KLM, United, and an American Express Centurion Lounge.
The Rest of the List
Dallas Fort Worth International Airport comes in a close second, requiring at least two hours and 16 minutes between flights.
DFW is one of the largest airports in the world by land area, so the number is not surprising, but it is a useful reminder to stop booking those tight connections out of Texas.
New York’s John F. Kennedy International Airport lands in third place, where travelers should plan for a minimum layover of two hours and two minutes.
JFK has long been notorious for its sprawling layout, aging infrastructure in certain terminals, and the logistical headache of moving between international and domestic flights.
Hartsfield-Jackson Atlanta International Airport, the world’s busiest airport by passenger volume, comes in fourth with a recommended minimum connection time of one hour and 57 minutes.
The airport’s linear design, stretching across multiple concourses connected by an underground train, means that even with transit, the distances add up fast.
Denver International Airport rounds out the top five at one hour and 56 minutes. DEN is already famous for its remote location on the edge of the city, and its single massive terminal with three concourses means a lot of walking once travelers are inside.
How the Study Worked
Upgraded Points analyzed 25 of the most connected airports in the United States, looking at airport size, number of gates, walking time between gates, departure reliability, passenger volume, and the availability of restaurants, shops, and lounges.
The takeaway is straightforward. As the report put it, at some airports a connection can happen without much drama, while at others long walks, large terminals, and heavy passenger traffic can turn a standard layover into a near miss.
Airport design, it turns out, shapes the entire travel experience in ways that rarely show up on a booking page.
The lesson: when building out an itinerary, these five airports are not the place to gamble on a 45-minute connection.