Summary While Istanbul Airport (IST) had the most diverse network of destinations, four US airports made the list. This includes Chicago O'Hare International Airport (ORD), Dallas/Fort Worth International Airport (DFW), Atlanta Hartsfield-Jackson International Airport (ATL), and Denver International Airport (DEN). Other airports were in Asia, Europe, and the Middle East.

The aviation analytics company Cirium has issued its latest report on the most connected airports , outlining the top 20 airports in terms of destinations served. The list included four United States airports, which had more than 200 direct flights to various destinations domestically and internationally. Istanbul Airport (IST) leading the way Istanbul Airport (IST) was the best-connected airport in H1 2024, with the airport serving 309 destinations across the world.

That was largely due to Turkish Airlines developing a very elaborate hub strategy, with the carrier leveraging IST's geographical position to cater to travelers flying between multiple continents. Cirium data showed that in August, out of the 4,918 total departures out of the airport, Turkish Airlines was responsible for 3,825 weekly flights, or 77.7%.

The second airport was Germany’s main gateway, Frankfurt Airport (FRA). One of the major hubs of Lufthansa – the group and the airline – had 296 unique destinations during the first half of the year. In comparison, Munich Airport (MUC), which was ranked 15th, had 217 destinations on its depar.