Travel data platform OAG has released its Megahubs 2025 report, ranking the world’s most connected airports. The report — based on destinations and scheduled connections during the industry’s busiest day between September 2024 and August 2025 — ranked both Chicago O’Hare International Airport (ORD) and Atlanta Hartsfield-Jackson International Airport (ATL) in its top ten most connected hubs. ORD, which experienced a 17% growth in connections and added 15 new destinations, climbed from ninth to seventh place in the global rankings, while ATL, which added eight new destinations and experienced a 14% increase in potential connections, rose from 11th to eighth place.
“Chicago O’Hare and Atlanta Hartsfield-Jackson continue to play a vital role in connecting travelers across North America and the world,” said John Grant, chief analyst at OAG. “Their ability to expand destinations and connections underscores their importance in shaping the region’s aviation network.”
OAG’s domestic rankings placed ORD as first, with ATL claiming second place and Dallas Fort Worth International Airport (DFW); Denver International Airport (DEN); Charlotte Douglas International Airport (CLT); Seattle-Tacoma International Airport (SEA); Boston Logan International Airport (BOS); Detroit Metropolitan Wayne County Airport (DTW); George Bush Intercontinental Airport (IAH); and Los Angeles International Airport (LAX) respectively filling out the rest of the top ten.
