Chicago’s O’Hare International Airport is back on top of the heap, reclaiming the title of the nation’s busiest airport in 2025 with 857,392 takeoffs and landings, according to preliminary federal counts. The huge tally nudged Chicago ahead of Hartsfield‑Jackson Atlanta after years of Atlanta dominance, and it is the first time O’Hare has worn the crown since 2019. City officials are happily pointing to the numbers as proof that travel demand is climbing and that O’Hare’s growing capacity is ready for an even bigger 2026.
The Chicago Sun-Times reported that the figures come from preliminary data released by the Federal Aviation Administration, noting that O’Hare handled 857,392 aircraft operations in 2025 and that Mayor Brandon Johnson’s office formally announced the changing of the guard on Tuesday.
Midyear surge and the summer peak
O’Hare’s comeback run was not exactly subtle. By midyear, the airport had already handled roughly 407,000 takeoffs and landings in the first half of 2025, putting it on a pace that edged past Atlanta, according to local reporting. Along the way, Transportation Security Administration checkpoints at O’Hare logged several single day passenger screening records as summer travel kicked into high gear.
July, in particular, was a barnburner, with some of O’Hare’s busiest days on record as airlines bulked up flight schedules for vacation season. Both WBEZ and the Daily Herald reported on the midyear surge that temporarily pushed O’Hare ahead of Atlanta and raised the question of whether the lead would hold through the rest of the year.
Capacity, construction and airline schedules
Airport leaders are quick to credit bricks and mortar as much as boarding passes. They point to new gates and ongoing terminal work that have expanded O’Hare’s capacity and smoothed some of its notorious congestion. The city and the airport authority moved forward this year on Concourse D and other ORDnext projects that add gates and modernize terminals.
Choose Chicago and official planning materials describe the Concourse D groundbreaking and related improvements that operators say have started to relieve pressure on the aging Terminals 2 and 3, giving airlines a little more breathing room to grow schedules.
City Hall reaction
City Hall, unsurprisingly, is treating the ranking like a civic victory lap. “This is more than a statistic, it’s a statement about Chicago’s momentum,” Mayor Brandon Johnson said in a statement highlighted by the Chicago Sun-Times, calling the milestone a sign that the city is “open for business, open to the world.” His office framed O’Hare’s new status as a tangible sign that travelers and airlines are betting on Chicago again.
What to watch next
Before anyone chisel’s O’Hare’s name into the trophy, a few caveats. FAA counts are still preliminary, and there is more than one way to crown a “busiest” airport. Depending on whether you focus on total operations, passenger boardings or scheduled seats, the rankings can shuffle around.
Industry watchers will be waiting on final FAA numbers and other aviation datasets to see how firmly O’Hare holds the top slot. Data from OAG, reported by Time Out, show that O’Hare also led U.S. domestic connectivity measures in 2025, underscoring how those extra flights and capacity upgrades helped push ORD back to the top of the operations list.
