Physical Address
304 North Cardinal St.
Dorchester Center, MA 02124
Chicago O’Hare International Airport is one of the most important aviation hubs in the world. It serves as Chicago’s primary international gateway, one of the largest connecting hubs in the United States, and one of the busiest airports anywhere by flight activity.
Quick Answer (2026): Through October 2025, O’Hare recorded 704,403 total aircraft operations. Chicago airport system materials also say O’Hare and Midway together serve more than 100 million passengers each year, underscoring the scale of ORD’s role in the national air transport system.
O’Hare Airport key statistics
| Metric | Latest verified figure | Year / period |
|---|---|---|
| Total aircraft operations | 704,403 | Jan–Oct 2025 |
| Domestic operations | 632,666 | Jan–Oct 2025 |
| International operations | 71,737 | Jan–Oct 2025 |
| Airport system passengers | 100 million+ combined | Current Chicago airport system statement |
How busy is O’Hare?
Through October 2025, O’Hare recorded 704,403 total aircraft operations, including 632,666 domestic and 71,737 international operations.
That is the clearest updated operations figure I could verify directly from the official Chicago Department of Aviation traffic PDFs in retrieved search results.
O’Hare’s role in Chicago aviation
Chicago airport system materials say O’Hare and Midway together serve more than 100 million passengers each year and connect travelers to more than 260 locations via 50 commercial carriers.
ORD is the dominant global gateway in that system, especially for long-haul international service and hub connectivity.
Why O’Hare matters
In early 2026, Chicago’s airport newsletter described O’Hare as America’s busiest airfield. That label fits the airport’s long-standing position as one of the world’s most important hubs by flight volume and network breadth.
FAQ
How many operations did O’Hare handle in 2025?
Through October 2025, O’Hare recorded 704,403 total aircraft operations.
How many of those were international operations?
O’Hare recorded 71,737 international operations through October 2025.
Is O’Hare still one of the busiest airports in the world?
Yes. O’Hare remains one of the world’s busiest hubs by flight activity.
How big is the Chicago airport system?
Chicago says O’Hare and Midway together serve more than 100 million passengers each year.
Sources / References
