United’s information page about its Chicago O’Hare hub
Chicago O'Hare Airport
One of the City’s Largest Employers
18,000+ local employees
Chicago’s Largest Airline
500+ daily departures
Leader in Sustainability
First airline to purchase sustainable aviation fuel for ORD
Giving Back to the Community
More than $2 million contributed to local non-profits, partners, and organizations in 2024
City’s Broadest Network
Nearly 200 destinations around the globe
Best On-Time Performance
#1 in on-time arrivals to Chicago in 2024
Game Day
Official airline of the Chicago Bears, Blackhawks, Bulls, Red Stars, Sky and White Sox
Chicago’s Hometown Airline®
Willis Tower headquarters named 2023 Coolest Office in Chicago
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Updated January 2025