Core Insights - United Airlines is asserting its dominance over American Airlines at Chicago O'Hare International Airport, with United's CEO Scott Kirby claiming victory in the competitive landscape [2][6] - American Airlines, however, maintains a strong presence in Chicago, with CEO Robert Isom emphasizing the airline's long-term commitment to the hub and recent growth in frequent flyer enrollments [3][8] United Airlines - United Airlines has announced the addition of ten new domestic destinations at O'Hare, enhancing connectivity and economic growth in Chicago [4][10] - United's daily departures at O'Hare are approximately 500, serving 200 destinations, while its share of local passengers has increased from 38% in 2015 to 51% in 2024 [5][7] - The airline has received five new gates, allowing for expanded service and the introduction of new routes, including exclusive daily services to several cities starting in spring 2026 [10][12] American Airlines - American Airlines currently operates about 480 daily departures to 160 destinations and has been serving Chicago for nearly 100 years [5][3] - The airline reported a 7% increase in frequent flyer account enrollments in the third quarter, with a notable 20% year-over-year growth in Chicago [8][9] - Isom expressed confidence that Chicago will remain one of American's largest and most profitable hubs, with plans to maintain over 500 daily departures [9] Competitive Landscape - The competition between United and American is intensifying, with Kirby alleging that American is losing $800 million annually at O'Hare and may need to dehub [6] - American's spokesman highlighted the importance of maintaining a global reach to attract lost passengers, acknowledging that United currently has a broader international presence [13]