O'Hare International Airport (Usa) – Location, Geography, Facts

O'Hare International Airport is a major international airport in the United States located within the municipal boundaries of the City of Chicago, Illinois.

O'Hare International Airport, Usa.

Country: Usa
Coordinates: 41.9786° N, 87.9047° W

O'Hare International Airport overview

O'Hare International Airport is a major international airport in the United States located within the municipal boundaries of the City of Chicago, Illinois. The facility occupies roughly 7,627 acres and is sited at approximately 41.9742°N, 87.9073°W, featuring eight runways and a complex of four numbered passenger terminals. O'Hare International Airport is significant as a principal air transport and cargo node with a long-standing role in national airline networks and regional economic infrastructure.

O'Hare International Airport coordinates

O'Hare International Airport is commonly mapped at approximately 41.9786° N, 87.9047° W, or 41.9786, -87.9047 in decimal degrees.

Degrees: 41.9786° N, 87.9047° W

Decimal: 41.9786, -87.9047

Where O'Hare International Airport is located

O'Hare International Airport sits on the far northwest side of the City of Chicago in Cook County, bordering the villages of Rosemont, Schiller Park, and Bensenville. The airport occupies a largely level portion of the Chicago Plain, adjacent to remnant wetlands and the corridor of the Des Plaines River to the west. Administratively it is owned by the City of Chicago and falls under municipal jurisdiction rather than county or state airport authority.

Why O'Hare International Airport is important

O'Hare International Airport matters for its scale, network role, and functional design that supported the rise of hub-and-spoke airline operations. The field’s eight-runway airfield and multiple mid-field concourses enabled high-density flight operations in both domestic and international markets. It is distinct for being named after Medal of Honor recipient Edward "Butch" O'Hare and for repeatedly undergoing large-scale airfield reconfigurations to increase capacity, including a modernization program that reoriented runways into coordinated parallel sets.

History of O'Hare International Airport

O'Hare International Airport originated as Orchard Place, an early 1940s manufacturing airfield associated with Douglas Aircraft and wartime production, and was converted to municipal commercial service after the war as Chicago sought greater airfield capacity than Midway could provide. The airport was renamed in honor of Edward O'Hare as it transitioned into a dominant postwar aviation facility, and it expanded through mid-century jet-age investments that added concrete runways and new terminals. In the late 20th and early 21st centuries the site underwent phased reconfigurations and terminal modernizations driven by airline hub strategies and federal environmental reviews.

Natural features of O'Hare International Airport

O'Hare International Airport’s visible structure combines large reinforced-concrete runways, extensive taxiways, and a cluster of terminals and concourses built with steel framing and glazed curtain walls. The terminal complex comprises four numbered terminals with multiple concentric concourses and satellite piers, while the airfield presents a mix of parallel runway pairs and crosswind strips arranged for independent simultaneous operations. Pavement consists predominantly of jointed and continuously reinforced concrete designed for heavy jet traffic, set upon glacially derived soils of the Chicago Plain.

Environment, protection, and monitoring of O'Hare International Airport

O'Hare International Airport is managed by the City of Chicago Department of Aviation under federal aviation regulation and environmental oversight, including formal NEPA review for major projects. The airport’s location on former wetlands has required long-term stormwater management, wetland mitigation, and onsite habitat monitoring to address water and wildlife interactions. Municipal and federal agencies maintain noise and air-quality monitoring networks and coordinate stewardship measures related to airfield safety and regional environmental compliance.

O'Hare International Airport facts

O'Hare International Airport began as Orchard Place, a wartime aircraft manufacturing airfield linked to Douglas Aircraft.
The airport’s property lies entirely within Chicago city limits while abutting the village boundaries of Rosemont, Schiller Park, and Bensenville.
It carries the name of naval aviator Edward "Butch" O'Hare, who received the Medal of Honor for actions in World War II.
The airfield configuration at O'Hare includes eight runways arranged in both parallel and crosswind formations to support high-density operations.
The City of Chicago Department of Aviation led a multi-phase modernization of O'Hare that proceeded under federal environmental review and mitigation requirements.

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