The flight distance from Antoine De St Exupery Airport (OES) in San Antonio Oeste, Argentina to Chicago O'Hare International Airport (ORD) in Chicago, United States is 9,483 kilometers (5,892 miles / 5,120 nautical miles). The estimated flight time for this route is approximately 12h, flying north northwest at a heading of 343°.

This is an ultra-long-haul route, one of the longest in aviation. It requires wide-body aircraft with extended range capability such as the Airbus A350-900ULR or Boeing 777-200LR. Passengers should prepare for an extended flight with multiple meal services.

This is an international route connecting Argentina with United States. It is an intercontinental flight between South America and North America. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 02:50 in San Antonio Oeste, it's 23:50 in Chicago. The 3-hour time difference may cause some jet lag. Most travelers adjust within a day or two.

The return flight from Chicago (ORD) to San Antonio Oeste (OES) follows a heading of 163° (south southeast). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the Antoine De St Exupery Airport (OES) and Chicago O'Hare International Airport (ORD) detail pages, or use our flight duration calculator to compare other routes.