The flight distance from Cooma Snowy Mountains Airport (OOM) in Cooma, Australia to Chicago O'Hare International Airport (ORD) in Chicago, United States is 15,159 kilometers (9,420 miles / 8,185 nautical miles). The estimated flight time for this route is approximately 19h, flying east northeast at a heading of 64°.

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 Australia with United States. It is an intercontinental flight between Oceania and North America. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 06:46 in Cooma, it's 13:46 in Chicago. With a 17-hour time difference, travelers should plan for significant jet lag. It typically takes one day per hour of time difference to fully adjust.

There is a significant elevation difference of 2,408 feet between the two airports. Chicago O'Hare International Airport sits lower than Cooma Snowy Mountains Airport.

The return flight from Chicago (ORD) to Cooma (OOM) follows a heading of 258° (west southwest). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the Cooma Snowy Mountains Airport (OOM) and Chicago O'Hare International Airport (ORD) detail pages, or use our flight duration calculator to compare other routes.