The flight distance from Harry Reid International Airport (LAS) in Las Vegas, United States to Monte Caseros Airport (MCS) in Monte Caseros, Argentina is 9,510 kilometers (5,909 miles / 5,135 nautical miles). The estimated flight time for this route is approximately 12h, flying southeast at a heading of 133°.

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

Time zone information: When it's 19:58 in Las Vegas, it's 23:58 in Monte Caseros. The 4-hour time difference may cause some jet lag. Most travelers adjust within a day or two.

There is a significant elevation difference of 2,011 feet between the two airports. Monte Caseros Airport sits lower than Harry Reid International Airport.

The return flight from Monte Caseros (MCS) to Las Vegas (LAS) follows a heading of 317° (northwest). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the Harry Reid International Airport (LAS) and Monte Caseros Airport (MCS) detail pages, or use our flight duration calculator to compare other routes.