The flight distance from Ciampino Airport (CIA) in Roma, Italy to Harry Reid International Airport (LAS) in Las Vegas, United States is 9,856 kilometers (6,124 miles / 5,322 nautical miles). The estimated flight time for this route is approximately 13h, flying northwest at a heading of 320°.

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

Time zone information: When it's 21:02 in Roma, it's 12:02 in Las Vegas. With a 9-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 1,754 feet between the two airports. Harry Reid International Airport sits higher than Ciampino Airport.

The return flight from Las Vegas (LAS) to Roma (CIA) follows a heading of 36° (northeast). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

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