The flight distance from Leonardo Da Vinci (Fiumicino) International Airport (FCO) in Rome, Italy to Mammoth Yosemite Airport (MMH) in Mammoth Lakes, United States is 9,888 kilometers (6,144 miles / 5,339 nautical miles). The estimated flight time for this route is approximately 13h, flying northwest at a heading of 323°.

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 13:11 in Rome, it's 04:11 in Mammoth Lakes. 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 7,120 feet between the two airports. Mammoth Yosemite Airport sits higher than Leonardo Da Vinci (Fiumicino) International Airport. Travelers arriving at the higher-elevation airport should be aware of potential altitude effects.

The return flight from Mammoth Lakes (MMH) to Rome (FCO) follows a heading of 34° (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 Leonardo Da Vinci (Fiumicino) International Airport (FCO) and Mammoth Yosemite Airport (MMH) detail pages, or use our flight duration calculator to compare other routes.