The flight distance from Leonardo Da Vinci (Fiumicino) International Airport (FCO) in Rome, Italy to Montgomery County Airpark (GAI) in Gaithersburg, United States is 7,198 kilometers (4,473 miles / 3,887 nautical miles). The estimated flight time for this route is approximately 9h, flying west northwest at a heading of 301°.

This is a long-haul route typically operated by wide-body aircraft such as the Boeing 777 or Airbus A350. Full meal service, in-flight entertainment, and comfort amenities are standard.

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 06:25 in Rome, it's 00:25 in Gaithersburg. With a 6-hour time difference, travelers should plan for significant jet lag. It typically takes one day per hour of time difference to fully adjust.

The return flight from Gaithersburg (GAI) to Rome (FCO) follows a heading of 56° (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 Montgomery County Airpark (GAI) detail pages, or use our flight duration calculator to compare other routes.