The flight distance from Ciampino Airport (CIA) in Roma, Italy to Denver International Airport (DEN) in Denver, United States is 8,951 kilometers (5,562 miles / 4,833 nautical miles). The estimated flight time for this route is approximately 12h, flying northwest at a heading of 316°.

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 10:12 in Roma, it's 02:12 in Denver. With a 8-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 5,007 feet between the two airports. Denver International Airport sits higher than Ciampino Airport. Travelers arriving at the higher-elevation airport should be aware of potential altitude effects.

The return flight from Denver (DEN) to Roma (CIA) follows a heading of 42° (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 Denver International Airport (DEN) detail pages, or use our flight duration calculator to compare other routes.