# How far is Chicago, IL, from Rome?

The distance between Rome (Leonardo da Vinci–Fiumicino Airport) and Chicago (Chicago O'Hare International Airport) is 4823 miles / 7762 kilometers / 4191 nautical miles.

4823
Miles
7762
Kilometers
4191
Nautical miles
9 h 37 min
561 kg

## Distance from Rome to Chicago

There are several ways to calculate the distance from Rome to Chicago. Here are two standard methods:

Vincenty's formula (applied above)
• 4823.115 miles
• 7762.052 kilometers
• 4191.173 nautical miles

Vincenty's formula calculates the distance between latitude/longitude points on the earth's surface using an ellipsoidal model of the planet.

Haversine formula
• 4810.711 miles
• 7742.090 kilometers
• 4180.394 nautical miles

The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance – the shortest distance between two points).

## How long does it take to fly from Rome to Chicago?

The estimated flight time from Leonardo da Vinci–Fiumicino Airport to Chicago O'Hare International Airport is 9 hours and 37 minutes.

## What is the time difference between Rome and Chicago?

The time difference between Rome and Chicago is 7 hours. Chicago is 7 hours behind Rome.

## Flight carbon footprint between Leonardo da Vinci–Fiumicino Airport (FCO) and Chicago O'Hare International Airport (ORD)

On average, flying from Rome to Chicago generates about 561 kg of CO2 per passenger, and 561 kilograms equals 1 237 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

## Map of flight path from Rome to Chicago

See the map of the shortest flight path between Leonardo da Vinci–Fiumicino Airport (FCO) and Chicago O'Hare International Airport (ORD).

## Airport information

Origin Leonardo da Vinci–Fiumicino Airport
City: Rome
Country: Italy
IATA Code: FCO
ICAO Code: LIRF
Coordinates: 41°48′16″N, 12°15′2″E
Destination Chicago O'Hare International Airport
City: Chicago, IL
Country: United States
IATA Code: ORD
ICAO Code: KORD
Coordinates: 41°58′42″N, 87°54′17″W