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Distance between Chicago, IL (ORD) and London (LHR)

Flight distance from Chicago to London (Chicago O'Hare International Airport – London Heathrow Airport) is 3953 miles / 6361 kilometers / 3435 nautical miles. Estimated flight time is 7 hours 59 minutes.

Chicago – London

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3953
Miles
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6361
Kilometers
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3435
Nautical miles

How far is London from Chicago?

There are several ways to calculate distances between Los Angeles and Chicago. Here are two common methods:

Vincenty's formula (applied above)
  • 3952.811 miles
  • 6361.433 kilometers
  • 3434.899 nautical miles

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

Haversine formula
  • 3941.829 miles
  • 6343.759 kilometers
  • 3425.356 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).

Flight Duration

Estimated flight time from Chicago O'Hare International Airport to London Heathrow Airport is 7 hours 59 minutes.

Time difference

The time difference between Chicago and London is 6 hours. London is 6 hours ahead of Chicago.
Chicago time to London time converter

Carbon dioxide emissions

On average flying from Chicago to London generates about 450 kg of CO2 per passenger, 450 kilograms is equal to 993 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from Chicago to London

Shortest flight path between Chicago O'Hare International Airport (ORD) and London Heathrow Airport (LHR).

Airport information

Origin Chicago O'Hare International Airport
City: Chicago, IL
Country: United States Flag of United States
IATA Code: ORD
ICAO Code: KORD
Coordinates: 41°58′42″N, 87°54′17″W
Destination London Heathrow Airport
City: London
Country: United Kingdom Flag of United Kingdom
IATA Code: LHR
ICAO Code: EGLL
Coordinates: 51°28′14″N, 0°27′42″W