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How far is London from Chicago, IL?

The distance between Chicago (Chicago O'Hare International Airport) and London (London Heathrow Airport) is 3953 miles / 6361 kilometers / 3435 nautical miles. The estimated flight time is 7 hours and 59 minutes.

Chicago O'Hare International Airport – London Heathrow Airport

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3953
Miles
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6361
Kilometers
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3435
Nautical miles

Distance from Chicago to London

There are several ways to calculate the distance from Chicago to London. Here are two standard 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 planet.

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).

How long does it take to fly from Chicago to London?

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

What is the time difference between Chicago and London?

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

Flight carbon footprint between Chicago O'Hare International Airport (ORD) and London Heathrow Airport (LHR)

On average, flying from Chicago to London generates about 450 kg of CO2 per passenger, and 450 kilograms equals 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