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How far is Chicago, IL from London?

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

London Heathrow Airport – Chicago O'Hare International Airport

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3953
Miles
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6361
Kilometers
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3435
Nautical miles

Distance from London to Chicago

There are several ways to calculate distance from London to 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).

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

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

What is the time difference between London and Chicago?

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

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

On average flying from London to Chicago 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 London to Chicago

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

Airport information

Origin 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
Destination 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