Air Miles Calculator

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

Distance from Heathrow Airport to O'Hare International Airport is 3953 miles / 6361 kilometers / 3435 nautical miles.

Calculations with different 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).

Flight duration

Estimated flight time from Heathrow Airport (LHR) to O'Hare International Airport (ORD) is 7 hours 59 minutes.

Time difference and current local times

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

Time Difference

London
Chicago

London

 GMT

Chicago, IL

 CST

Airport information


A 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

B 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

Map

Flight map from London to Chicago.

Frequent Flyer Miles Calculator

London (LHR) → Chicago (ORD).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
3953
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
3953

Round trip?