Air Miles Calculator

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

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

Time difference and current local times

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

Time Difference

Chicago
London

Chicago, IL

 CST

London

 GMT

Airport information


A 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

B 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

Map

Flight map from Chicago to London.

Frequent Flyer Miles Calculator

Chicago (ORD) → London (LHR).

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?