Route guide · CHI → LON
Chicago to London flights
In short
The great-circle distance from Chicago O'Hare International Airport (ORD) in Chicago to London Heathrow Airport (LHR) in London is 6,344 km (3,942 mi).
The initial great-circle heading from ORD to LHR is 48° (NE).
AMZBooking lists 2 airports for Chicago (ORD, MDW) and 5 airports for London (LHR, LGW, STN, LTN, LCY).
Airport data: OurAirports, retrieved 2026-10-18; distances and headings computed by AMZBooking.
Data updated
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- Great-circle distance
- 6,344 km
- 3,942 mi · ORD–LHR
- Initial direction
- NE
- 48° from true north
- Airport combinations
- 10
- listed airport pairs compared below
Great-circle distance is the shortest path over the Earth’s surface, not the distance flown or a flight time. We don’t show prices here — live fares appear when you search. Method
Airports at each end
Every airport pair, by distance
| From → to | Great-circle distance |
|---|---|
| ORD → LTN | 6,329 km · 3,932 mi |
| MDW → LTN | 6,334 km · 3,936 mi |
| ORD → LHR | 6,344 km · 3,942 mi |
| MDW → LHR | 6,349 km · 3,945 mi |
| ORD → STN | 6,365 km · 3,955 mi |
| MDW → STN | 6,370 km · 3,958 mi |
| ORD → LCY | 6,374 km · 3,960 mi |
| ORD → LGW | 6,377 km · 3,963 mi |
| MDW → LCY | 6,379 km · 3,964 mi |
| MDW → LGW | 6,382 km · 3,966 mi |
Alternatives near Chicago
| Airport | Location | Distance |
|---|---|---|
| GYYGary/Chicago International Airport | Gary, United States | 57 km36 mi |
| MGCMichigan City Municipal Airport | Michigan City, United States | 95 km59 mi |
Alternatives near London
| Airport | Location | Distance |
|---|---|---|
| SENLondon Southend Airport | Southend-on-Sea, Essex, United Kingdom | 81 km50 mi |
| SOUSouthampton Airport | Southampton, United Kingdom | 85 km53 mi |
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