✈ LHR → ORD
8H 18M IN ECONOMY. PACK MELATONIN. PACK A NECK PILLOW. PACK REGRETS.
Flight from London to Chicago
From Heathrow (LHR), United Kingdom Europe → O'Hare (ORD), USA North America
↔ Flying the other way? Chicago → London
How long is the flight from London to Chicago?
A nonstop flight from London (LHR) to Chicago (ORD) takes about 8 hours 18 minutes, covering a great-circle distance of 3,943 miles (6,345 km). Actual scheduled time varies by airline, routing, and wind — expect ±15 to 30 minutes from this estimate.
Avg flight time
8h 18m
Nonstop, scheduled
Distance
3,943 mi
6,345 km · great-circle
Avg speed
764 km/h
Door-to-door including taxi
Time zones & jet lag
London timezone
UTC+1
Europe/London
Chicago timezone
UTC-5
America/Chicago
Time difference
-6h
6 hours behind
Jet lag (rough)
~4.2d
Westward — easier
CO₂ footprint per passenger
Economy class, single passenger. Source: DEFRA 2024 averages.
This flight emits roughly 3.6× the CO₂ of an equivalent train trip and 0.9× a car driven alone over the same distance.
Flights from London
Nearest destinations
- London → Manchester
- London → Paris
- London → Brussels
- London → Amsterdam
- London → Dublin
- London → Edinburgh
- London → Frankfurt
- London → Zurich
- London → Milan
- London → Munich
Long-haul from London
- London → Auckland
- London → Sydney
- London → Melbourne
- London → Bali (Denpasar)
- London → Santiago
- London → Buenos Aires
- London → Singapore
- London → Manila
- London → Kuala Lumpur
- London → Taipei
More flights to North America
Flights to Chicago
Nearest origins
- Toronto → Chicago
- Atlanta → Chicago
- New York → Chicago
- Dallas → Chicago
- Boston → Chicago
- Miami → Chicago
- Cancun → Chicago
- Las Vegas → Chicago
- Mexico City → Chicago
- Seattle → Chicago
Long-haul to Chicago
- Bali (Denpasar) → Chicago
- Melbourne → Chicago
- Singapore → Chicago
- Kuala Lumpur → Chicago
- Sydney → Chicago
- Johannesburg → Chicago
- Bangkok → Chicago
- Cape Town → Chicago
- Auckland → Chicago
- Manila → Chicago