Distance From London Heathrow Airport to Chicago O'Hare International Airport, LHR - ORD Distance

The distance from London Heathrow Airport (LHR) to Chicago O'Hare International Airport (ORD) is 3942 miles or 6344 kilometers or 3423 nautical miles.

The distance shown below is direct flight distance between airports. Straight-line distance does not account for the surface between the two points. It is the distance a bird or airplane would travel between the two points when flying above the surface. The straight line distance is the direct route between two points, regardless of whether or not there are roads that connect them.

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How long does it take to travel from London ( United Kingdom ) to Chicago ( United States )?

A one-way nonstop (direct) flight between London and Chicago takes around 9 hours 3 minutes.

Estimated flight time from London Heathrow Airport, London, United Kingdom to Chicago O'Hare International Airport, Chicago, United States is 9 hours 3 minutes under avarage conditions. Your actual flying time may vary depending on wind direction/speed or weather conditions. This calculation does not include the departure and landing times of the aircraft. In addition, it does not cover the person identity check, ticket check-in and baggage collection times at the airport.

Travel Distance Between the Airports • LHR - ORD

Kilometers		6344 km
Statute Miles		3942 miles
Nautical Miles		3423 nm
Avg. Time of Flight		9 hours 3 minutes

London Heathrow Airport to Chicago O'Hare International Airport Flight Route Map - LHR to ORD Flight Path

Location of London Heathrow Airport & Chicago O'Hare International Airport is given below.
Click the map to view London to Chicago nonstop flight path and travel direction.

Click to see flight route on Google Map between London, United Kingdom and Chicago, United States. .

Nonstop flight route between London, United Kingdom and Chicago, United States.

Time Difference Between the Airports • LHR - ORD

Time difference between London (United Kingdom) and Chicago (United States) is 6 Hours.
Chicago time is 6 Hours behind London.

Location	Local Time
London (United Kingdom)	2025-12-15, 15:27:07 GMT
Chicago (United States)	2025-12-15, 09:27:07 CST

Why should you arrive 3 hours before international flight? Flyers who are traveling to an international destination should arrive at the airport earlier than domestic flyers. This is because international flights can have additional check-in requirements, like passport verification, that need to be completed before you receive your boarding pass.

Origin

London Heathrow Airport (LHR / EGLL) London, United Kingdom

Destination

Chicago O'Hare International Airport (ORD / KORD) Chicago, United States