How is the flight distance measured?

Flight distances are measured as the great-circle (straight-line) distance between airports. Actual flight paths may be slightly longer due to air traffic routing and weather avoidance.

How long does the flight from Chicago to London take?

Flight time depends on the exact route and aircraft, but at roughly 6,353 km the typical non-stop flight takes 1–10 hours. Check the flight duration page for the exact average.

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Flight Distance: Chicago to London

6,353

Kilometres (km)

3,948

Miles (mi)

3,430

Nautical miles

About this flight distance

The great circle distance from Chicago to London is approximately 6,353 km. The typical flight time is 8h 15m.

This is the shortest possible distance between the two cities as the crow flies. Real flight paths are often slightly longer due to air traffic control routing, weather, and airspace restrictions.

Related route pages

→Direct flights Chicago to London →Flight duration Chicago to London →Cheapest day to fly Chicago to London →Flights Chicago to London

Nearby airports

Near Chicago

Chicago Midway International Airport (MDW)25 km
Gary Chicago International Airport (GYY)57 km
Michigan City Municipal Airport (MGC)95 km

Near London

London City Airport (LCY)36 km
London Gatwick Airport (LGW)41 km
London Luton Airport (LTN)45 km

Frequently Asked Questions

The great-circle distance from Chicago to London is approximately 6,353 km (3,948 miles).