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Flight Time from Chicago to London

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By Sophie1 min readPublished
Table of contents
Palace of Westminster in London
Photo: Photograph by Mike Peel ( www.mikepeel.net ). · CC BY-SA 4.0

Flight time

8h 29m

estimated nonstop

Distance

3,942 mi

Time difference

London is 6 hours ahead of Chicago.

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Estimated nonstop time from great-circle distance and typical airline block speeds. Actual times vary about ±30 min with winds, routing and aircraft - eastbound is usually faster than westbound. Times shown for direct flights; connections add layover time.

In Brief

How long is the flight from Chicago to London?

The flight from Chicago (ORD) to London (LHR) takes approximately 8h 29m nonstop, covering a great-circle distance of 3,942 mi (6,344 km). London is 6 hours ahead of Chicago. Actual times vary by about 30 minutes with winds, air-traffic routing and aircraft type, and connecting flights take longer once you add layover time.

Key takeaways

  • Flight time: about 8h 29m nonstop (ORD → LHR).
  • Distance: 3,942 mi / 6,344 km great-circle.
  • London is 6 hours ahead of Chicago.
  • Eastbound is usually 30-60 min faster than westbound on long routes.
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Chicago to London flight: FAQ

Flight time, distance and time difference for this route.

The nonstop flight from Chicago (ORD) to London (LHR) takes about 8h 29m, covering a great-circle distance of 3,942 mi (6,344 km). Actual times vary by roughly 30 minutes with winds, routing and aircraft; connecting flights take longer once you add the layover.

Chicago and London are about 3,942 mi (6,344 km) apart as the crow flies - the great-circle distance airlines fly close to. London is 6 hours ahead of Chicago.

Roughly, but not exactly. The distance is identical, so the estimate is the same both ways, but in reality one direction is usually 30-60 minutes faster because of high-altitude winds - eastbound flights ride the jet stream while westbound flights fight a headwind.

London is 6 hours ahead of Chicago. That's based on standard time-zone offsets and doesn't account for daylight saving, so it can shift by an hour around DST changeovers. Use the calculator above with your departure time to see your local arrival time.

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