Time Difference Between Chicago and London
London is 6 hours ahead of Chicago.
London is 6 hours ahead of Chicago. When it is 9:00 AM in Chicago, it is 3:00 PM in London.
What time is it in London?
For a given hour in Chicago, here’s the matching local time in London. Highlighted rows fall within London’s working hours (9 AM–5 PM) — the easiest times to reach someone.
| Chicago | London |
|---|---|
| 12:00 AM | 6:00 AM |
| 3:00 AM | 9:00 AMworking hours |
| 6:00 AM | 12:00 PMworking hours |
| 9:00 AM | 3:00 PMworking hours |
| 12:00 PM | 6:00 PM |
| 3:00 PM | 9:00 PM |
| 6:00 PM | 12:00 AM the next day |
| 9:00 PM | 3:00 AM the next day |
How far apart are Chicago and London?
London (United Kingdom) runs 6 hours ahead of Chicago (United States). In practical terms, the working day in London starts while Chicago is still in the early hours or asleep, which is what makes scheduling between the two take a little planning.
Best time to schedule a call or meeting
The comfortable window — when both cities are inside normal 9-to-5 hours — runs from about 9:00 AM to 11:00 AM in Chicago time, roughly 2 hours. Schedule calls inside that band and neither side is working unsocial hours.
A note on daylight saving
Both Chicago and London observe daylight saving in the same direction, so the difference is normally the same in summer and winter. They change their clocks on slightly different dates, though, so for a week or two each spring and autumn the gap can be an hour off — worth double-checking around those changeovers.
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Frequently Asked Questions
London is 6 hours ahead of Chicago. When it is 9:00 AM in Chicago, it is 3:00 PM in London.