London to Chicago Time Difference
Chicago is 6 hours behind London. When it is noon in London, it is 06:00 in Chicago.
London (UTC+1) → Chicago (UTC-5)
🕐 Interactive Time Explorer
When it's 00:00 in London, it's 18:00 in Chicago
Drag the slider to see corresponding times in both cities
🤝 Best Meeting Times
London & Chicago✓ Perfect Match (2 hours)
◐ Extended Hours (7 hours)
✈️ Travel Information
Distance
6,353 km
Est. Flight Time
~8.5h
Time Difference
-6h
Work Hours Overlap
2h
Limited
🔴 Office Closed
Today 15:00
15:00 - 17:00
⏰ Quick Conversion
06:00
London
00:00
Chicago
09:00
London
03:00
Chicago
12:00
London
06:00
Chicago
15:00
London
09:00
Chicago
18:00
London
12:00
Chicago
21:00
London
15:00
Chicago
00:00
London
18:00
Chicago (-1)
03:00
London
21:00
Chicago (-1)
Frequently Asked Questions
How many hours is London ahead of Chicago?
Chicago is 6 hours behind London. When it is 12:00 noon in London, it is 06:00 in Chicago. London operates on Europe/London (UTC+1), while Chicago uses America/Chicago (UTC-5).
What is the best time to call Chicago from London?
There are 3 hours of overlapping business time (9 AM–5 PM) between London and Chicago. The best window is 15:00–18:00 London time (09:00–12:00 in Chicago).
Does the London to Chicago time difference change throughout the year?
The time difference can shift by up to one hour when either city observes Daylight Saving Time (DST). DST transition dates differ between countries — typically March/April in the Northern Hemisphere and October in the Southern Hemisphere. Always verify the live difference above when scheduling important meetings near DST changeover dates.
Flying between London and Chicago
The distance between London and Chicago is approximately 6,353 km. A direct flight typically takes around 8.5 hours. Your arrival clock will show local Chicago time — use our Flight Time Calculator to predict exact arrival times.