Time Difference between Chicago and Boulder
Chicago (UTC-5) → Denver (UTC-6)
🕐 Interactive Time Explorer
When it's 15:00 in Chicago, it's 14:00 in Boulder
Drag the slider to see corresponding times in both cities
🤝 Best Meeting Times
Chicago & Boulder✓ Perfect Match (7 hours)
◐ Extended Hours (2 hours)
✈️ Travel Information
Distance
1,493 km
Est. Flight Time
~2.8h
Time Difference
-1h
Work Hours Overlap
7h
Excellent
🟢 Good to Call Now
10:49
10:00 - 17:00
⏰ Quick Conversion
06:00
Chicago
05:00
Boulder
09:00
Chicago
08:00
Boulder
12:00
Chicago
11:00
Boulder
15:00
Chicago
14:00
Boulder
18:00
Chicago
17:00
Boulder
21:00
Chicago
20:00
Boulder
00:00
Chicago
23:00
Boulder (-1)
03:00
Chicago
02:00
Boulder
❓ Frequently Asked Questions
Time Difference Between Chicago and Boulder
Chicago, United States and Boulder, United States are separated by a time difference of 1 hour. When it's noon in Chicago, it's 1 hour earlier in Boulder.
Chicago operates on America/Chicago timezone, while Boulder uses America/Denver. Both cities may observe Daylight Saving Time at different dates, which can temporarily change the time difference by an hour.
Best Time to Call
With only 1 hour difference, scheduling calls between Chicago and Boulder is relatively easy.
Flight Considerations
The distance between Chicago and Boulder is approximately 1,493 km. A direct flight typically takes around 2.8 hours. When traveling, remember that your arrival time will be in local time. Use our Flight Time Calculator for accurate arrival predictions.