Time Difference: Chicago vs Seoul
Chicago
11:06:45 AM CST
Friday, November 13, 2026
15h
15h
Seoul
2:06:45 AM KST
Saturday, November 14, 2026
Seoul is 15 hours ahead of Chicago.
Quick Reference
- Chicago
- CST (GMT-6)
CDT starts on Mar 14, 2027
- Seoul
- KST (GMT+9)
No Daylight Saving Time
Frequently Asked Questions
- What is the time difference between Chicago and Seoul?
- Seoul is 15 hours ahead of Chicago.
- When is the best time to call from Chicago to Seoul?
- The best time to call is during overlapping business hours (9 AM – 5 PM) in both cities. Use the interactive converter on this page to visually compare hours side by side.
- Does the time difference change with daylight saving time?
- The time difference may change when either city enters or exits daylight saving time. Chicago uses CST and Seoul uses KST.