Time Difference: Buenos Aires vs Chicago
Chicago is 2 hours behind Buenos Aires.
Quick Reference
- Buenos Aires
- ART (GMT-3)
No Daylight Saving Time
- Chicago
- CDT (GMT-5)
CST starts on Nov 1, 2026
Frequently Asked Questions
- What is the time difference between Buenos Aires and Chicago?
- Chicago is 2 hours behind Buenos Aires.
- When is the best time to call from Buenos Aires to Chicago?
- 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. Buenos Aires uses ART and Chicago uses CDT.