Chicago → Buenos Aires: Time Difference
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How the difference works
Chicago uses America/Chicago (UTC-6 standard time) and Buenos Aires uses America/Argentina/Buenos_Aires (UTC-3 standard time) — a standard-time gap of 3 hours ahead of Chicago. Chicago observes daylight saving time while Buenos Aires does not, so the difference shifts by one hour twice a year.
Distance: about 9,012 km (5,600 mi) great-circle distance.
Chicago → Buenos Aires, hour by hour
| Chicago | Buenos Aires | Best hours to call |
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Frequently asked questions
What is the time difference between Chicago and Buenos Aires?
In standard time, Buenos Aires is 3 hours ahead of Chicago. Chicago observes daylight saving time while Buenos Aires does not, so the difference shifts by one hour twice a year.
When it is 9:00 in Chicago, what time is it in Buenos Aires?
In standard time it is 12:00 in Buenos Aires. During daylight saving periods the answer can move by an hour — the live table on this page always reflects today's rules.
How far is Buenos Aires from Chicago?
About 9,012 km (5,600 miles) as the crow flies, computed from city-center coordinates.