Chicago to Ottawa Time Difference
Ottawa is 1 hour ahead of Chicago. When it is noon in Chicago, it is 13:00 in Ottawa.
Chicago (UTC-5) → Toronto (UTC-4)
🕐 Interactive Time Explorer
When it's 20:00 in Chicago, it's 21:00 in Ottawa
Drag the slider to see corresponding times in both cities
🤝 Best Meeting Times
Chicago & Ottawa✓ Perfect Match (7 hours)
◐ Extended Hours (2 hours)
✈️ Travel Information
Distance
1,036 km
Est. Flight Time
~2.2h
Time Difference
+1h
Work Hours Overlap
7h
Excellent
🟢 Good to Call Now
15:54
09:00 - 16:00
⏰ Quick Conversion
06:00
Chicago
07:00
Ottawa
09:00
Chicago
10:00
Ottawa
12:00
Chicago
13:00
Ottawa
15:00
Chicago
16:00
Ottawa
18:00
Chicago
19:00
Ottawa
21:00
Chicago
22:00
Ottawa
00:00
Chicago
01:00
Ottawa
03:00
Chicago
04:00
Ottawa
Frequently Asked Questions
How many hours is Chicago behind Ottawa?
Ottawa is 1 hour ahead of Chicago. When it is 12:00 noon in Chicago, it is 13:00 in Ottawa. Chicago operates on America/Chicago (UTC-5), while Ottawa uses America/Toronto (UTC-4).
What is the best time to call Ottawa from Chicago?
There are 7 hours of overlapping business time (9 AM–5 PM) between Chicago and Ottawa. The best window is 09:00–16:00 Chicago time (10:00–17:00 in Ottawa).
Does the Chicago to Ottawa 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 Chicago and Ottawa
The distance between Chicago and Ottawa is approximately 1,036 km. A direct flight typically takes around 2.2 hours. Your arrival clock will show local Ottawa time — use our Flight Time Calculator to predict exact arrival times.