Based on 5384 flights from 01/01/2010 to 12/31/2010
61%
On Time
16%
5-20 min. Delay
20%
>20 min. Delay
3%
Cancelled/Diverted
Average
(median)
Be Prepared For
(85th percentile)
Cancelled
or diverted
In Good Weather...
3 min. early
17 min. late
1%
In Bad Weather...
4 min. late
46 min. late
5%
In Fog... (6%)
17 min. late
81 min. late
13%
In Rain... (32%)
4 min. late
48 min. late
6%
In Snow... (16%)
5 min. late
46 min. late
5%
In Thunder... (11%)
8 min. late
72 min. late
11%
“Be Prepared For”
gives the longest delay you can reasonably expect to occur.
Only the unluckiest 15 percent of flights experience longer delays.
Current weather is 31.0 F (-0.6 C) and Overcast with Haze, 82% humidity, and 6.00 miles visibility at CHICAGO OHARE INTL AP, US, IL as of Tue, 07 Feb 2012 02:51:00 -0600.