Based on 6994 flights from 01/01/2010 to 12/31/2010
62%
On Time
9%
5-20 min. Delay
24%
>20 min. Delay
5%
Cancelled/Diverted
Average
(median)
Be Prepared For
(85th percentile)
Cancelled
or diverted
In Good Weather...
8 min. early
41 min. late
4%
In Bad Weather...
3 min. early
56 min. late
7%
In Fog... (5%)
13 min. late
95 min. late
27%
In Rain... (32%)
3 min. early
59 min. late
5%
In Snow... (14%)
1 min. early
52 min. late
12%
In Thunder... (11%)
on time
75 min. late
7%
“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.