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Based on 8448 flights from 05/01/2008 to 05/31/2009
| 63% |
On Time |
| 12% |
5-20 min. Delay |
| 21% |
>20 min. Delay |
| 4% |
Cancelled/Diverted |
|
|
Average (median) |
Be Prepared For (85th percentile) |
Cancelled or diverted |
| In Good Weather... |
5 min. early |
17 min. late |
2% |
| In Bad Weather... |
2 min. late |
47 min. late |
6% |
| In Fog... (6%) |
17 min. late |
92 min. late |
15% |
| In Rain... (39%) |
2 min. late |
49 min. late |
5% |
| In Snow... (19%) |
1 min. late |
46 min. late |
7% |
| In Thunder... (13%) |
8 min. late |
65 min. late |
8% |
“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 41.0 F (5.0 C) and Overcast, 86% humidity, and 10.00 miles visibility at CHICAGO OHARE INTL AP, US, IL as of Sun, 14 Mar 2010 04:51:00 -0500.
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