Best Time to Fly ORD to IAH
Chicago to Houston — month-by-month delay data from the Bureau of Transportation Statistics.
Best month
January
1% on time
Worst month
January
1% on time
ORD → IAH on-time performance by month
24
25
26
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
Monthly breakdown
| Month | On-time | Cancel rate | Flights |
|---|---|---|---|
| January | 1% | 0% | 1,631 |
| February | 1% | 0% | 1,441 |
| March | 1% | 0% | 1,703 |
| April | 1% | 0% | 1,743 |
| May | 1% | 0% | 1,929 |
| June | 1% | 0% | 1,907 |
| July | 1% | 0% | 1,959 |
| August | 1% | 0% | 1,430 |
| September | 1% | 0% | 1,381 |
| October | 1% | 0% | 1,383 |
| November | 1% | 0% | 1,281 |
| December | 1% | 0% | 1,376 |
Frequently asked
What is the best month to fly from ORD to IAH?
January has the highest on-time rate at 1% for flights from Chicago to Houston.
What is the worst month to fly ORD to IAH?
January has the lowest on-time rate at 1%, often due to winter weather.
How often are ORD to IAH flights delayed?
On average, 1% of flights from ORD to IAH arrive on time. That means about 99% experience some form of delay.
Source: Bureau of Transportation Statistics.