Best Time to Fly ORD to STL
Chicago to St. Louis — month-by-month delay data from the Bureau of Transportation Statistics.
Best month
January
1% on time
Worst month
January
1% on time
ORD → STL on-time performance by month
24
25
26
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
Monthly breakdown
| Month | On-time | Cancel rate | Flights |
|---|---|---|---|
| January | 1% | 0.1% | 640 |
| February | 1% | 0% | 676 |
| March | 1% | 0% | 859 |
| April | 1% | 0% | 992 |
| May | 1% | 0% | 1,001 |
| June | 1% | 0% | 1,006 |
| July | 1% | 0% | 1,034 |
| August | 1% | 0% | 718 |
| September | 1% | 0% | 630 |
| October | 1% | 0% | 656 |
| November | 1% | 0% | 582 |
| December | 1% | 0% | 546 |
Frequently asked
What is the best month to fly from ORD to STL?
January has the highest on-time rate at 1% for flights from Chicago to St. Louis.
What is the worst month to fly ORD to STL?
January has the lowest on-time rate at 1%, often due to winter weather.
How often are ORD to STL flights delayed?
On average, 1% of flights from ORD to STL arrive on time. That means about 99% experience some form of delay.
Source: Bureau of Transportation Statistics.