Best Time to Fly ORD to PHL
Chicago to Philadelphia — month-by-month delay data from the Bureau of Transportation Statistics.
Best month
January
1% on time
Worst month
January
1% on time
ORD → PHL on-time performance by month
24
25
26
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
Monthly breakdown
| Month | On-time | Cancel rate | Flights |
|---|---|---|---|
| January | 1% | 0% | 1,218 |
| February | 1% | 0% | 1,201 |
| March | 1% | 0% | 1,356 |
| April | 1% | 0% | 1,474 |
| May | 1% | 0% | 1,672 |
| June | 1% | 0% | 1,699 |
| July | 1% | 0% | 1,741 |
| August | 1% | 0% | 1,315 |
| September | 1% | 0% | 1,220 |
| October | 1% | 0% | 1,210 |
| November | 1% | 0% | 1,047 |
| December | 1% | 0% | 959 |
Frequently asked
What is the best month to fly from ORD to PHL?
January has the highest on-time rate at 1% for flights from Chicago to Philadelphia.
What is the worst month to fly ORD to PHL?
January has the lowest on-time rate at 1%, often due to winter weather.
How often are ORD to PHL flights delayed?
On average, 1% of flights from ORD to PHL arrive on time. That means about 99% experience some form of delay.
Source: Bureau of Transportation Statistics.