Best Time to Fly IAH to PHL
Houston 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
IAH → PHL on-time performance by month
24
25
26
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
Monthly breakdown
| Month | On-time | Cancel rate | Flights |
|---|---|---|---|
| January | 1% | 0% | 501 |
| February | 1% | 0% | 458 |
| March | 1% | 0% | 560 |
| April | 1% | 0% | 573 |
| May | 1% | 0% | 670 |
| June | 1% | 0% | 727 |
| July | 1% | 0.1% | 715 |
| August | 1% | 0% | 546 |
| September | 1% | 0% | 471 |
| October | 1% | 0% | 508 |
| November | 1% | 0% | 431 |
| December | 1% | 0% | 446 |
Frequently asked
What is the best month to fly from IAH to PHL?
January has the highest on-time rate at 1% for flights from Houston to Philadelphia.
What is the worst month to fly IAH to PHL?
January has the lowest on-time rate at 1%, often due to winter weather.
How often are IAH to PHL flights delayed?
On average, 1% of flights from IAH to PHL arrive on time. That means about 99% experience some form of delay.
Source: Bureau of Transportation Statistics.