Route · IAH → PHL · 2020–2025 BTS data
Houston to Philadelphia
The IAH–PHL corridor (Houston, TX → Philadelphia, PA) runs ahead of the national average, served by 42 carriers across roughly 1,325 miles.
Data updated 2026-06-13
- 82.7%
- On-time
- +3.7 pts
- vs US avg
- 99 min
- Delay when late
- 10,269
- Flights
Cancelled
2.2%
Best Month
Oct 2024 91%
Worst Month
Jul 2024 62%
Distance
1,325 mi
Carriers
42
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 157 | 22 | 3 | 0 | OH,F9,AA,UA |
| Nov 2025 | 150 | 25 | 2 | 0 | UA,F9,OH,AA |
| Oct 2025 | 161 | 36 | 0 | 0 | AA,OH,UA |
| Sep 2025 | 137 | 17 | 0 | 1 | UA,OH,AA |
| Aug 2025 | 143 | 36 | 5 | 0 | AA,NK,UA |
| Jul 2025 | 152 | 52 | 6 | 1 | AA,NK,UA |
| Jun 2025 | 160 | 50 | 5 | 0 | AA,UA,NK |
| May 2025 | 148 | 35 | 3 | 0 | AA,OH,UA,NK |
| Apr 2025 | 131 | 29 | 0 | 0 | OH,UA,AA |
| Mar 2025 | 123 | 24 | 2 | 0 | AA,OH,UA |
| Feb 2025 | 104 | 17 | 3 | 0 | AA,OH,UA |
| Jan 2025 | 104 | 10 | 4 | 0 | AA,OH,UA,NK |
| Dec 2024 | 163 | 28 | 2 | 1 | AA,NK,OH,UA |
| Nov 2024 | 140 | 16 | 0 | 0 | UA,NK,OH,AA |
| Oct 2024 | 174 | 16 | 0 | 0 | UA,YX,NK,AA |
| Sep 2024 | 174 | 17 | 1 | 0 | YX,UA,AA,NK |
| Aug 2024 | 231 | 72 | 8 | 2 | AA,NK,UA |
| Jul 2024 | 226 | 85 | 29 | 1 | AA,NK,UA |
| Jun 2024 | 216 | 63 | 2 | 1 | AA,NK,UA |
| May 2024 | 207 | 70 | 5 | 0 | AA,NK,UA,YX |
| Apr 2024 | 190 | 30 | 0 | 0 | AA,NK,UA,YX |
| Mar 2024 | 167 | 21 | 0 | 0 | AA,UA,NK |
| Feb 2024 | 141 | 16 | 0 | 0 | AA,NK,UA |
| Jan 2024 | 134 | 24 | 6 | 1 | AA,NK,UA |
Cancellation Rate
2.2%
86 of 3,833 flights
Diversion Rate
0.2%
8 of 3,833 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
IAH - Houston
Full on-time, delay-cause, and seasonal performance for Houston, TX.
Origin airport →PHL - Philadelphia
Full on-time, delay-cause, and seasonal performance for Philadelphia, PA.
Destination airport →Compare the two airports
See IAH and PHL side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to IAH–PHL.
Routes with a similar on-time rate
What the Data Says About IAH to PHL
Bureau of Transportation Statistics records show Houston to Philadelphia (IAH to PHL) running a 82.7% on-time rate over 10,269 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 99.0 minutes. The 1,325-mile corridor is served by 42 carriers, and over the last 24 months 2.2% of 3,833 flights were cancelled, 0.2% diverted.
The monthly split is wide on this route: Oct 2024 posted the strongest performance at 91% on-time, while Jul 2024 came in at just 62% - a 28-point swing worth factoring into travel timing.
Frequently Asked Questions
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Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.