Route · PHL → IAH · 2020–2025 BTS data
Philadelphia to Houston
The PHL–IAH corridor (Philadelphia, PA → Houston, TX) runs ahead of the national average, served by 38 carriers across roughly 1,325 miles.
Data updated 2026-06-13
- 81.9%
- On-time
- +2.9 pts
- vs US avg
- 77 min
- Delay when late
- 10,258
- Flights
Cancelled
2.3%
Best Month
Oct 2024 91%
Worst Month
May 2024 66%
Distance
1,325 mi
Carriers
38
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 157 | 33 | 2 | 1 | OH,F9,AA,UA |
| Nov 2025 | 150 | 20 | 2 | 0 | UA,F9,OH,AA |
| Oct 2025 | 161 | 24 | 1 | 0 | AA,OH,UA |
| Sep 2025 | 137 | 26 | 0 | 0 | UA,OH,AA |
| Aug 2025 | 142 | 44 | 2 | 0 | AA,NK,UA |
| Jul 2025 | 151 | 48 | 6 | 0 | AA,NK,UA |
| Jun 2025 | 161 | 51 | 6 | 4 | AA,UA,NK |
| May 2025 | 148 | 42 | 3 | 0 | AA,OH,UA,NK |
| Apr 2025 | 131 | 23 | 0 | 1 | OH,UA,AA |
| Mar 2025 | 123 | 16 | 1 | 1 | AA,OH,UA |
| Feb 2025 | 104 | 16 | 3 | 3 | AA,OH,UA |
| Jan 2025 | 105 | 32 | 4 | 0 | AA,OH,UA,NK |
| Dec 2024 | 163 | 36 | 2 | 1 | AA,NK,OH,UA |
| Nov 2024 | 140 | 13 | 0 | 1 | UA,NK,OH,AA |
| Oct 2024 | 174 | 16 | 0 | 0 | UA,YX,NK,AA |
| Sep 2024 | 175 | 24 | 0 | 0 | YX,UA,AA,NK |
| Aug 2024 | 231 | 58 | 9 | 1 | AA,NK,UA |
| Jul 2024 | 227 | 76 | 30 | 0 | AA,NK,UA |
| Jun 2024 | 216 | 59 | 5 | 5 | AA,NK,UA |
| May 2024 | 206 | 70 | 6 | 6 | AA,NK,UA,YX |
| Apr 2024 | 190 | 32 | 0 | 0 | AA,NK,UA,YX |
| Mar 2024 | 167 | 29 | 0 | 1 | AA,UA,NK |
| Feb 2024 | 141 | 16 | 0 | 0 | AA,NK,UA |
| Jan 2024 | 133 | 28 | 7 | 0 | AA,NK,UA |
Cancellation Rate
2.3%
89 of 3,833 flights
Diversion Rate
0.7%
25 of 3,833 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
PHL - Philadelphia
Full on-time, delay-cause, and seasonal performance for Philadelphia, PA.
Origin airport →IAH - Houston
Full on-time, delay-cause, and seasonal performance for Houston, TX.
Destination airport →Compare the two airports
See PHL and IAH side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to PHL–IAH.
Routes with a similar on-time rate
What the Data Says About PHL to IAH
10,258 tracked flights put the PHL to IAH pairing (Philadelphia to Houston) at a 81.9% on-time rate, squarely in line with the wider network. Delays that do occur run 77.1 minutes on average. Across the 1,325-mile route and its 38 carriers, the trailing 24 months show 2.3% cancelled and 0.7% diverted (3,833 flights sampled).
The monthly split is wide on this route: Oct 2024 posted the strongest performance at 91% on-time, while May 2024 came in at just 66% - a 25-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.