Route · IAH → PIT · 2020–2025 BTS data
Houston to Pittsburgh
The IAH–PIT corridor (Houston, TX → Pittsburgh, PA) runs ahead of the national average, served by 14 carriers across roughly 1,117 miles.
Data updated 2026-06-13
- 82.4%
- On-time
- +3.4 pts
- vs US avg
- 73 min
- Delay when late
- 4,770
- Flights
Cancelled
1.3%
Best Month
Nov 2023 92%
Worst Month
May 2024 64%
Distance
1,117 mi
Carriers
14
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 75 | 9 | 0 | 0 | UA |
| Nov 2025 | 77 | 13 | 0 | 0 | UA |
| Oct 2025 | 66 | 10 | 0 | 0 | UA |
| Sep 2025 | 49 | 11 | 0 | 0 | UA |
| Aug 2025 | 48 | 15 | 0 | 0 | OO,UA |
| Jul 2025 | 48 | 21 | 0 | 0 | OO,UA |
| Jun 2025 | 49 | 20 | 2 | 0 | OO,UA |
| May 2025 | 57 | 14 | 0 | 0 | UA |
| Apr 2025 | 30 | 9 | 0 | 0 | UA |
| Mar 2025 | 35 | 6 | 0 | 0 | UA |
| Feb 2025 | 49 | 8 | 0 | 0 | UA,NK |
| Jan 2025 | 49 | 5 | 1 | 0 | UA |
| Dec 2024 | 57 | 12 | 1 | 0 | OO,UA |
| Nov 2024 | 53 | 5 | 0 | 0 | UA |
| Oct 2024 | 58 | 5 | 0 | 0 | UA |
| Sep 2024 | 58 | 8 | 1 | 0 | UA,NK |
| Aug 2024 | 82 | 21 | 1 | 0 | NK,UA |
| Jul 2024 | 83 | 26 | 10 | 1 | NK,UA |
| Jun 2024 | 76 | 17 | 1 | 0 | NK,UA |
| May 2024 | 56 | 20 | 1 | 0 | UA |
| Jan 2024 | 38 | 9 | 0 | 0 | UA |
| Dec 2023 | 60 | 7 | 0 | 0 | UA |
| Nov 2023 | 59 | 5 | 0 | 0 | UA |
| Oct 2023 | 81 | 11 | 0 | 0 | OO,UA |
Cancellation Rate
1.3%
18 of 1,393 flights
Diversion Rate
0.1%
1 of 1,393 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 →PIT - Pittsburgh
Full on-time, delay-cause, and seasonal performance for Pittsburgh, PA.
Destination airport →Compare the two airports
See IAH and PIT 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–PIT.
Routes with a similar on-time rate
What the Data Says About IAH to PIT
Bureau of Transportation Statistics records show Houston to Pittsburgh (IAH to PIT) running a 82.4% on-time rate over 4,770 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 73.3 minutes. The 1,117-mile corridor is served by 14 carriers, and over the last 24 months 1.3% of 1,393 flights were cancelled, 0.1% diverted.
The monthly split is wide on this route: Nov 2023 posted the strongest performance at 92% on-time, while May 2024 came in at just 64% - a 27-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.