Route · BWI → IAH · 2020–2025 BTS data
Baltimore to Houston
The BWI–IAH corridor (Baltimore, MD → Houston, TX) runs ahead of the national average, served by 13 carriers across roughly 1,235 miles.
Data updated 2026-06-13
- 83.9%
- On-time
- +4.9 pts
- vs US avg
- 78 min
- Delay when late
- 5,951
- Flights
Cancelled
1.3%
Best Month
Feb 2024 95%
Worst Month
Jul 2024 55%
Distance
1,235 mi
Carriers
13
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 104 | 26 | 0 | 0 | F9,NK,UA |
| Nov 2025 | 123 | 23 | 2 | 0 | OO,UA,F9,NK |
| Oct 2025 | 108 | 15 | 0 | 0 | UA,NK |
| Sep 2025 | 106 | 12 | 0 | 0 | UA,NK |
| Aug 2025 | 100 | 15 | 0 | 0 | NK,UA |
| Jul 2025 | 106 | 23 | 2 | 1 | NK,UA |
| Jun 2025 | 95 | 31 | 1 | 1 | UA,NK |
| May 2025 | 103 | 21 | 2 | 0 | UA,NK |
| Apr 2025 | 90 | 12 | 0 | 0 | NK,UA |
| Mar 2025 | 66 | 4 | 0 | 0 | UA,NK |
| Feb 2025 | 79 | 11 | 1 | 0 | UA,NK |
| Jan 2025 | 111 | 24 | 7 | 0 | UA,NK |
| Dec 2024 | 113 | 22 | 0 | 0 | NK,UA |
| Nov 2024 | 109 | 12 | 0 | 0 | UA,NK |
| Oct 2024 | 108 | 5 | 1 | 0 | UA,NK |
| Sep 2024 | 110 | 16 | 1 | 0 | UA,NK |
| Aug 2024 | 120 | 34 | 1 | 0 | NK,UA |
| Jul 2024 | 98 | 44 | 6 | 1 | NK,UA |
| Jun 2024 | 115 | 35 | 2 | 2 | NK,UA |
| May 2024 | 109 | 37 | 1 | 4 | NK,UA |
| Apr 2024 | 101 | 31 | 0 | 0 | NK,UA |
| Mar 2024 | 62 | 8 | 1 | 0 | NK,UA |
| Feb 2024 | 65 | 3 | 0 | 0 | NK,UA |
| Jan 2024 | 72 | 11 | 2 | 1 | NK,UA |
Cancellation Rate
1.3%
30 of 2,373 flights
Diversion Rate
0.4%
10 of 2,373 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
BWI - Baltimore
Full on-time, delay-cause, and seasonal performance for Baltimore, MD.
Origin airport →IAH - Houston
Full on-time, delay-cause, and seasonal performance for Houston, TX.
Destination airport →Compare the two airports
See BWI 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 BWI–IAH.
Routes with a similar on-time rate
What the Data Says About BWI to IAH
Bureau of Transportation Statistics records show Baltimore to Houston (BWI to IAH) running a 83.9% on-time rate over 5,951 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 77.7 minutes. The 1,235-mile corridor is served by 13 carriers, and over the last 24 months 1.3% of 2,373 flights were cancelled, 0.4% diverted.
The monthly split is wide on this route: Feb 2024 posted the strongest performance at 95% on-time, while Jul 2024 came in at just 55% - a 40-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.