Route · STL → HOU · 2020–2025 BTS data
St. Louis to Houston
The STL–HOU corridor (St. Louis, MO → Houston, TX) runs ahead of the national average, served by 1 carrier across roughly 687 miles.
Data updated 2026-06-13
- 81.9%
- On-time
- +2.9 pts
- vs US avg
- 58 min
- Delay when late
- 7,558
- Flights
Cancelled
1.0%
Best Month
Nov 2024 93%
Worst Month
Jul 2024 64%
Distance
687 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 138 | 41 | 0 | 0 | WN |
| Nov 2025 | 133 | 32 | 0 | 0 | WN |
| Oct 2025 | 123 | 23 | 0 | 0 | WN |
| Sep 2025 | 125 | 18 | 1 | 0 | WN |
| Aug 2025 | 130 | 26 | 1 | 1 | WN |
| Jul 2025 | 144 | 26 | 1 | 1 | WN |
| Jun 2025 | 139 | 38 | 2 | 1 | WN |
| May 2025 | 130 | 28 | 1 | 0 | WN |
| Apr 2025 | 125 | 24 | 0 | 0 | WN |
| Mar 2025 | 139 | 30 | 0 | 0 | WN |
| Feb 2025 | 109 | 13 | 0 | 0 | WN |
| Jan 2025 | 107 | 15 | 11 | 0 | WN |
| Dec 2024 | 135 | 20 | 1 | 2 | WN |
| Nov 2024 | 119 | 8 | 0 | 0 | WN |
| Oct 2024 | 135 | 19 | 0 | 1 | WN |
| Sep 2024 | 125 | 16 | 0 | 0 | WN |
| Aug 2024 | 129 | 30 | 0 | 1 | WN |
| Jul 2024 | 143 | 51 | 6 | 1 | WN |
| Jun 2024 | 139 | 39 | 1 | 1 | WN |
| May 2024 | 122 | 40 | 1 | 2 | WN |
| Apr 2024 | 121 | 30 | 0 | 0 | WN |
| Mar 2024 | 131 | 26 | 1 | 0 | WN |
| Feb 2024 | 120 | 17 | 0 | 0 | WN |
| Jan 2024 | 127 | 38 | 3 | 0 | WN |
Cancellation Rate
1.0%
30 of 3,088 flights
Diversion Rate
0.4%
11 of 3,088 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
STL - St. Louis
Full on-time, delay-cause, and seasonal performance for St. Louis, MO.
Origin airport →HOU - Houston
Full on-time, delay-cause, and seasonal performance for Houston, TX.
Destination airport →Compare the two airports
See STL and HOU side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to STL–HOU.
Routes with a similar on-time rate
What the Data Says About STL to HOU
7,558 tracked flights put the STL to HOU pairing (St. Louis to Houston) at a 81.9% on-time rate, squarely in line with the wider network. Delays that do occur run 57.8 minutes on average. Across the 687-mile route and its 1 carrier, the trailing 24 months show 1.0% cancelled and 0.4% diverted (3,088 flights sampled).
The monthly split is wide on this route: Nov 2024 posted the strongest performance at 93% on-time, while Jul 2024 came in at just 64% - a 29-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.