Route · ATL → IAH · 2020–2025 BTS data
Atlanta to Houston
The ATL–IAH corridor (Atlanta, GA → Houston, TX) runs ahead of the national average, served by 37 carriers across roughly 689 miles.
Data updated 2026-06-13
- 79.5%
- On-time
- +0.5 pts
- vs US avg
- 70 min
- Delay when late
- 26,083
- Flights
Cancelled
1.7%
Best Month
Oct 2024 87%
Worst Month
Jun 2025 60%
Distance
689 mi
Carriers
37
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 369 | 96 | 11 | 1 | DL,F9,NK,UA |
| Nov 2025 | 402 | 72 | 8 | 0 | UA,DL,F9,NK |
| Oct 2025 | 439 | 92 | 2 | 1 | DL,UA,F9,NK |
| Sep 2025 | 384 | 53 | 1 | 0 | UA,DL,NK,F9 |
| Aug 2025 | 380 | 102 | 4 | 0 | F9,NK,UA,DL |
| Jul 2025 | 414 | 142 | 9 | 1 | DL,NK,UA,F9 |
| Jun 2025 | 390 | 156 | 13 | 4 | UA,DL,F9,NK |
| May 2025 | 396 | 152 | 3 | 2 | NK,UA,DL,F9 |
| Apr 2025 | 343 | 85 | 3 | 1 | DL,F9,NK,UA |
| Mar 2025 | 365 | 78 | 1 | 0 | DL,NK,UA,F9 |
| Feb 2025 | 315 | 71 | 0 | 0 | DL,UA,F9,NK |
| Jan 2025 | 323 | 92 | 24 | 2 | OO,UA,NK,DL,F9 |
| Dec 2024 | 374 | 107 | 2 | 3 | DL,F9,NK,OO,UA |
| Nov 2024 | 399 | 68 | 2 | 1 | OO,UA,NK,DL,F9 |
| Oct 2024 | 421 | 53 | 0 | 0 | UA,OO,DL,NK,F9 |
| Sep 2024 | 378 | 75 | 8 | 0 | NK,OO,UA,DL,F9 |
| Aug 2024 | 423 | 89 | 8 | 0 | DL,F9,NK,OO,UA |
| Jul 2024 | 395 | 146 | 40 | 1 | DL,F9,NK,UA |
| Jun 2024 | 402 | 111 | 4 | 4 | DL,F9,NK,UA |
| May 2024 | 399 | 139 | 4 | 7 | DL,F9,NK,UA |
| Apr 2024 | 356 | 65 | 0 | 3 | DL,F9,NK,UA |
| Mar 2024 | 373 | 71 | 2 | 2 | DL,F9,NK,UA |
| Feb 2024 | 319 | 51 | 0 | 0 | DL,F9,NK,UA |
| Jan 2024 | 333 | 79 | 6 | 1 | DL,F9,NK,UA |
Cancellation Rate
1.7%
155 of 9,092 flights
Diversion Rate
0.4%
34 of 9,092 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
ATL - Atlanta
Full on-time, delay-cause, and seasonal performance for Atlanta, GA.
Origin airport →IAH - Houston
Full on-time, delay-cause, and seasonal performance for Houston, TX.
Destination airport →Compare the two airports
See ATL 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 ATL–IAH.
Routes with a similar on-time rate
What the Data Says About ATL to IAH
26,083 tracked flights put the ATL to IAH pairing (Atlanta to Houston) at a 79.5% on-time rate, squarely in line with the wider network. Delays that do occur run 70.1 minutes on average. Across the 689-mile route and its 37 carriers, the trailing 24 months show 1.7% cancelled and 0.4% diverted (9,092 flights sampled).
The monthly split is wide on this route: Oct 2024 posted the strongest performance at 87% on-time, while Jun 2025 came in at just 60% - 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.