Route · IAH → ATL · 2020–2025 BTS data
Houston to Atlanta
The IAH–ATL corridor (Houston, TX → Atlanta, GA) runs ahead of the national average, served by 34 carriers across roughly 689 miles.
Data updated 2026-06-13
- 80.8%
- On-time
- +1.8 pts
- vs US avg
- 74 min
- Delay when late
- 26,071
- Flights
Cancelled
1.7%
Best Month
Sep 2025 91%
Worst Month
May 2024 59%
Distance
689 mi
Carriers
34
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 367 | 78 | 11 | 0 | DL,F9,NK,UA |
| Nov 2025 | 401 | 79 | 10 | 0 | UA,DL,F9,NK |
| Oct 2025 | 438 | 86 | 1 | 0 | DL,UA,F9,NK |
| Sep 2025 | 384 | 34 | 1 | 0 | UA,DL,NK,F9 |
| Aug 2025 | 379 | 76 | 5 | 0 | F9,NK,UA,DL |
| Jul 2025 | 413 | 114 | 6 | 1 | DL,NK,UA,F9 |
| Jun 2025 | 390 | 139 | 12 | 1 | DL,UA,F9,NK |
| May 2025 | 395 | 120 | 3 | 0 | DL,NK,UA,F9 |
| Apr 2025 | 343 | 73 | 4 | 4 | DL,F9,NK,UA |
| Mar 2025 | 366 | 81 | 0 | 1 | DL,NK,UA,F9 |
| Feb 2025 | 316 | 61 | 0 | 0 | DL,UA,F9,NK |
| Jan 2025 | 323 | 58 | 27 | 0 | OO,UA,NK,DL,F9 |
| Dec 2024 | 375 | 96 | 2 | 0 | DL,F9,NK,OO,UA |
| Nov 2024 | 402 | 70 | 2 | 0 | OO,UA,NK,DL,F9 |
| Oct 2024 | 422 | 58 | 2 | 0 | UA,OO,DL,NK,F9 |
| Sep 2024 | 381 | 73 | 7 | 0 | NK,OO,UA,DL,F9 |
| Aug 2024 | 418 | 85 | 8 | 0 | DL,F9,NK,OO,UA |
| Jul 2024 | 386 | 142 | 41 | 3 | DL,F9,NK,UA |
| Jun 2024 | 399 | 116 | 3 | 0 | DL,F9,NK,UA |
| May 2024 | 400 | 164 | 4 | 1 | DL,F9,NK,UA |
| Apr 2024 | 357 | 89 | 1 | 0 | DL,F9,NK,UA |
| Mar 2024 | 375 | 66 | 0 | 0 | DL,F9,NK,UA |
| Feb 2024 | 318 | 45 | 0 | 0 | DL,F9,NK,UA |
| Jan 2024 | 334 | 77 | 4 | 1 | DL,F9,NK,UA |
Cancellation Rate
1.7%
154 of 9,082 flights
Diversion Rate
0.1%
12 of 9,082 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 →ATL - Atlanta
Full on-time, delay-cause, and seasonal performance for Atlanta, GA.
Destination airport →Compare the two airports
See IAH and ATL 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–ATL.
Routes with a similar on-time rate
What the Data Says About IAH to ATL
26,071 tracked flights put the IAH to ATL pairing (Houston to Atlanta) at a 80.8% on-time rate, squarely in line with the wider network. Delays that do occur run 74.1 minutes on average. Across the 689-mile route and its 34 carriers, the trailing 24 months show 1.7% cancelled and 0.1% diverted (9,082 flights sampled).
The monthly split is wide on this route: Sep 2025 posted the strongest performance at 91% on-time, while May 2024 came in at just 59% - a 32-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.