Route · IAH → MIA · 2020–2025 BTS data
Houston to Miami
The IAH–MIA corridor (Houston, TX → Miami, FL) runs behind the national average, served by 34 carriers across roughly 964 miles.
Data updated 2026-06-13
- 78%
- On-time
- -1 pts
- vs US avg
- 85 min
- Delay when late
- 18,069
- Flights
Cancelled
2.1%
Best Month
Oct 2024 89%
Worst Month
May 2024 60%
Distance
964 mi
Carriers
34
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 339 | 59 | 1 | 1 | F9,NK,AA,MQ,UA |
| Nov 2025 | 333 | 61 | 5 | 0 | UA,F9,MQ,NK,AA,YX |
| Oct 2025 | 304 | 49 | 1 | 0 | AA,UA,F9,MQ,NK |
| Sep 2025 | 276 | 52 | 1 | 0 | MQ,UA,NK,F9,AA |
| Aug 2025 | 300 | 82 | 2 | 4 | AA,F9,MQ,NK,UA |
| Jul 2025 | 312 | 102 | 8 | 2 | AA,NK,UA,F9 |
| Jun 2025 | 305 | 78 | 7 | 4 | AA,NK,UA,F9 |
| May 2025 | 348 | 102 | 5 | 3 | AA,NK,UA,F9,MQ |
| Apr 2025 | 314 | 56 | 3 | 0 | F9,MQ,NK,UA,AA |
| Mar 2025 | 339 | 84 | 4 | 1 | AA,UA,NK,F9,MQ |
| Feb 2025 | 274 | 66 | 0 | 0 | AA,UA,F9,MQ,NK |
| Jan 2025 | 323 | 65 | 15 | 1 | AA,UA,F9,MQ,NK |
| Dec 2024 | 328 | 99 | 3 | 1 | AA,F9,MQ,NK,UA |
| Nov 2024 | 304 | 53 | 1 | 0 | UA,MQ,NK,AA |
| Oct 2024 | 260 | 29 | 3 | 0 | UA,MQ,NK,AA |
| Sep 2024 | 253 | 41 | 0 | 2 | UA,AA,MQ,NK |
| Aug 2024 | 293 | 83 | 8 | 1 | AA,MQ,NK,UA |
| Jul 2024 | 274 | 102 | 29 | 0 | AA,MQ,NK,UA |
| Jun 2024 | 270 | 97 | 13 | 2 | AA,MQ,NK,UA |
| May 2024 | 300 | 120 | 8 | 2 | AA,MQ,NK,UA |
| Apr 2024 | 261 | 50 | 1 | 0 | AA,MQ,NK,UA |
| Mar 2024 | 288 | 93 | 9 | 2 | AA,MQ,NK,UA |
| Feb 2024 | 255 | 59 | 0 | 0 | AA,MQ,NK,UA |
| Jan 2024 | 263 | 84 | 22 | 0 | AA,MQ,NK,UA |
Cancellation Rate
2.1%
149 of 7,116 flights
Diversion Rate
0.4%
26 of 7,116 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 →MIA - Miami
Full on-time, delay-cause, and seasonal performance for Miami, FL.
Destination airport →Compare the two airports
See IAH and MIA 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–MIA.
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Routes of a similar trip length
What the Data Says About IAH to MIA
The Houston to Miami corridor (IAH to MIA) posts a 78% on-time rate on the lower edge of the average band, based on 18,069 tracked flights. Late flights run 84.8 minutes behind on average. 34 carriers cover the 964-mile route; over the last 24 months, 149 of 7,116 flights were cancelled (2.1%) and 0.4% diverted.
The monthly split is wide on this route: Oct 2024 posted the strongest performance at 89% on-time, while May 2024 came in at just 60% - 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.