Route · IAH → MIA · 2020–2025 BTS data
Houston to Miami
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), IAH to MIA (Houston to Miami) ranks #426 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 78%
- On-time
- -1 pts
- vs US avg
- 85 min
- Delay when late
- 18,069
- Flights
- #426 of 4927
- Corpus placement
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 |
IAH–MIA seasonal on-time pattern
Best: October (84.9%) · weakest: June (69.7%)
Strongest calendar month
October
84.9% on-time · ~244 flights/mo
Busiest calendar month
March
~287 flights/mo avg
Weakest calendar month
June
69.7% on-time · ~249 flights/mo
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.
IAH on-time profileMIA - Miami
Full on-time, delay-cause, and seasonal performance for Miami, FL.
MIA on-time profileCompare the two airports
See IAH and MIA side by side on delays, cancellations, and reliability.
Compare IAH vs MIAOrigin-hub reliability standing
Mid-pack among IAH departures
From IAH, this corridor sits with 79 other 75–85% on-time routes out of 102 tracked departures, not the hub's reliability leaders (17 at ≥85%) and not the softest ( 6 below 75%). Destination: Miami · fleet on-time rank #3841 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to IAH–MIA.
Routes with a similar on-time rate
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.
On the multi-year calendar, IAH–MIA peaks in October at 84.9% on-time while March carries the heaviest traffic (~287 flights per month) ; the softest month is June at 69.7%, a 15.2-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does IAH to MIA rank among US routes by traffic? ▼
How often are flights delayed from IAH to MIA? ▼
What is the cancellation rate for IAH to MIA? ▼
How far is the flight from IAH to MIA? ▼
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Airports on this route
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.
Using IAH–MIA data
IAH–MIA is mid-pack at 78% on-time; month and carrier mix move more than the corridor headline.
- Compare IAH and MIA airport profiles: delay causes and top routes differ even on the same corridor. IAH airport
- If your dates flex, October (84.9% on-time) beats June (69.7%) on this corridor. Seasonal chart
- 4 other routes post a similar 78% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
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.