Route · MIA → IAH · 2020–2025 BTS data
Miami to Houston
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), MIA to IAH (Miami to Houston) ranks #427 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 76.5%
- On-time
- -2.5 pts
- vs US avg
- 80 min
- Delay when late
- 18,068
- Flights
- #427 of 4927
- Corpus placement
Cancelled
2.0%
Best Month
Oct 2024 87%
Worst Month
May 2024 58%
Distance
964 mi
Carriers
36
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 340 | 60 | 0 | 2 | F9,NK,AA,MQ,UA |
| Nov 2025 | 332 | 68 | 5 | 0 | UA,F9,MQ,NK,AA,YX |
| Oct 2025 | 304 | 60 | 1 | 0 | AA,UA,F9,MQ,NK |
| Sep 2025 | 276 | 53 | 0 | 0 | MQ,UA,NK,F9,AA |
| Aug 2025 | 300 | 98 | 3 | 0 | AA,F9,MQ,NK,UA |
| Jul 2025 | 311 | 96 | 7 | 1 | AA,NK,UA,F9 |
| Jun 2025 | 304 | 94 | 7 | 0 | AA,UA,F9,NK |
| May 2025 | 348 | 118 | 3 | 2 | AA,NK,UA,F9,MQ |
| Apr 2025 | 315 | 60 | 3 | 0 | F9,MQ,NK,UA,AA |
| Mar 2025 | 340 | 95 | 5 | 1 | AA,UA,NK,F9,MQ |
| Feb 2025 | 274 | 70 | 0 | 1 | AA,UA,F9,MQ,NK |
| Jan 2025 | 322 | 89 | 15 | 1 | AA,UA,F9,MQ,NK |
| Dec 2024 | 329 | 86 | 3 | 2 | AA,F9,MQ,NK,UA |
| Nov 2024 | 305 | 39 | 3 | 0 | UA,MQ,NK,AA |
| Oct 2024 | 259 | 33 | 3 | 1 | UA,MQ,NK,AA |
| Sep 2024 | 255 | 52 | 0 | 0 | UA,AA,MQ,NK |
| Aug 2024 | 293 | 88 | 8 | 1 | AA,MQ,NK,UA |
| Jul 2024 | 274 | 94 | 23 | 1 | AA,MQ,NK,UA |
| Jun 2024 | 271 | 102 | 12 | 1 | AA,MQ,NK,UA |
| May 2024 | 300 | 127 | 9 | 3 | AA,MQ,NK,UA |
| Apr 2024 | 261 | 53 | 1 | 0 | AA,MQ,NK,UA |
| Mar 2024 | 288 | 116 | 8 | 1 | AA,MQ,NK,UA |
| Feb 2024 | 258 | 57 | 0 | 0 | AA,MQ,NK,UA |
| Jan 2024 | 263 | 98 | 23 | 1 | AA,MQ,NK,UA |
MIA–IAH seasonal on-time pattern
Best: November (83.2%) · weakest: June (66.8%)
Strongest calendar month
November
83.2% on-time · ~252 flights/mo
Busiest calendar month
March
~288 flights/mo avg
Weakest calendar month
June
66.8% on-time · ~249 flights/mo
Cancellation Rate
2.0%
142 of 7,122 flights
Diversion Rate
0.3%
19 of 7,122 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
MIA - Miami
Full on-time, delay-cause, and seasonal performance for Miami, FL.
MIA on-time profileIAH - Houston
Full on-time, delay-cause, and seasonal performance for Houston, TX.
IAH on-time profileCompare the two airports
See MIA and IAH side by side on delays, cancellations, and reliability.
Compare MIA vs IAHOrigin-hub reliability standing
Mid-pack among MIA departures
From MIA, this corridor sits with 37 other 75–85% on-time routes out of 63 tracked departures, not the hub's reliability leaders (1 at ≥85%) and not the softest ( 25 below 75%). Destination: Houston · fleet on-time rank #4207 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to MIA–IAH.
Routes with a similar on-time rate
Routes of a similar trip length
What the Data Says About MIA to IAH
The Miami to Houston corridor (MIA to IAH) posts a 76.5% on-time rate on the lower edge of the average band, based on 18,068 tracked flights. Late flights run 79.7 minutes behind on average. 36 carriers cover the 964-mile route; over the last 24 months, 142 of 7,122 flights were cancelled (2.0%) and 0.3% diverted.
The monthly split is wide on this route: Oct 2024 posted the strongest performance at 87% on-time, while May 2024 came in at just 58% - a 30-point swing worth factoring into travel timing.
On the multi-year calendar, MIA–IAH peaks in November at 83.2% on-time while March carries the heaviest traffic (~288 flights per month) ; the softest month is June at 66.8%, a 16.4-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does MIA to IAH rank among US routes by traffic? ▼
How often are flights delayed from MIA to IAH? ▼
What is the cancellation rate for MIA to IAH? ▼
How far is the flight from MIA to IAH? ▼
When is the best time to fly from MIA to IAH? ▼
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 MIA–IAH data
MIA–IAH is mid-pack at 76.5% on-time; month and carrier mix move more than the corridor headline.
- Compare MIA and IAH airport profiles: delay causes and top routes differ even on the same corridor. MIA airport
- If your dates flex, November (83.2% on-time) beats June (66.8%) on this corridor. Seasonal chart
- 4 other routes post a similar 76.5% 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.