Carrier route record
UAMAF→IAH
United Airlines · Midland to Houston
- Flights
- 452
- Period
- September 2025 to August 2026
- Share of route
- 63%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with United Airlines.
United on MAF to IAH lands a B+, 3 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by about an hour on average. That rests on 452 flights, with a median arrival 1 minute early.
The US average over the same twelve months is 77.3%, so there is little to separate United on MAF to IAH from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
80.1%
Arrivals under 15 minutes late, of 448 completed flights
Avg delay
65 min
Across delayed arrivals only, not all flights
Cancelled
0.88%
National rate is 1.89%
Whole route
82.3%
Every carrier on MAF to IAH, 717 flights
These figures cover 452 flights between September 2025 and August 2026. On-time means an arrival less than 15 minutes after the scheduled gate time, the same threshold the Department of Transportation uses in its own reports. Cancelled and diverted flights are excluded from the on-time rate and counted separately, which is why the cancellation column matters on its own.
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Carrier by carrier
United against every carrier on MAF to IAH
United flew 452 of the 717 flights on MAF to IAH, most of the route. Its 80.1% on time is 2 points worse than the route as a whole, which runs 82.3%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from SkyWest at 85.9% to United at 80.1%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| SkyWest Airlinesthin sample | 265 | 85.9% | 70 min | 0.00% | A+ |
| United Airlines (this page) | 452 | 80.1% | 65 min | 0.88% | B+ |
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Departure window
When United runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 13 points, against half a point between the best and worst carrier.
- 5am–8am343 flights78.5%
- 8am–11am47 flights91.5%
- 11am–2pm—
- 2pm–5pm4 flights—
- 5pm–8pm58 flights81.0%
- 8pm–5am—
Scale runs 70% to 95%. Rows with fewer than 30 flights show a dash.
Book the morning departure. Flights leaving between 8am–11am arrive on time 91.5% of the time, against 78.5% for the early window. That is 13 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5am–8am window is the busiest, with 343 flights scheduled in it.
Across the year
United on MAF to IAH through the year
July is the worst month at 60.0% on time, 31 points below August, the best at 91.2%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. October was the busiest month here, with 58 flights.
Across the week, Saturday is the strongest day at 87.5% on time and Tuesday the weakest at 75.0%, a spread of 13 points.
Arrival by arrival
How late United on MAF to IAH runs when it is late
The 89 late arrivals split 39 under half an hour, 27 between 30 and 60 minutes, and 23 an hour or more.
- 15+ min early30 flights6.7%
- Within 15 min329 flights73.4%
- 15–29 min late39 flights8.7%
- 30–59 min late27 flights6.0%
- 1–2 hours late13 flights2.9%
- 2+ hours late10 flights2.2%
Scale runs 0% to 100%.
Share of 448 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 61 departures that left 15 minutes late or more, only 4 made it up before arrival. In the other direction, 32 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at IAH.
The worst days
Worst days for United on MAF to IAH
The latest arrival of the period was on 13 January 2026, 12 hours 32 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 13 January 2026 | 12 hours 32 minutes | Carrier |
| 6 July 2026 | 6 hours 6 minutes | Late-arriving aircraft |
| 8 December 2025 | 4 hours 31 minutes | Carrier |
| 9 June 2026 | 4 hours 11 minutes | National Airspace System |
| 22 April 2026 | 3 hours 45 minutes | Carrier |
Delay causes
Why United runs late on this route
Carrier accounts for 46% of the 5,774 delay minutes carriers reported here, and the remaining four split what is left.
- 46%Carrier
- 38%National Airspace System
- 13%Late-arriving aircraft
- 3%Extreme weather
The largest share of delay minutes, 46%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,649 of the 5,774 delay minutes reported here. The split is drawn from 5,774 reported delay minutes.
38% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 2,221 minutes out of 5,774, against a national NAS share of 21%.
Cancellations are rare at 0.88%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and stage length
What a delay here costs
5.1% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.
At 429 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 8am–11am window matters as much as it does.
The return leg runs 79.4% on time across 452 flights, within half a point of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
One caution: this is a thin sample. 452 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking United on MAF to IAH
Put together: treat all of this as provisional. 452 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 80.1% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 448 completed flights over 12 months sit behind that.
Related
Where to go next
- MAF to IAH, every carrier
- United on IAH to MAF, the return leg
- SkyWest Airlines on MAF to IAH85.9%
- United Airlines network-wide record
- George Bush Intercontinental (IAH) delay statistics
- The best time of day to fly, according to 7.05 million flight records
- Worst months to fly in the US, ranked by the data
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.