Carrier route record
UAIAH→MAF
United Airlines · Houston to Midland
- 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 IAH to MAF lands a B+, 2 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 10 minutes early.
The US average over the same twelve months is 77.3%, so there is little to separate United on IAH to MAF from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
79.4%
Arrivals under 15 minutes late, of 447 completed flights
Avg delay
58 min
Across delayed arrivals only, not all flights
Cancelled
0.66%
National rate is 1.89%
Whole route
80.8%
Every carrier on IAH to MAF, 720 flights
These figures cover 452 flights between September 2025 and August 2026. The median arrival is 10 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Carrier by carrier
United against every carrier on IAH to MAF
United flew 452 of the 720 flights on IAH to MAF, most of the route. Its 79.4% on time is about level with the route as a whole at 80.8%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from SkyWest at 83.2% to United at 79.4%. 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 | 268 | 83.2% | 65 min | 0.00% | B+ |
| United Airlines (this page) | 452 | 79.4% | 58 min | 0.66% | B+ |
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
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 18 points, against half a point between the best and worst carrier.
- 5am–8am46 flights93.3%
- 8am–11am—
- 11am–2pm4 flights—
- 2pm–5pm58 flights89.7%
- 5pm–8pm1 flights—
- 8pm–5am343 flights75.5%
Scale runs 65% to 100%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 93.3% of the time, against 75.5% for the overnight window. That is 18 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 8pm–5am window is the busiest, with 343 flights scheduled in it.
Across the year
United on IAH to MAF through the year
June is the worst month at 53.3% on time, 35 points below January, the best at 88.2%. 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, Wednesday is the strongest day at 84.1% on time and Sunday the weakest at 73.0%, a spread of 11 points.
Arrival by arrival
How late United on IAH to MAF runs when it is late
United on IAH to MAF often beats the schedule: 157 of 447 completed flights, 35%, arrived 15 minutes or more early. The 92 late arrivals split 26 under half an hour, 31 between 30 and 60 minutes, and 35 an hour or more.
- 15+ min early157 flights35.1%
- Within 15 min198 flights44.3%
- 15–29 min late26 flights5.8%
- 30–59 min late31 flights6.9%
- 1–2 hours late28 flights6.3%
- 2+ hours late7 flights1.6%
Scale runs 0% to 100%.
Share of 447 completed flights by arrival against schedule.
17 of 100 late departures made up the time and arrived on time, 17% of them. 9 flights left on time and still arrived late.
The worst days
Worst days for United on IAH to MAF
The latest arrival of the period was on 25 October 2025, 2 hours 56 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 25 October 2025 | 2 hours 56 minutes | Late-arriving aircraft |
| 16 March 2026 | 2 hours 53 minutes | Carrier |
| 28 August 2026 | 2 hours 44 minutes | Late-arriving aircraft |
| 21 June 2026 | 2 hours 40 minutes | Late-arriving aircraft |
| 1 May 2026 | 2 hours 39 minutes | Late-arriving aircraft |
Delay causes
Why United runs late on this route
Late-arriving aircraft accounts for 48% of the 5,353 delay minutes carriers reported here, and the remaining four split what is left.
- 48%Late-arriving aircraft
- 37%Carrier
- 11%National Airspace System
- 4%Extreme weather
48% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 5,353 reported delay minutes here, that single category outweighs weather by 13 to one. The split is drawn from 5,353 reported delay minutes.
The largest share of delay minutes, 37%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,986 of the 5,353 delay minutes reported here.
Cancellations are rare at 0.66%, 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
7.8% 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 5am–8am window matters as much as it does.
The return leg runs 80.1% 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 IAH to MAF
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 79.4% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 447 completed flights over 12 months sit behind that.
Related
Where to go next
- IAH to MAF, every carrier
- United on MAF to IAH, the return leg
- SkyWest Airlines on IAH to MAF83.2%
- United Airlines network-wide record
- George Bush Intercontinental (IAH) delay statistics
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.05 million flight records
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.