Flight number record
UA 1571
United Airlines · Houston to Orlando
- Route
- IAH → MCO
- Departs
- 16:50
- Flights
- 351
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 1571, check with United Airlines.
UA 1571 earns a B+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 7 points better than the national rate of 77.3%. When something does go wrong the average delay runs a little over an hour. That rests on 351 flights, with a median arrival 11 minutes early.
Set against the rest of the country, UA 1571's record is 7 points better than the US average of 77.3%. That gap is worth roughly 72 fewer late arrivals for every thousand flights.
Key figures
On time
84.5%
Arrivals under 15 minutes late, of 348 completed flights
Avg delay
77 min
Across delayed arrivals only, not all flights
Cancelled
0.57%
National rate is 1.89%
1 hour+ late
7.5%
National rate is 8.3%
These figures cover 351 flights between September 2025 and August 2026. The median arrival is 11 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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Schedule
When UA 1571 flies
UA 1571 flies IAH to MCO without a single fixed slot. Its most common scheduled departure was 16:50, used on 68 of 351 flights, with 16:55 (52 flights) and 17:09 (46 flights) next.
- Departs 16:5068 flights19.4%
- Departs 16:5552 flights14.8%
- Departs 17:0946 flights13.1%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 16:50 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and UA 1571 runs 13 points better at 84.5%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
UA 1571 next to IAH to MCO
Every carrier on IAH to MCO combined arrived on time 83.2% of the time across 3,569 flights, so UA 1571 is about level with it. United flew 2,443 flights on the same city pair under all its flight numbers, including this one, and those ran 86.5% on time. Across its whole network United Airlines managed 78.8%, which this flight beats by 6 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 1571thin sample | 351 | 84.5% | 77 min | 0.57% | B+ |
| All United Airlines on IAH–MCO | 2,443 | 86.5% | 71 min | 0.53% | A+ |
| All carriers on IAH–MCO | 3,569 | 83.2% | 80 min | 1.04% | B |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 1571 quarter by quarter
UA 1571 did not run the same all year. Its best quarter was Jul–Sep 2025 at 96.7% on time and its weakest Jul–Sep 2026 at 70.9%, a swing of 26 points on roughly 70 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Jul–Sep 202530 flights96.7%
- Oct–Dec 202591 flights90.0%
- Jan–Mar 202689 flights88.6%
- Apr–Jun 202686 flights78.8%
- Jul–Sep 202655 flights70.9%
Scale runs 60% to 100%.
By weekday, UA 1571 ranged from 78.8% on Friday to 89.6% on Wednesday. With about 50 flights behind each day, a spread of 11 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late UA 1571 runs when it is late
UA 1571 often beats the schedule: 139 of 348 completed flights, 40%, arrived 15 minutes or more early. The 54 late arrivals split 14 under half an hour, 14 between 30 and 60 minutes, and 26 an hour or more.
- 15+ min early139 flights39.9%
- Within 15 min155 flights44.5%
- 15–29 min late14 flights4.0%
- 30–59 min late14 flights4.0%
- 1–2 hours late13 flights3.7%
- 2+ hours late13 flights3.7%
Scale runs 0% to 100%.
Share of 348 completed flights by arrival against schedule.
16 of 57 late departures made up the time and arrived on time, 28% of them. 13 flights left on time and still arrived late.
The worst days
Worst days for UA 1571
The latest arrival of the period was on 6 August 2026, 3 hours 37 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. On three of the five worst days the largest share was filed as a late-arriving aircraft.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 6 August 2026 | 3 hours 37 minutes | National Airspace System |
| 27 February 2026 | 3 hours 31 minutes | National Airspace System |
| 16 August 2026 | 3 hours 15 minutes | Late-arriving aircraft |
| 16 March 2026 | 3 hours 13 minutes | Late-arriving aircraft |
| 19 December 2025 | 3 hours 1 minute | Late-arriving aircraft |
Delay causes
Why UA 1571 runs late
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 4,144 reported delay minutes.
- 35%Carrier
- 32%National Airspace System
- 28%Late-arriving aircraft
- 5%Extreme weather
The largest share of delay minutes, 35%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,469 of the 4,144 delay minutes reported here. The split is drawn from 4,144 delay minutes reported on UA 1571.
Cancellations are rare at 0.57%, 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 routes
What a delay on this flight costs
7.5% 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 a little over an hour, which a normal layover absorbs.
The 854 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The same number turns up on seven other city pairs in the data, including LAX to IAH (69), SAT to IAH (52) and SAN to IAH (37), but none flew often enough under UA 1571 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to IAH to MCO only.
One caution: this is a thin sample. 351 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 UA 1571
For a booking, read UA 1571 as 84.5% on time with 0.57% cancelled over 351 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- IAH to MCO, every carrier and departure
- MCO to IAH, the return direction
- United Airlines 2662 on the same route86.8%
- United Airlines 496 on the same route80.6%
- United Airlines 2245 on the same route94.7%
- United Airlines 2451 on the same route79.8%
- Frontier Airlines 1418 on the same route77.9%
- George Bush Intercontinental (IAH) delay statistics
- Orlando International (MCO) delay statistics
- United Airlines on-time record
- Every United Airlines flight number with a record
- The most and least reliable flight numbers in the US
- Worst months to fly in the US, ranked by the data
A flight number here means United Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
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.