Flight number record

UA 1571

United Airlines · Houston to Orlando

Route: IAH → MCO
Departs: 16:45
Flights: 357
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s UA 1571, check with United Airlines.

UA 1571 lands a B, 3 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That is a workable record, not a spotless one. That rests on 357 flights, with a median arrival 10 minutes early.

On time

80.1%

Arrivals under 15 minutes late, of 351 completed flights

Avg delay

73 min

Across delayed arrivals only, not all flights

Cancelled

1.12%

National rate is 1.81%

1 hour+ late

9.7%

National rate is 8.1%

These figures cover 357 flights between July 2025 and June 2026. Beyond the headline rate, 9.7% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

Schedule

When UA 1571 flies

UA 1571 flies IAH to MCO without a single fixed slot. Its most common scheduled departure was 16:45, used on 57 of 357 flights, with 16:50 (51 flights) and 17:05 (49 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 16:4557 flights16.0%
Departs 16:5051 flights14.3%
Departs 17:0549 flights13.7%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.

A 16:45 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and UA 1571 runs 8 points better at 80.1%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

UA 1571 next to IAH to MCO

Every carrier on IAH to MCO combined arrived on time 81.6% of the time across 3,669 flights, so UA 1571 is 2 points behind it. United flew 2,471 flights on the same city pair under all its flight numbers, including this one, and those ran 85.1% on time. Across its whole network United Airlines managed 79.0%, close to this flight's figure.

UA 1571 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 1571thin sample	357	80.1%	73 min	1.12%	B
All United Airlines on IAH–MCO	2,471	85.1%	71 min	0.65%	A+
All carriers on IAH–MCO	3,669	81.6%	82 min	1.01%	B
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 1571 quarter by quarter

UA 1571 did not run the same all year. Its best quarter was Oct–Dec 2025 at 90.0% on time and its weakest Jul–Sep 2025 at 62.5%, a swing of 28 points on roughly 89 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 202591 flights62.5%
Oct–Dec 202591 flights90.0%
Jan–Mar 202689 flights88.6%
Apr–Jun 202686 flights78.8%

Scale runs 55% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, UA 1571 did best on Monday at 88.5% on time and worst on Sunday at 75.5%. Each day rests on about 51 flights, so a gap of 13 points is worth noticing but could still narrow in another year.

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 5,072 reported delay minutes.

National Airspace System
37%
Carrier
31%
Late-arriving aircraft
28%
Extreme weather
4%

37% 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 1,886 minutes out of 5,072, against a national NAS share of 21%. The split is drawn from 5,072 delay minutes reported on UA 1571.

Cancellations sit at 1.12% against a national 1.81%, which is ordinary. Diversions add another 0.56%.

Connections and routes

What a delay on this flight costs

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 9.7% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.

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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

The same number turns up on six other city pairs in the data, including LAX to IAH (131), SFO to LAX (64) and SAT to IAH (52), 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. 357 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 80.1% on time with 1.12% cancelled over 357 flights. Those are rates from the past twelve months, not a forecast for any particular day.

Where to go next

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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures