Flight number record

UA 1747

United Airlines · Austin to Houston

Route: AUS → IAH
Departs: 12:15
Flights: 256
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s UA 1747, check with United Airlines.

UA 1747 sits in the middle of the pack with a C+. About seven flights in ten arrive on time by the DOT's definition, 6 points worse than the national rate of 77.6%. The late ones land about 50 minutes behind schedule. That rests on 256 flights, with a median arrival 3 minutes late.

The national on-time rate over the same period is 77.6%, so UA 1747 runs 6 points behind the country as a whole. Across a thousand flights that is about 62 extra late arrivals.

On time

71.4%

Arrivals under 15 minutes late, of 255 completed flights

Avg delay

51 min

Across delayed arrivals only, not all flights

Cancelled

0.39%

National rate is 1.81%

1 hour+ late

4.7%

National rate is 8.1%

These figures cover 256 flights between July 2025 and June 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.

Schedule

When UA 1747 flies

UA 1747 flies AUS to IAH without a single fixed slot. Its most common scheduled departure was 12:15, used on 100 of 256 flights, with 12:10 (49 flights) and 12:17 (41 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 12:15100 flights39.1%
Departs 12:1049 flights19.1%
Departs 12:1741 flights16.0%

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 12:15 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and UA 1747 runs 7 points worse at 71.4%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

UA 1747 next to AUS to IAH

Every carrier on AUS to IAH combined arrived on time 75.6% of the time across 2,674 flights, so UA 1747 is 4 points behind it. United flew 2,608 flights on the same city pair under all its flight numbers, including this one, and those ran 75.5% on time. Across its whole network United Airlines managed 79.0%, which this flight trails by 8 points.

UA 1747 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 1747thin sample	256	71.4%	51 min	0.39%	C+
All United Airlines on AUS–IAH	2,608	75.5%	61 min	1.27%	B
All carriers on AUS–IAH	2,674	75.6%	62 min	1.23%	B
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 1747 quarter by quarter

UA 1747 did not run the same all year. Its best quarter was Jan–Mar 2026 at 89.5% on time and its weakest Apr–Jun 2026 at 63.1%, a swing of 26 points on roughly 64 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 202543 flights76.7%
Oct–Dec 202572 flights63.4%
Jan–Mar 202657 flights89.5%
Apr–Jun 202684 flights63.1%

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

By weekday, UA 1747 did best on Wednesday at 89.7% on time and worst on Friday at 59.5%. Each day rests on about 37 flights, so a gap of 30 points is worth noticing but could still narrow in another year.

Delay causes

Why UA 1747 runs late

One category carries most of the weight here. National Airspace System accounts for 54% of the 3,701 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

National Airspace System
54%
Late-arriving aircraft
33%
Carrier
13%
Extreme weather
0%

54% 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 1,992 minutes out of 3,701, against a national NAS share of 21%. The split is drawn from 3,701 delay minutes reported on UA 1747.

Cancellations are rare at 0.39%, below the national 1.81% 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

Badly late arrivals are rare here: only 4.7% land an hour or more behind schedule, against 8.1% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.

The same number turns up on six other city pairs in the data, including SEA to DEN (49), IAH to LGA (38) and LAX to IAD (24), but none flew often enough under UA 1747 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to AUS to IAH only.

One caution: this is a thin sample. 256 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 1747

For a booking, read UA 1747 as 71.4% on time with 0.39% cancelled over 256 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