Flight number record
UA 1747
United Airlines · Austin to Houston
- Route
- AUS → IAH
- Departs
- 12:15
- Flights
- 305
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 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 77.3%. The late ones land about 50 minutes behind schedule. That rests on 305 flights, with a median arrival 4 minutes late.
The national on-time rate over the same period is 77.3%, so UA 1747 runs 6 points behind the country as a whole. Across a thousand flights that is about 56 extra late arrivals.
Key figures
On time
71.7%
Arrivals under 15 minutes late, of 304 completed flights
Avg delay
49 min
Across delayed arrivals only, not all flights
Cancelled
0.33%
National rate is 1.89%
1 hour+ late
4.9%
National rate is 8.3%
These figures cover 305 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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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 140 of 305 flights, with 12:17 (41 flights) and 12:10 (37 flights) next.
- Departs 12:15140 flights45.9%
- Departs 12:1741 flights13.4%
- Departs 12:1037 flights12.1%
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 12:15 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and UA 1747 runs 7 points worse at 71.7%. 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 1747 next to AUS to IAH
Every carrier on AUS to IAH combined arrived on time 77.2% of the time across 2,670 flights, so UA 1747 is 6 points behind it. United flew 2,643 flights on the same city pair under all its flight numbers, including this one, and those ran 77.0% on time. Across its whole network United Airlines managed 78.8%, which this flight trails by 7 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 1747thin sample | 305 | 71.7% | 49 min | 0.33% | C+ |
| All United Airlines on AUS–IAH | 2,643 | 77.0% | 58 min | 1.02% | B |
| All carriers on AUS–IAH | 2,670 | 77.2% | 58 min | 1.01% | B |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | 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 61 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 flights83.3%
- Oct–Dec 202572 flights63.4%
- Jan–Mar 202657 flights89.5%
- Apr–Jun 202684 flights63.1%
- Jul–Sep 202662 flights71.0%
Scale runs 55% to 95%.
By weekday, UA 1747 did best on Wednesday at 87.0% on time and worst on Friday at 63.6%. Each day rests on about 44 flights, so a gap of 23 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 1747 runs when it is late
Most of the lateness is short. 45 of the 86 late arrivals were under half an hour behind, and 15 reached an hour or more.
- 15+ min early26 flights8.6%
- Within 15 min192 flights63.2%
- 15–29 min late45 flights14.8%
- 30–59 min late26 flights8.6%
- 1–2 hours late9 flights3.0%
- 2+ hours late6 flights2.0%
Scale runs 0% to 100%.
Share of 304 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 40 departures that left 15 minutes late or more, only 3 made it up before arrival. In the other direction, 49 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 UA 1747
The latest arrival of the period was on 24 November 2025, 9 hours 13 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The five worst days are spread across November, June, October, July and August, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 24 November 2025 | 9 hours 13 minutes | National Airspace System |
| 7 June 2026 | 5 hours 23 minutes | Carrier |
| 25 October 2025 | 3 hours 37 minutes | Late-arriving aircraft |
| 13 July 2026 | 3 hours 23 minutes | Late-arriving aircraft |
| 27 August 2026 | 2 hours 22 minutes | Carrier |
Delay causes
Why UA 1747 runs late
National Airspace System accounts for 44% of the 4,246 delay minutes carriers reported here, and the remaining four split what is left.
- 44%National Airspace System
- 40%Late-arriving aircraft
- 15%Carrier
- 2%Extreme weather
40% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 4,246 reported delay minutes here, that single category outweighs weather by 22 to one. The split is drawn from 4,246 delay minutes reported on UA 1747.
Cancellations are rare at 0.33%, 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
Badly late arrivals are rare here: only 4.9% land an hour or more behind schedule, against 8.3% 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 five other city pairs in the data, including IAH to LGA (38), LAX to IAD (24) and SLC to ORD (17), 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. 305 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, UA 1747 is one of the weaker ways to fly AUS to IAH: 6 points below the route as a whole. If the schedule allows, compare it with the other departures listed on the route page before settling on this one.
Related
Where to go next
- AUS to IAH, every carrier and departure
- IAH to AUS, the return direction
- United Airlines 1326 on the same route68.6%
- United Airlines 2196 on the same route76.7%
- United Airlines 1966 on the same route95.0%
- Austin-Bergstrom International (AUS) delay statistics
- George Bush Intercontinental (IAH) 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
- Why the first flight of the morning is statistically safest
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.