Flight number record
UA 376
United Airlines · Austin to Washington
- Route
- AUS → IAD
- Departs
- 16:55
- Flights
- 275
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s UA 376, check with United Airlines.
UA 376 earns an A+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 9 points better than the national rate of 77.6%. When something does go wrong the average delay runs an hour and a half. That rests on 275 flights, with a median arrival 5 minutes early.
Set against the rest of the country, UA 376's record is 9 points better than the US average of 77.6%. That gap is worth roughly 85 fewer late arrivals for every thousand flights.
Key figures
On time
86.1%
Arrivals under 15 minutes late, of 273 completed flights
Avg delay
95 min
Across delayed arrivals only, not all flights
Cancelled
0.73%
National rate is 1.81%
1 hour+ late
8.8%
National rate is 8.1%
These figures cover 275 flights between July 2025 and June 2026. Beyond the headline rate, 8.8% 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 376 flies
UA 376 flies AUS to IAD without a single fixed slot. Its most common scheduled departure was 16:55, used on 60 of 275 flights, with 17:00 (49 flights) and 16:59 (34 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 16:5560 flights21.8%
- Departs 17:0049 flights17.8%
- Departs 16:5934 flights12.4%
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 16:55 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and UA 376 runs 14 points better at 86.1%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
Against the route
UA 376 next to AUS to IAD
Every carrier on AUS to IAD combined arrived on time 89.1% of the time across 1,049 flights, so UA 376 is 3 points behind it. United flew 1,007 flights on the same city pair under all its flight numbers, including this one, and those ran 90.0% on time. Across its whole network United Airlines managed 79.0%, which this flight beats by 7 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 376thin sample | 275 | 86.1% | 95 min | 0.73% | A+ |
| All United Airlines on AUS–IAD | 1,007 | 90.0% | 67 min | 0.79% | A+ |
| All carriers on AUS–IAD | 1,049 | 89.1% | 88 min | 0.76% | A+ |
| United Airlines, whole network | 821,041 | 79.0% | 72 min | 1.01% | B |
Across the year
UA 376 quarter by quarter
Quarter by quarter UA 376 held fairly steady: 88.3% in Jul–Sep 2025, 86.1% in Oct–Dec 2025, 84.5% in Jan–Mar 2026 and 84.9% in Apr–Jun 2026. A spread of 4 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202577 flights88.3%
- Oct–Dec 202572 flights86.1%
- Jan–Mar 202673 flights84.5%
- Apr–Jun 202653 flights84.9%
Scale runs 75% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, UA 376 did best on Monday at 93.3% on time and worst on Sunday at 75.0%. Each day rests on about 39 flights, so a gap of 18 points is worth noticing but could still narrow in another year.
Delay causes
Why UA 376 runs late
One category carries most of the weight here. Late-arriving aircraft accounts for 58% of the 3,596 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.
- 58%Late-arriving aircraft
- 28%National Airspace System
- 12%Carrier
- 2%Extreme weather
58% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 3,596 reported delay minutes here, that single category outweighs weather by 32 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 3,596 delay minutes reported on UA 376.
Cancellations are rare at 0.73%, 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
8.8% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last an hour and a half, which a normal layover absorbs.
The 1,297 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 eleven other city pairs in the data, including ORD to LGA (18), DEN to MCO (16) and IAH to RNO (11), but none flew often enough under UA 376 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to AUS to IAD only.
One caution: this is a thin sample. 275 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 376
For a booking, UA 376 has one of the better records a US domestic flight can show: 86.1% on time and 0.73% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- AUS to IAD, every carrier and departure
- IAD to AUS, the return direction
- United Airlines 525 on the same route93.5%
- United Airlines 2344 on the same route88.9%
- Austin-Bergstrom International (AUS) delay statistics
- Washington Dulles International (IAD) 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.