Flight number record
UA 376
United Airlines · Austin to Washington
- Route
- AUS → IAD
- Departs
- 17:00
- Flights
- 278
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 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 77.3%. When something does go wrong the average delay runs an hour and a half. That rests on 278 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 77.3%. That gap is worth roughly 93 fewer late arrivals for every thousand flights.
Key figures
On time
86.6%
Arrivals under 15 minutes late, of 276 completed flights
Avg delay
92 min
Across delayed arrivals only, not all flights
Cancelled
0.72%
National rate is 1.89%
1 hour+ late
8.0%
National rate is 8.3%
These figures cover 278 flights between September 2025 and August 2026. Beyond the headline rate, 8.0% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Schedule
When UA 376 flies
UA 376 flies AUS to IAD without a single fixed slot. Its most common scheduled departure was 17:00, used on 78 of 278 flights, with 16:55 (66 flights) and 17:05 (32 flights) next.
- Departs 17:0078 flights28.1%
- Departs 16:5566 flights23.7%
- Departs 17:0532 flights11.5%
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 17:00 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and UA 376 runs 19 points better at 86.6%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Against the route
UA 376 next to AUS to IAD
Every carrier on AUS to IAD combined arrived on time 89.2% of the time across 1,019 flights, so UA 376 is 3 points behind it. United flew 988 flights on the same city pair under all its flight numbers, including this one, and those ran 90.1% on time. Across its whole network United Airlines managed 78.8%, which this flight beats by 8 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 376thin sample | 278 | 86.6% | 92 min | 0.72% | A+ |
| All United Airlines on AUS–IAD | 988 | 90.1% | 91 min | 0.81% | A+ |
| All carriers on AUS–IAD | 1,019 | 89.2% | 103 min | 0.79% | A+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 376 quarter by quarter
UA 376 did not run the same all year. Its best quarter was Jul–Sep 2025 at 100.0% on time and its weakest Jul–Sep 2026 at 84.0%, a swing of 16 points on roughly 56 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 flights100.0%
- Oct–Dec 202572 flights86.1%
- Jan–Mar 202673 flights84.5%
- Apr–Jun 202653 flights84.9%
- Jul–Sep 202650 flights84.0%
Scale runs 75% to 100%.
By weekday, UA 376 did best on Tuesday at 91.5% on time and worst on Sunday at 74.3%. Each day rests on about 40 flights, so a gap of 17 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 376 runs when it is late
When UA 376 is late it tends to be very late: 22 of its 37 late arrivals were an hour or more behind, and 11 were two hours or more.
- 15+ min early61 flights22.1%
- Within 15 min178 flights64.5%
- 15–29 min late8 flights2.9%
- 30–59 min late7 flights2.5%
- 1–2 hours late11 flights4.0%
- 2+ hours late11 flights4.0%
Scale runs 0% to 100%.
Share of 276 completed flights by arrival against schedule.
9 of 40 late departures made up the time and arrived on time, 23% of them. 6 flights left on time and still arrived late.
The worst days
Worst days for UA 376
The latest arrival of the period was on 13 March 2026, 4 hours 48 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The five worst days are spread across March, July, August and June, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 13 March 2026 | 4 hours 48 minutes | National Airspace System |
| 21 July 2026 | 4 hours 40 minutes | National Airspace System |
| 23 August 2026 | 4 hours 37 minutes | Late-arriving aircraft |
| 16 March 2026 | 3 hours 9 minutes | Late-arriving aircraft |
| 10 June 2026 | 2 hours 49 minutes | Carrier |
Delay causes
Why UA 376 runs late
Late-arriving aircraft accounts for 49% of the 3,386 delay minutes carriers reported here, and the remaining four split what is left.
- 49%Late-arriving aircraft
- 36%National Airspace System
- 13%Carrier
- 2%Extreme weather
49% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 3,386 reported delay minutes here, that single category outweighs weather by 26 to one. The split is drawn from 3,386 delay minutes reported on UA 376.
Cancellations are rare at 0.72%, 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
8.0% 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 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.
The same number turns up on nine other city pairs in the data, including ORD to LGA (18), DEN to MCO (16) and EWR to RDU (7), 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. 278 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: 86.6% on time and 0.72% 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 route93.4%
- United Airlines 2344 on the same route88.7%
- 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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.