Flight number record
UA 2276
United Airlines · Washington to Los Angeles
- Route
- IAD → LAX
- Departs
- 18:00
- Flights
- 328
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s UA 2276, check with United Airlines.
UA 2276 draws a C. About one flight in three arrives at least 15 minutes late, and the typical late arrival is an hour and a half behind schedule. Build slack into anything you connect to. That rests on 328 flights, with a median arrival 2 minutes late.
The national on-time rate over the same period is 77.6%, so UA 2276 runs 13 points behind the country as a whole. Across a thousand flights that is about 126 extra late arrivals.
Key figures
On time
65.0%
Arrivals under 15 minutes late, of 320 completed flights
Avg delay
86 min
Across delayed arrivals only, not all flights
Cancelled
1.83%
National rate is 1.81%
1 hour+ late
14.7%
National rate is 8.1%
These figures cover 328 flights between July 2025 and June 2026. Beyond the headline rate, 14.7% 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 2276 flies
UA 2276 flies IAD to LAX without a single fixed slot. Its most common scheduled departure was 18:00, used on 148 of 328 flights, with 17:55 (53 flights) and 17:45 (49 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 18:00148 flights45.1%
- Departs 17:5553 flights16.2%
- Departs 17:4549 flights14.9%
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 18:00 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and UA 2276 runs 3 points worse at 65.0%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
Against the route
UA 2276 next to IAD to LAX
Every carrier on IAD to LAX combined arrived on time 81.8% of the time across 2,454 flights, so UA 2276 is 17 points behind it. United flew 2,320 flights on the same city pair under all its flight numbers, including this one, and those ran 83.1% on time. Across its whole network United Airlines managed 79.0%, which this flight trails by 14 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2276thin sample | 328 | 65.0% | 86 min | 1.83% | C |
| All United Airlines on IAD–LAX | 2,320 | 83.1% | 63 min | 0.99% | B+ |
| All carriers on IAD–LAX | 2,454 | 81.8% | 63 min | 0.94% | B+ |
| United Airlines, whole network | 821,041 | 79.0% | 72 min | 1.01% | B |
Across the year
UA 2276 quarter by quarter
UA 2276 did not run the same all year. Its best quarter was Apr–Jun 2026 at 73.0% on time and its weakest Jul–Sep 2025 at 40.7%, a swing of 32 points on roughly 82 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 202555 flights40.7%
- Oct–Dec 202592 flights71.9%
- Jan–Mar 202690 flights64.8%
- Apr–Jun 202691 flights73.0%
Scale runs 30% to 80%. Rows with fewer than 30 flights show a dash.
By weekday, UA 2276 did best on Saturday at 70.2% on time and worst on Thursday at 57.8%. Each day rests on about 47 flights, so a gap of 12 points is worth noticing but could still narrow in another year.
Delay causes
Why UA 2276 runs late
One category carries most of the weight here. Carrier accounts for 45% of the 9,642 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.
- 45%Carrier
- 29%Late-arriving aircraft
- 19%National Airspace System
- 8%Extreme weather
The largest share of delay minutes, 45%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 4,317 of the 9,642 delay minutes reported here. The split is drawn from 9,642 delay minutes reported on UA 2276.
Cancellations sit at 1.83% against a national 1.81%, which is ordinary. Diversions add another 0.61%.
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. 14.7% 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.
At 2,288 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.
The same number turns up on six other city pairs in the data, including MSY to IAD (116), LAX to ORD (49) and ORD to MSY (23), but none flew often enough under UA 2276 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to IAD to LAX only.
One caution: this is a thin sample. 328 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 2276
For a booking, UA 2276 is a flight to put a long connection behind. 14.7% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.
Related
Where to go next
- IAD to LAX, every carrier and departure
- LAX to IAD, the return direction
- United Airlines 1689 on the same route90.6%
- United Airlines 1385 on the same route82.7%
- Washington Dulles International (IAD) delay statistics
- Los Angeles International (LAX) 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
- How often a connection fails at the major US hubs
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.