Flight number record
UA 2276
United Airlines · Washington to Los Angeles
- Route
- IAD → LAX
- Departs
- 18:00
- Flights
- 341
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 2276, check with United Airlines.
UA 2276 sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 7 points worse than the national rate of 77.3%. The late ones land a little over an hour behind schedule. That rests on 341 flights, with a median arrival 1 minute early.
The national on-time rate over the same period is 77.3%, so UA 2276 runs 7 points behind the country as a whole. Across a thousand flights that is about 69 extra late arrivals.
Key figures
On time
70.4%
Arrivals under 15 minutes late, of 334 completed flights
Avg delay
73 min
Across delayed arrivals only, not all flights
Cancelled
1.47%
National rate is 1.89%
1 hour+ late
11.7%
National rate is 8.3%
These figures cover 341 flights between September 2025 and August 2026. Beyond the headline rate, 11.7% 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 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 341 flights, with 17:48 (82 flights) and 17:55 (53 flights) next.
- Departs 18:00148 flights43.4%
- Departs 17:4882 flights24.0%
- Departs 17:5553 flights15.5%
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 18:00 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and UA 2276 runs 2 points better at 70.4%. 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 2276 next to IAD to LAX
Every carrier on IAD to LAX combined arrived on time 84.1% of the time across 2,460 flights, so UA 2276 is 14 points behind it. United flew 2,340 flights on the same city pair under all its flight numbers, including this one, and those ran 84.6% on time. Across its whole network United Airlines managed 78.8%, which this flight trails by 8 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2276thin sample | 341 | 70.4% | 73 min | 1.47% | C |
| All United Airlines on IAD–LAX | 2,340 | 84.6% | 61 min | 0.77% | B+ |
| All carriers on IAD–LAX | 2,460 | 84.1% | 60 min | 0.73% | B+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 2276 quarter by quarter
Quarter by quarter UA 2276 held fairly steady: 71.9% in Oct–Dec 2025, 64.8% in Jan–Mar 2026, 73.0% in Apr–Jun 2026 and 71.0% in Jul–Sep 2026. A spread of 8 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 20256 flights—
- Oct–Dec 202592 flights71.9%
- Jan–Mar 202690 flights64.8%
- Apr–Jun 202691 flights73.0%
- Jul–Sep 202662 flights71.0%
Scale runs 55% to 80%. Rows with fewer than 30 flights show a dash.
By weekday, UA 2276 did best on Wednesday at 77.1% on time and worst on Tuesday at 64.6%. Each day rests on about 49 flights, so a gap of 13 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 2276 runs when it is late
The 99 late arrivals split 35 under half an hour, 25 between 30 and 60 minutes, and 39 an hour or more.
- 15+ min early71 flights21.3%
- Within 15 min164 flights49.1%
- 15–29 min late35 flights10.5%
- 30–59 min late25 flights7.5%
- 1–2 hours late21 flights6.3%
- 2+ hours late18 flights5.4%
Scale runs 0% to 100%.
Share of 334 completed flights by arrival against schedule.
29 of 100 late departures made up the time and arrived on time, 29% of them. In the other direction, 28 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 LAX.
The worst days
Worst days for UA 2276
The latest arrival of the period was on 9 June 2026, 7 hours 10 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The five worst days are spread across June, August, July and March, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 9 June 2026 | 7 hours 10 minutes | Late-arriving aircraft |
| 16 August 2026 | 5 hours 33 minutes | Carrier |
| 5 July 2026 | 5 hours 32 minutes | Extreme weather |
| 4 July 2026 | 4 hours 40 minutes | Extreme weather |
| 10 March 2026 | 4 hours 1 minute | Carrier |
Delay causes
Why UA 2276 runs late
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 7,263 reported delay minutes.
- 36%Carrier
- 26%National Airspace System
- 25%Late-arriving aircraft
- 13%Extreme weather
Extreme weather accounts for 13% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.2 times the usual weather exposure. The split is drawn from 7,263 delay minutes reported on UA 2276.
Cancellations sit at 1.47% against a national 1.89%, which is ordinary. Diversions add another 0.59%.
Connections and routes
What a delay on this flight costs
11.7% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection 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 five other city pairs in the data, including MSY to IAD (68), ORD to MSY (23) and ORD to IAD (21), 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. 341 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 one of the weaker ways to fly IAD to LAX: 14 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
- IAD to LAX, every carrier and departure
- LAX to IAD, the return direction
- United Airlines 1689 on the same route90.1%
- United Airlines 1385 on the same route83.9%
- 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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.