Flight number record
UA 1071
United Airlines · San Diego to Washington
- Route
- SAN → IAD
- Departs
- 08:00
- Flights
- 352
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 1071, check with United Airlines.
UA 1071 earns an A+. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 12 points better than the national rate of 77.3%. When something does go wrong the average delay runs about an hour. That rests on 352 flights, with a median arrival 12 minutes early.
Set against the rest of the country, UA 1071's record is 12 points better than the US average of 77.3%. That gap is worth roughly 117 fewer late arrivals for every thousand flights.
Key figures
On time
89.0%
Arrivals under 15 minutes late, of 346 completed flights
Avg delay
64 min
Across delayed arrivals only, not all flights
Cancelled
0.85%
National rate is 1.89%
1 hour+ late
2.9%
National rate is 8.3%
These figures cover 352 flights between September 2025 and August 2026. The median arrival is 12 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Schedule
When UA 1071 flies
UA 1071 flies SAN to IAD without a single fixed slot. Its most common scheduled departure was 08:00, used on 195 of 352 flights, with 08:30 (82 flights) next.
- Departs 08:00195 flights55.4%
- Departs 08:3082 flights23.3%
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 08:00 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and UA 1071 runs 5 points better at 89.0%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
UA 1071 next to SAN to IAD
Every carrier on SAN to IAD combined arrived on time 87.6% of the time across 1,402 flights, so UA 1071 is about level with it. United flew 1,041 flights on the same city pair under all its flight numbers, including this one, and those ran 88.0% on time. Across its whole network United Airlines managed 78.8%, which this flight beats by 10 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 1071thin sample | 352 | 89.0% | 64 min | 0.85% | A+ |
| All United Airlines on SAN–IAD | 1,041 | 88.0% | 81 min | 0.77% | A+ |
| All carriers on SAN–IAD | 1,402 | 87.6% | 74 min | 0.78% | A+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 1071 quarter by quarter
UA 1071 did not run the same all year. Its best quarter was Jul–Sep 2026 at 94.9% on time and its weakest Jan–Mar 2026 at 80.5%, a swing of 14 points on roughly 70 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 flights93.3%
- Oct–Dec 202592 flights91.2%
- Jan–Mar 202678 flights80.5%
- Apr–Jun 202690 flights88.8%
- Jul–Sep 202662 flights94.9%
Scale runs 70% to 100%.
By weekday, UA 1071 ranged from 85.7% on Sunday to 95.7% on Tuesday. With about 50 flights behind each day, a spread of 10 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late UA 1071 runs when it is late
UA 1071 often beats the schedule: 158 of 346 completed flights, 46%, arrived 15 minutes or more early. The 38 late arrivals split 16 under half an hour, 12 between 30 and 60 minutes, and 10 an hour or more.
- 15+ min early158 flights45.7%
- Within 15 min150 flights43.4%
- 15–29 min late16 flights4.6%
- 30–59 min late12 flights3.5%
- 1–2 hours late6 flights1.7%
- 2+ hours late4 flights1.2%
Scale runs 0% to 100%.
Share of 346 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 30 departures that left 15 minutes late or more, only 3 made it up before arrival. 11 flights left on time and still arrived late.
The worst days
Worst days for UA 1071
The latest arrival of the period was on 7 December 2025, 7 hours 55 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). On three of the five worst days the largest share was filed as national airspace system delay.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 7 December 2025 | 7 hours 55 minutes | Carrier |
| 21 November 2025 | 3 hours 45 minutes | Carrier |
| 2 November 2025 | 2 hours 14 minutes | National Airspace System |
| 15 December 2025 | 2 hours 13 minutes | National Airspace System |
| 11 May 2026 | 1 hour 58 minutes | National Airspace System |
Delay causes
Why UA 1071 runs late
Carrier accounts for 54% of the 2,426 delay minutes carriers reported here, and the remaining four split what is left.
- 54%Carrier
- 41%National Airspace System
- 3%Late-arriving aircraft
- 2%Extreme weather
The largest share of delay minutes, 54%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,307 of the 2,426 delay minutes reported here. The split is drawn from 2,426 delay minutes reported on UA 1071.
Cancellations are rare at 0.85%, 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 2.9% 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.
At 2,253 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 two other city pairs in the data, including IAD to JAX (109) and IAD to DEN (31), but none flew often enough under UA 1071 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SAN to IAD only.
One caution: this is a thin sample. 352 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 1071
For a booking, UA 1071 has one of the better records a US domestic flight can show: 89.0% on time and 0.85% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- SAN to IAD, every carrier and departure
- IAD to SAN, the return direction
- United Airlines 2129 on the same route87.3%
- San Diego International (SAN) 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
- Worst months to fly in the US, ranked by the data
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.