Flight number record
UA 2056
United Airlines · Los Angeles to San Francisco
- Route
- LAX → SFO
- Departs
- 21:34
- Flights
- 281
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 2056, check with United Airlines.
UA 2056 draws a D+. Roughly one flight in two arrives at least 15 minutes late, and the typical late arrival is about an hour behind schedule. Build slack into anything you connect to. That rests on 281 flights, with a median arrival 7 minutes late.
The national on-time rate over the same period is 77.3%, so UA 2056 runs 18 points behind the country as a whole. Across a thousand flights that is about 175 extra late arrivals.
Key figures
On time
59.8%
Arrivals under 15 minutes late, of 281 completed flights
Avg delay
58 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
12.1%
National rate is 8.3%
These figures cover 281 flights between September 2025 and August 2026. Beyond the headline rate, 12.1% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When UA 2056 flies
UA 2056 flies LAX to SFO without a single fixed slot. Its most common scheduled departure was 21:34, used on 87 of 281 flights, with 21:30 (57 flights) and 21:29 (36 flights) next.
- Departs 21:3487 flights31.0%
- Departs 21:3057 flights20.3%
- Departs 21:2936 flights12.8%
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 21:34 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and UA 2056 runs 10 points worse at 59.8%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
UA 2056 next to LAX to SFO
Every carrier on LAX to SFO combined arrived on time 60.1% of the time across 11,437 flights, so UA 2056 is about level with it. United flew 3,330 flights on the same city pair under all its flight numbers, including this one, and those ran 62.9% on time. Across its whole network United Airlines managed 78.8%, which this flight trails by 19 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2056thin sample | 281 | 59.8% | 58 min | 0.00% | D+ |
| All United Airlines on LAX–SFO | 3,330 | 62.9% | 56 min | 0.12% | D+ |
| All carriers on LAX–SFO | 11,437 | 60.1% | 57 min | 0.80% | D+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 2056 quarter by quarter
UA 2056 did not run the same all year. Its best quarter was Jan–Mar 2026 at 83.1% on time and its weakest Apr–Jun 2026 at 36.8%, a swing of 46 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 20255 flights—
- Oct–Dec 202583 flights60.2%
- Jan–Mar 202683 flights83.1%
- Apr–Jun 202657 flights36.8%
- Jul–Sep 202653 flights45.3%
Scale runs 30% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, UA 2056 did best on Tuesday at 80.6% on time and worst on Sunday at 51.1%. Each day rests on about 40 flights, so a gap of 29 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 2056 runs when it is late
The 113 late arrivals split 44 under half an hour, 35 between 30 and 60 minutes, and 34 an hour or more.
- 15+ min early36 flights12.8%
- Within 15 min132 flights47.0%
- 15–29 min late44 flights15.7%
- 30–59 min late35 flights12.5%
- 1–2 hours late22 flights7.8%
- 2+ hours late12 flights4.3%
Scale runs 0% to 100%.
Share of 281 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 74 departures that left 15 minutes late or more, only 5 made it up before arrival. In the other direction, 44 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 SFO.
The worst days
Worst days for UA 2056
The latest arrival of the period was on 5 January 2026, 4 hours 10 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. Three of the five worst days fell in January 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 5 January 2026 | 4 hours 10 minutes | Late-arriving aircraft |
| 4 June 2026 | 4 hours 9 minutes | Carrier |
| 2 January 2026 | 4 hours 2 minutes | National Airspace System |
| 3 January 2026 | 3 hours 34 minutes | National Airspace System |
| 21 December 2025 | 3 hours 23 minutes | National Airspace System |
Delay causes
Why UA 2056 runs late
National Airspace System accounts for 58% of the 6,496 delay minutes carriers reported here, and the remaining four split what is left.
- 58%National Airspace System
- 31%Late-arriving aircraft
- 11%Carrier
58% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 3,798 minutes out of 6,496, against a national NAS share of 21%. The split is drawn from 6,496 delay minutes reported on UA 2056.
Cancellations are rare at 0.00%, below the national 1.89% and low enough to earn the plus on the grade. Almost no flights are called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
12.1% 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.
The same number turns up on five other city pairs in the data, including SFO to ORD (98), SFO to AUS (36) and IAD to ORD (24), but none flew often enough under UA 2056 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to LAX to SFO only.
One caution: this is a thin sample. 281 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 2056
For a booking, UA 2056 is a flight to put a long connection behind. 12.1% 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
- LAX to SFO, every carrier and departure
- SFO to LAX, the return direction
- Delta Air Lines 2267 on the same route44.3%
- United Airlines 2019 on the same route65.1%
- Delta Air Lines 1421 on the same route94.1%
- Delta Air Lines 1559 on the same route65.7%
- United Airlines 1791 on the same route55.4%
- Delta Air Lines 1715 on the same route48.3%
- Los Angeles International (LAX) delay statistics
- San Francisco International (SFO) 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.