Flight number record
UA 2047
United Airlines · Las Vegas to San Francisco
- Route
- LAS → SFO
- Departs
- 16:05
- Flights
- 316
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 2047, check with United Airlines.
UA 2047 draws a C+. About one flight in three arrives at least 15 minutes late, and the typical late arrival is a little over an hour behind schedule. Build slack into anything you connect to. That rests on 316 flights, with a median arrival 2 minutes early.
The national on-time rate over the same period is 77.3%, so UA 2047 runs 10 points behind the country as a whole. Across a thousand flights that is about 96 extra late arrivals.
Key figures
On time
67.7%
Arrivals under 15 minutes late, of 316 completed flights
Avg delay
69 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
12.3%
National rate is 8.3%
These figures cover 316 flights between September 2025 and August 2026. Beyond the headline rate, 12.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When UA 2047 flies
UA 2047 flies LAS to SFO without a single fixed slot. Its most common scheduled departure was 16:05, used on 72 of 316 flights, with 15:50 (55 flights) and 15:55 (41 flights) next.
- Departs 16:0572 flights22.8%
- Departs 15:5055 flights17.4%
- Departs 15:5541 flights13.0%
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 16:05 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and UA 2047 runs 4 points worse at 67.7%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
UA 2047 next to LAS to SFO
Every carrier on LAS to SFO combined arrived on time 58.0% of the time across 6,137 flights, so UA 2047 is 10 points ahead of it. United flew 2,816 flights on the same city pair under all its flight numbers, including this one, and those ran 62.6% on time. Across its whole network United Airlines managed 78.8%, which this flight trails by 11 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2047thin sample | 316 | 67.7% | 69 min | 0.00% | C+ |
| All United Airlines on LAS–SFO | 2,816 | 62.6% | 64 min | 0.43% | D+ |
| All carriers on LAS–SFO | 6,137 | 58.0% | 60 min | 0.77% | D+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 2047 quarter by quarter
UA 2047 did not run the same all year. Its best quarter was Jan–Mar 2026 at 84.3% on time and its weakest Apr–Jun 2026 at 49.4%, a swing of 35 points on roughly 79 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 flights70.0%
- Oct–Dec 202591 flights70.3%
- Jan–Mar 202689 flights84.3%
- Apr–Jun 202685 flights49.4%
- Jul–Sep 202621 flights—
Scale runs 40% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, UA 2047 did best on Tuesday at 78.3% on time and worst on Friday at 55.6%. Each day rests on about 45 flights, so a gap of 23 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 2047 runs when it is late
UA 2047 often beats the schedule: 95 of 316 completed flights, 30%, arrived 15 minutes or more early. The 102 late arrivals split 36 under half an hour, 27 between 30 and 60 minutes, and 39 an hour or more.
- 15+ min early95 flights30.1%
- Within 15 min119 flights37.7%
- 15–29 min late36 flights11.4%
- 30–59 min late27 flights8.5%
- 1–2 hours late22 flights7.0%
- 2+ hours late17 flights5.4%
Scale runs 0% to 100%.
Share of 316 completed flights by arrival against schedule.
11 of 87 late departures made up the time and arrived on time, 13% of them. In the other direction, 26 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 2047
The latest arrival of the period was on 13 August 2026, 4 hours 55 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The five worst days are spread across August, April, September and February, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 13 August 2026 | 4 hours 55 minutes | Late-arriving aircraft |
| 11 April 2026 | 4 hours 16 minutes | National Airspace System |
| 26 September 2025 | 3 hours 50 minutes | Extreme weather |
| 15 February 2026 | 3 hours 49 minutes | National Airspace System |
| 8 February 2026 | 3 hours 45 minutes | Late-arriving aircraft |
Delay causes
Why UA 2047 runs late
National Airspace System accounts for 46% of the 7,020 delay minutes carriers reported here, and the remaining four split what is left.
- 46%National Airspace System
- 45%Late-arriving aircraft
- 7%Carrier
- 3%Extreme weather
45% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 7,020 reported delay minutes here, that single category outweighs weather by 14 to one. The split is drawn from 7,020 delay minutes reported on UA 2047.
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
12.3% 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 three other city pairs in the data, including SFO to IAH (95), IAH to DCA (46) and LAX to LAS (21), but none flew often enough under UA 2047 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to LAS to SFO only.
One caution: this is a thin sample. 316 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 2047
For a booking, UA 2047 is a flight to put a long connection behind. 12.3% 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
- LAS to SFO, every carrier and departure
- SFO to LAS, the return direction
- United Airlines 574 on the same route66.1%
- United Airlines 2356 on the same route59.1%
- Frontier Airlines 4401 on the same route48.0%
- United Airlines 1799 on the same route52.8%
- Frontier Airlines 3801 on the same route60.1%
- Alaska Airlines 634 on the same route53.9%
- Harry Reid International (LAS) 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
- 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.