Flight number record
UA 574
United Airlines · Las Vegas to San Francisco
- Route
- LAS → SFO
- Departs
- 11:07
- Flights
- 334
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s UA 574, check with United Airlines.
UA 574 sits in the middle of the pack with a C+. About seven flights in ten arrive on time by the DOT's definition, 9 points worse than the national rate of 77.6%. The late ones land about 55 minutes behind schedule. That rests on 334 flights, with a median arrival 1 minute early.
The national on-time rate over the same period is 77.6%, so UA 574 runs 9 points behind the country as a whole. Across a thousand flights that is about 91 extra late arrivals.
Key figures
On time
68.5%
Arrivals under 15 minutes late, of 333 completed flights
Avg delay
54 min
Across delayed arrivals only, not all flights
Cancelled
0.30%
National rate is 1.81%
1 hour+ late
9.6%
National rate is 8.1%
These figures cover 334 flights between July 2025 and June 2026. Beyond the headline rate, 9.6% 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 574 flies
UA 574 flies LAS to SFO without a single fixed slot. Its most common scheduled departure was 11:07, used on 52 of 334 flights, with 11:10 (37 flights) and 11:08 (35 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 11:0752 flights15.6%
- Departs 11:1037 flights11.1%
- Departs 11:0835 flights10.5%
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 11:07 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and UA 574 runs 10 points worse at 68.5%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
Against the route
UA 574 next to LAS to SFO
Every carrier on LAS to SFO combined arrived on time 62.8% of the time across 6,060 flights, so UA 574 is 6 points ahead of it. United flew 2,756 flights on the same city pair under all its flight numbers, including this one, and those ran 67.5% on time. Across its whole network United Airlines managed 79.0%, which this flight trails by 11 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 574thin sample | 334 | 68.5% | 54 min | 0.30% | C+ |
| All United Airlines on LAS–SFO | 2,756 | 67.5% | 61 min | 0.44% | C+ |
| All carriers on LAS–SFO | 6,060 | 62.8% | 59 min | 0.68% | D+ |
| United Airlines, whole network | 821,041 | 79.0% | 72 min | 1.01% | B |
Across the year
UA 574 quarter by quarter
UA 574 did not run the same all year. Its best quarter was Jul–Sep 2025 at 91.8% on time and its weakest Apr–Jun 2026 at 42.9%, a swing of 49 points on roughly 84 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 202561 flights91.8%
- Oct–Dec 202592 flights70.3%
- Jan–Mar 202690 flights76.7%
- Apr–Jun 202691 flights42.9%
Scale runs 35% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, UA 574 did best on Saturday at 83.3% on time and worst on Friday at 59.6%. Each day rests on about 48 flights, so a gap of 24 points is worth noticing but could still narrow in another year.
Delay causes
Why UA 574 runs late
One category carries most of the weight here. National Airspace System accounts for 64% of the 5,684 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.
- 64%National Airspace System
- 22%Late-arriving aircraft
- 14%Carrier
64% 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 3,652 minutes out of 5,684, against a national NAS share of 21%. The split is drawn from 5,684 delay minutes reported on UA 574.
Cancellations are rare at 0.30%, below the national 1.81% 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
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 9.6% 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.
UA 574 is not only a LAS to SFO flight. It also flew ORD to LAS (273 flights, 96.0% on time) often enough to be scored on its own. Airlines attach one number to several legs of an aircraft's day, and each leg keeps its own record here, so check which city pair is on your booking before reading a rate.
One caution: this is a thin sample. 334 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.
| Also flown as | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| ORD to LASthin sample | 273 | 96.0% | 56 min | 0.00% | A+ |
What to do with this
Booking UA 574
For a booking, read UA 574 as 68.5% on time with 0.30% cancelled over 334 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- LAS to SFO, every carrier and departure
- SFO to LAS, the return direction
- United Airlines 2047 on the same route70.9%
- United Airlines 2356 on the same route62.6%
- Frontier Airlines 4401 on the same route52.5%
- Alaska Airlines 613 on the same route74.2%
- Alaska Airlines 634 on the same route59.1%
- 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
- 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.