Flight profile · United Airlines
UA574
Las Vegas (LAS) to San Francisco (SFO) · scheduled 12:10 PM – 1:47 PM
How UA574 performs
1,030 operations, July 2023 – July 2026.
UA574 arrived on time 76.2% of the time, against 66.4% for all LAS → SFO flights, so this departure is 9.8 percentage points better than the route as a whole. Against United Airlines’ own flights on this route it is 3.9 points better.
Source: US DOT Bureau of Transportation Statistics · 1,030 operations, July 2023 – July 2026 · If UA574 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
What stands out
How UA574 compares to other flight numbers, not just to itself.
Which day you fly matters unusually much here, a wider weekday spread than 95% of 1,710 comparable flight numbers.
86.5% on time on a typical Tuesday, against 67.1% on a Thursday.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · The one thing about this specific departure that ranks most extreme against every other published flight number, out of everything FlyerIntel checks — shown only when something clears a real statistical bar, not for every flight.
Where UA574 is right now
A live reading, only if you ask for it. It is not part of the reliability record above.
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Against the rest of the route
| Flight or route | On time | Cancelled | Median delay | Severe | Flights |
|---|---|---|---|---|---|
| UA574 | 76.2% | 0.29% | -5 min | 6.9% | 1,030 |
| United Airlines on LAS → SFO | 72.3% | 0.93% | -4 min | 8.8% | 7,609 |
| All LAS → SFO flights | 66.4% | 1.01% | 0 min | 10.6% | 18,262 |
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026
Why UA574 runs late
Where US DOT attributed the delay minutes on this flight.
airspace and airport capacity, including weather-driven flow control
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding and fueling, all within the carrier’s control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for UA574 on LAS → SFO. Only delays of 15 minutes or more are attributed.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
Does a late aircraft delay this flight?
How often the plane that flies UA574 comes in late, and what that does to the departure.
When the aircraft came in 15 or more minutes late, UA574 pushed back an average of 44 minutes late; when it came in on time or early, an average of 3 minutes late.
Each departure is matched to the flight the same aircraft flew into LAS just before it, using the tail number in the DOT file, 1,011 of 1,027 departures in all. A departure is left out when that flight is unknown, was cancelled or diverted, or the aircraft had sat for more than 12 hours. A flight the airline cancelled never left and is not in the count, and one flown by a substitute aircraft is matched to the aircraft that flew it, not to the one first planned.
Against the network at the same turn length
| Share of departures | Inbound landed 15+ late | Left 15+ late after a late inbound | Left 15+ late after an on-time inbound |
|---|---|---|---|
| UA574 | 13% | 64% | 12% |
| Network, same turn | 17% | 68% | 9% |
The schedule leaves a normal turn: enough time to clean and board if the aircraft is on time, little to spare if it is not.
The network row is every flight with a scheduled turn of 60 to 89 minutes. How often UA574’s aircraft landed 15 or more minutes late is lower than the network’s and, once the aircraft was late, how often UA574 left 15 or more minutes late is lower than the network’s.
More: Which Flight Numbers Pay for a Late Aircraft lists the flight numbers that pass a late aircraft on.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
From pushback to gate
When it leaves LAS late, does that still matter by the time it reaches SFO?
UA574 pushes back an average of 10.1 minutes late and reaches the gate at SFO an average of 7.8 minutes late. The 2.3 minutes between those two figures are slack the published schedule already carries, which is why a late pushback on this flight does not reliably become a late arrival. It spends 25.6 minutes on the taxiways at LAS, 5.4 minutes longer than a typical LAS departure in the same hour.
On arrival at SFO, UA574 spends 6.4 min taxiing from touchdown to the gate — ground time a connecting passenger sits through before they can even leave the aircraft, on top of however late the flight itself ran. That is 1.5 minutes shorter than a typical SFO arrival (7.9 min).
Departure delay is averaged over every pushback and arrival delay over every completed arrival, so the two counts differ by the flights that never reached SFO. Taxi-out is gate to wheels up and sits inside the scheduled block rather than on top of it; the comparison is 33,573 departures from LAS scheduled in the clock hour UA574 most often leaves in. Taxi-in is landing to gate, compared against every arrival FlyerIntel has on file at SFO (436,060 flights), not just UA574’s own. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026
The hour it leaves LAS
Part of any flight’s record belongs to the clock rather than to the flight. UA574 has one departure time, so this is what that time is worth.
On-time arrival rate. 33,573 departures from LAS are scheduled in the 12 PM–1 PM hour over the period, against 569,617 across the whole day.
UA574 is scheduled out of LAS at 12:10 PM, in the 12 PM–1 PM bank. Departures from LAS in that hour arrive on time 76.1% of the time against 78.0% across the airport’s whole day, so the hour UA574 leaves in is an ordinary one for LAS and explains nothing about its record either way.
The two airport figures cover every departure from LAS to every destination, so they describe the slot rather than this journey — the like-for-like comparison against the route is above. Hours are scheduled local, and a number whose schedule moved between banks inside the period has no single hour and is not described here at all. Why the hour matters.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Hours below 120 departures are not scored.
By day of week
Does UA574 run worse on particular days?
Tuesday is historically the most reliable day and Thursday the least, a gap of 19.4 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Days with fewer than 120 operations are not scored.
Other routes UA574 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| ORD→LAS Chicago to Las Vegas | December 19, 2024 – July 31, 2026 | 434 | 96.5% |
| SFO→PHX San Francisco to Phoenix | March 5, 2026 – July 31, 2026 | 148 | 72.6% |
| SFO→BUR San Francisco to Burbank | December 2–17, 2025 | 16 | — |
| SFO→ATL San Francisco to Atlanta | November 28–30, 2025 | 3 | — |
| SFO→RDM San Francisco to Redmond | August 1–18, 2025 | 13 | — |
| SFO→EWR San Francisco to Newark | May 23, 2024 – April 30, 2025 | 56 | — |
| SFO→ORD San Francisco to Chicago | March 7, 2024 – March 29, 2025 | 48 | — |
| SFO→BOS San Francisco to Boston | June 27, 2024 – August 18, 2024 | 53 | — |
| SFO→SBA San Francisco to Santa Barbara | February 15, 2024 – March 6, 2024 | 21 | — |
| LAX→LAS Los Angeles to Las Vegas | January 1–8, 2024 | 2 | — |
| IAH→ORD Houston to Chicago | January 7, 2024 | 1 | — |
| EWR→JAX Newark to Jacksonville | December 24–31, 2023 | 2 | — |
| ORD→SJC Chicago to San Jose | November 23, 2023 | 1 | — |
Because the same number has served different journeys, the statistics above describe only the route UA574 currently operates. Blending them would produce an average of two different flights.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
45 min late
against a median of 5 min early
Percentiles over 1,030 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
Other flights on this route
Same airports, same journey, different odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| UA574 this flight | United Airlines | 76.2% | 5 min early | 1,030 |
| UA2047 | United Airlines | 73.6% | 4 min early | 1,027 |
| AS613 | Alaska Airlines | 72.3% | 5 min early | 926 |
| F93019 | Frontier Airlines | 64.8% | 0 min early | 742 |
| UA2356 | United Airlines | 61.1% | 7 min late | 789 |
| F94401 | Frontier Airlines | 54.9% | 7 min late | 695 |
Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. UA574 is placed in the same ordering rather than left out of it; the rows around it are the most punctual departures on the route, not all of them, so this is a comparison and not a rank. Schedules change; confirm the departure still operates before booking around this.
Data and methodology
Calculated by FlyerIntel from 1,030 records of UA574 operating LAS → SFO, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.
Full methodology · Data sources · Report a problem
Related research: Most and Least Reliable Flight Numbers · The Delay You Inherit · Making Up Time in the Air
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