Flight number record
UA 446
United Airlines · Newark to Las Vegas
- Route
- EWR → LAS
- Departs
- 10:00
- Flights
- 335
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 446, check with United Airlines.
UA 446 lands a B, 4 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by about an hour on average. That rests on 335 flights, with a median arrival 9 minutes early.
Key figures
On time
81.1%
Arrivals under 15 minutes late, of 328 completed flights
Avg delay
63 min
Across delayed arrivals only, not all flights
Cancelled
1.49%
National rate is 1.89%
1 hour+ late
5.8%
National rate is 8.3%
These figures cover 335 flights between September 2025 and August 2026. The median arrival is 9 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 446 flies
UA 446 flies EWR to LAS without a single fixed slot. Its most common scheduled departure was 10:00, used on 116 of 335 flights, with 10:54 (40 flights) next.
- Departs 10:00116 flights34.6%
- Departs 10:5440 flights11.9%
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 10:00 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and UA 446 runs 3 points worse at 81.1%. 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 446 next to EWR to LAS
Every carrier on EWR to LAS combined arrived on time 80.0% of the time across 2,863 flights, so UA 446 is about level with it. United flew 2,459 flights on the same city pair under all its flight numbers, including this one, and those ran 80.5% on time. Across its whole network United Airlines managed 78.8%, which this flight beats by 2 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 446thin sample | 335 | 81.1% | 63 min | 1.49% | B |
| All United Airlines on EWR–LAS | 2,459 | 80.5% | 72 min | 1.63% | B |
| All carriers on EWR–LAS | 2,863 | 80.0% | 74 min | 1.82% | B |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 446 quarter by quarter
UA 446 did not run the same all year. Its best quarter was Jul–Sep 2025 at 96.7% on time and its weakest Oct–Dec 2025 at 63.2%, a swing of 34 points on roughly 67 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 flights96.7%
- Oct–Dec 202589 flights63.2%
- Jan–Mar 202690 flights83.7%
- Apr–Jun 202670 flights92.8%
- Jul–Sep 202656 flights82.1%
Scale runs 55% to 100%.
By weekday, UA 446 did best on Wednesday at 87.2% on time and worst on Monday at 73.3%. Each day rests on about 48 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 446 runs when it is late
UA 446 often beats the schedule: 134 of 328 completed flights, 41%, arrived 15 minutes or more early. The 62 late arrivals split 26 under half an hour, 17 between 30 and 60 minutes, and 19 an hour or more.
- 15+ min early134 flights40.9%
- Within 15 min132 flights40.2%
- 15–29 min late26 flights7.9%
- 30–59 min late17 flights5.2%
- 1–2 hours late10 flights3.0%
- 2+ hours late9 flights2.7%
Scale runs 0% to 100%.
Share of 328 completed flights by arrival against schedule.
8 of 40 late departures made up the time and arrived on time, 20% of them. In the other direction, 30 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 LAS.
The worst days
Worst days for UA 446
The latest arrival of the period was on 21 July 2026, 11 hours 14 minutes behind schedule; most of its delay minutes were filed as extreme weather. Three of the five worst days fell in July 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 21 July 2026 | 11 hours 14 minutes | Extreme weather |
| 19 July 2026 | 3 hours 25 minutes | Late-arriving aircraft |
| 17 August 2026 | 2 hours 59 minutes | Late-arriving aircraft |
| 4 December 2025 | 2 hours 40 minutes | Late-arriving aircraft |
| 29 July 2026 | 2 hours 36 minutes | Late-arriving aircraft |
Delay causes
Why UA 446 runs late
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 3,907 reported delay minutes.
- 37%Late-arriving aircraft
- 27%National Airspace System
- 20%Carrier
- 15%Extreme weather
Extreme weather accounts for 15% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.5 times the usual weather exposure. The split is drawn from 3,907 delay minutes reported on UA 446.
Cancellations sit at 1.49% against a national 1.89%, which is ordinary. Diversions add another 0.60%.
Connections and routes
What a delay on this flight costs
5.8% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.
At 2,227 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 three other city pairs in the data, including LAS to IAH (21), LAS to LAX (7) and FCA to EWR (2), but none flew often enough under UA 446 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to EWR to LAS only.
One caution: this is a thin sample. 335 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 446
For a booking, read UA 446 as 81.1% on time with 1.49% cancelled over 335 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- EWR to LAS, every carrier and departure
- LAS to EWR, the return direction
- Newark Liberty International (EWR) delay statistics
- Harry Reid International (LAS) 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.