Flight number record
UA 446
United Airlines · Newark to Las Vegas
- Route
- EWR → LAS
- Departs
- 10:00
- Flights
- 341
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 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 77.6%. Roughly one flight in five arrives 15 minutes late or worse, and those flights are late by roughly 45 minutes on average. That is a workable record, not a spotless one. That rests on 341 flights, with a median arrival 9 minutes early.
Set against the rest of the country, UA 446's record is 4 points better than the US average of 77.6%. That gap is worth roughly 41 fewer late arrivals for every thousand flights.
Key figures
On time
81.7%
Arrivals under 15 minutes late, of 333 completed flights
Avg delay
47 min
Across delayed arrivals only, not all flights
Cancelled
1.47%
National rate is 1.81%
1 hour+ late
4.5%
National rate is 8.1%
These figures cover 341 flights between July 2025 and June 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.
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 128 of 341 flights, with 10:30 (60 flights) and 11:00 (38 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 10:00128 flights37.5%
- Departs 10:3060 flights17.6%
- Departs 11:0038 flights11.1%
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 10:00 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and UA 446 runs 2 points worse at 81.7%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
Against the route
UA 446 next to EWR to LAS
Every carrier on EWR to LAS combined arrived on time 80.1% of the time across 2,992 flights, so UA 446 is 2 points ahead of it. United flew 2,478 flights on the same city pair under all its flight numbers, including this one, and those ran 81.0% on time. Across its whole network United Airlines managed 79.0%, which this flight beats by 3 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 446thin sample | 341 | 81.7% | 47 min | 1.47% | B |
| All United Airlines on EWR–LAS | 2,478 | 81.0% | 72 min | 1.41% | B |
| All carriers on EWR–LAS | 2,992 | 80.1% | 76 min | 1.64% | B |
| United Airlines, whole network | 821,041 | 79.0% | 72 min | 1.01% | B |
Across the year
UA 446 quarter by quarter
UA 446 did not run the same all year. Its best quarter was Apr–Jun 2026 at 92.8% on time and its weakest Oct–Dec 2025 at 63.2%, a swing of 30 points on roughly 85 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 202592 flights89.0%
- Oct–Dec 202589 flights63.2%
- Jan–Mar 202690 flights83.7%
- Apr–Jun 202670 flights92.8%
Scale runs 55% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, UA 446 ranged from 77.3% on Monday to 85.1% on Wednesday. With about 49 flights behind each day, a spread of 8 points is inside normal variation, so the day you fly is not worth changing for this flight.
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 2,842 reported delay minutes.
- 37%National Airspace System
- 36%Late-arriving aircraft
- 26%Carrier
- 1%Extreme weather
36% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 2,842 reported delay minutes here, that single category outweighs weather by 36 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 2,842 delay minutes reported on UA 446.
Cancellations sit at 1.47% against a national 1.81%, which is ordinary. Diversions add another 0.88%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 4.5% land an hour or more behind schedule, against 8.1% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
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), FCA to EWR (2) and LAS to LAX (1), 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. 341 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 81.7% on time with 1.47% cancelled over 341 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.