Carrier route record

UAEWR→LAS

United Airlines · Newark to Las Vegas

Flights: 2,478
Period: July 2025 to June 2026
Share of route: 83%
Carriers: 3

Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with United Airlines.

United on EWR to LAS lands a B, 3 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That is a workable record, not a spotless one. That rests on 2,478 flights, with a median arrival 11 minutes early.

The US average over the same twelve months is 77.6%, so there is little to separate United on EWR to LAS from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.

On time

81.0%

Arrivals under 15 minutes late, of 2,435 completed flights

Avg delay

72 min

Across delayed arrivals only, not all flights

Cancelled

1.41%

National rate is 1.81%

Whole route

80.1%

Every carrier on EWR to LAS, 2,992 flights

These figures cover 2,478 flights between July 2025 and June 2026. The median arrival is 11 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.

Carrier by carrier

United against every carrier on EWR to LAS

United flew 2,478 of the 2,992 flights on EWR to LAS, most of the route. Its 81.0% on time is about level with the route as a whole at 80.1%. Ranked by on-time rate it is first of three carriers on the route, where the range runs from United at 81.0% to Spirit at 74.7%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.

Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.

On-time performance by carrier on EWR to LAS
Airline	Flights	On time	Avg delay	Cancelled	Grade
United Airlines (this page)	2,478	81.0%	72 min	1.41%	B
JetBlue Airwaysthin sample	311	76.5%	75 min	2.89%	B
Spirit Airlinesthin sample	203	74.7%	110 min	2.46%	C

Flight by flight

United flight numbers on EWR to LAS

UA 44610:0081.7% · 341 flights

Departure window

When United runs best on this route

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 29 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am393 flights92.5%
8am–11am576 flights85.3%
11am–2pm404 flights79.2%
2pm–5pm356 flights79.6%
5pm–8pm576 flights76.5%
8pm–5am173 flights63.4%

Scale runs 55% to 100%. Rows with fewer than 30 flights show a dash.

The 8pm–5am window is where this operation falls apart: 63.4% on time, against 92.5% for the 5am–8am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 8am–11am window is the busiest, with 576 flights scheduled in it.

Across the year

United on EWR to LAS through the year

Darker means more delays. Figures are on-time percentages.May best, October worst

May is the best month on the calendar at 90.3% on time. Shoulder season thins the schedule and takes the summer weather with it, and the operation gets its margin back. November was the busiest month here, with 227 flights.

Across the week, Tuesday is the strongest day at 84.8% on time and Sunday the weakest at 74.7%. 10 points is a smaller lever than departure hour, but it is free.

Delay causes

Why United runs late on this route

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 33,000 reported delay minutes.

Late-arriving aircraft
37%
National Airspace System
27%
Carrier
27%
Extreme weather
8%

37% 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 33,000 reported delay minutes here, that single category outweighs weather by 5 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 33,355 reported delay minutes.

The practical consequence: the 5am–8am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 92.5% on time here.

Cancellations sit at 1.41% against a national 1.81%, which is ordinary. Diversions add another 0.32%.

Connections and stage length

What a delay here costs

7.3% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last a little over 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 return leg runs 82.0% on time across 2,478 flights, within about a point of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.

The sample behind these figures is 2,478 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.

What to do with this

Booking United on EWR to LAS

Put together: the calendar is the biggest lever here, not the carrier or the hour. May runs 90.3% on time and October 66.5%, a swing of 24 points. If the dates move at all, move them out of October before you think about anything else. 2,435 completed flights over 12 months sit behind that.

Where to go next

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.

Key figures