Carrier route record
UALAX→EWR
United Airlines · Los Angeles to Newark
- Flights
- 3,526
- Period
- September 2025 to August 2026
- Share of route
- 74%
- Carriers
- 4
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with United Airlines.
United on LAX to EWR lands a B, level with the national rate of 77.3%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That rests on 3,526 flights. The strongest carrier on the route with a full sample, Alaska Airlines, flew 490 at 91.6% on time.
The US average over the same twelve months is 77.3%, so there is little to separate United on LAX to EWR from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
77.7%
Arrivals under 15 minutes late, of 3,419 completed flights
Avg delay
77 min
Across delayed arrivals only, not all flights
Cancelled
1.76%
National rate is 1.89%
Whole route
79.1%
Every carrier on LAX to EWR, 4,748 flights
These figures cover 3,526 flights between September 2025 and August 2026. Beyond the headline rate, 9.1% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
United against every carrier on LAX to EWR
United flew 3,526 of the 4,748 flights on LAX to EWR, most of the route. Its 77.7% on time is about level with the route as a whole at 79.1%. Ranked by on-time rate it is number three of four carriers on the route, where the range runs from Alaska at 91.6% to Spirit at 75.1%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.
The choice of carrier is not cosmetic here. Alaska Airlines arrives on time 91.6% of the time; JetBlue Airways manages 78.4%. Sample sizes sit next to every figure, because a two-point gap across 480 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Alaska Airlines | 490 | 91.6% | 58 min | 1.63% | A |
| JetBlue Airways | 480 | 78.4% | 79 min | 3.54% | B− |
| United Airlines (this page) | 3,526 | 77.7% | 77 min | 1.76% | B |
| Spirit Airlinesthin sample | 252 | 75.1% | 51 min | 5.16% | B− |
JetBlue Airways cancels 3.5% of what it schedules here, the highest in the table. A cancelled flight never appears in an on-time rate, so read that column alongside the punctuality one rather than after it.
Flight by flight
United flight numbers on LAX to EWR
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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 28 points, against 13 points between the best and worst carrier.
- 5am–8am571 flights93.6%
- 8am–11am731 flights76.8%
- 11am–2pm1,049 flights66.0%
- 2pm–5pm404 flights79.2%
- 5pm–8pm—
- 8pm–5am771 flights82.0%
Scale runs 60% to 100%. Rows with fewer than 30 flights show a dash.
The weak window here is the middle of the day, not the evening: 11am–2pm runs 66.0% on time against 93.6% for 5am–8am. That shape usually means a departure bank rather than an accumulating delay, so the recovery later in the afternoon is real rather than noise. The 11am–2pm window is the busiest, with 1,049 flights scheduled in it.
Across the year
United on LAX to EWR through the year
May is the best month on the calendar at 90.2% 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 324 flights.
Across the week, Tuesday is the strongest day at 82.5% on time and Sunday the weakest at 72.8%, a spread of 10 points.
Arrival by arrival
How late United on LAX to EWR runs when it is late
United on LAX to EWR often beats the schedule: 1,424 of 3,419 completed flights, 42%, arrived 15 minutes or more early. The 761 late arrivals split 250 under half an hour, 200 between 30 and 60 minutes, and 311 an hour or more.
- 15+ min early1,424 flights41.6%
- Within 15 min1,234 flights36.1%
- 15–29 min late250 flights7.3%
- 30–59 min late200 flights5.8%
- 1–2 hours late179 flights5.2%
- 2+ hours late132 flights3.9%
Scale runs 0% to 100%.
Share of 3,419 completed flights by arrival against schedule.
211 of 806 late departures made up the time and arrived on time, 26% of them. 166 flights left on time and still arrived late.
The worst days
Worst days for United on LAX to EWR
The latest arrival of the period was on 28 February 2026, 15 hours 42 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). On three of the five worst days the largest share was filed as a late-arriving aircraft.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 28 February 2026 | 15 hours 42 minutes | Carrier |
| 14 December 2025 | 14 hours 46 minutes | Late-arriving aircraft |
| 20 May 2026 | 11 hours 38 minutes | Late-arriving aircraft |
| 4 April 2026 | 11 hours 36 minutes | Carrier |
| 30 March 2026 | 7 hours 59 minutes | Late-arriving aircraft |
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 59,000 reported delay minutes.
- 34%National Airspace System
- 33%Late-arriving aircraft
- 32%Carrier
- 1%Extreme weather
34% 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 20,000 minutes out of 59,000, against a national NAS share of 21%. The split is drawn from 58,759 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 93.6% on time here.
Cancellations sit at 1.76% against a national 1.89%, which is ordinary. Diversions add another 1.28%.
Connections and stage length
What a delay here costs
9.1% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
At 2,454 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 is a different operation and performs like one: it runs 71.0% on time across 3,527 flights, 7 points below this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 7 points of difference.
The sample behind these figures is 3,526 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 LAX to EWR
Put together: the calendar is the biggest lever here, not the carrier or the hour. May runs 90.2% on time and March 68.7%, a swing of 22 points. If the dates move at all, move them out of March before you think about anything else. 3,419 completed flights over 12 months sit behind that.
Related
Where to go next
- LAX to EWR, every carrier
- United on EWR to LAX, the return leg
- Alaska Airlines on LAX to EWR91.6%
- JetBlue Airways on LAX to EWR78.4%
- Spirit Airlines on LAX to EWR75.1%
- United Airlines network-wide record
- Los Angeles International (LAX) delay statistics
- Newark Liberty International (EWR) delay statistics
- Why the first flight of the morning is statistically safest
- Same route, different airline: where the carrier you pick matters most
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.