Carrier route record
UAEWR→LAX
United Airlines · Newark to Los Angeles
- Flights
- 3,527
- 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 EWR to LAX sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 6 points worse than the national rate of 77.3%. The late ones land an hour and a half behind schedule. That rests on 3,527 flights. The strongest carrier on the route with a full sample, Alaska Airlines, flew 491 at 72.1% on time.
The national on-time rate over the same period is 77.3%, so United on EWR to LAX runs 6 points behind the country as a whole. Across a thousand flights that is about 63 extra late arrivals.
Key figures
On time
71.0%
Arrivals under 15 minutes late, of 3,453 completed flights
Avg delay
84 min
Across delayed arrivals only, not all flights
Cancelled
1.93%
National rate is 1.89%
Whole route
70.7%
Every carrier on EWR to LAX, 4,750 flights
These figures cover 3,527 flights between September 2025 and August 2026. Beyond the headline rate, 12.0% 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 EWR to LAX
United flew 3,527 of the 4,750 flights on EWR to LAX, most of the route. Its 71.0% on time is about level with the route as a whole at 70.7%. Ranked by on-time rate it is number two of four carriers on the route, where the range runs from Alaska at 72.1% to Spirit at 62.6%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.
The two carriers here are closely matched: 2 points separate the best from the worst. At that spread, schedule and price are better tie-breakers than reliability. Sample sizes are shown so you can see which rows are worth weighing.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Alaska Airlines | 491 | 72.1% | 71 min | 2.65% | C |
| United Airlines (this page) | 3,527 | 71.0% | 84 min | 1.93% | C |
| JetBlue Airways | 480 | 70.5% | 79 min | 3.33% | C− |
| Spirit Airlinesthin sample | 252 | 62.6% | 82 min | 7.94% | D− |
JetBlue Airways cancels 3.3% 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 EWR to LAX
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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 21 points, against 2 points between the best and worst carrier.
- 5am–8am688 flights75.9%
- 8am–11am729 flights70.5%
- 11am–2pm374 flights77.1%
- 2pm–5pm648 flights71.4%
- 5pm–8pm806 flights69.5%
- 8pm–5am282 flights56.0%
Scale runs 50% to 85%.
The 8pm–5am window is where this operation falls apart: 56.0% on time, against 77.1% for the 11am–2pm 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 5pm–8pm window is the busiest, with 806 flights scheduled in it.
Across the year
United on EWR to LAX through the year
January is the weak month at 58.2% on time, against 83.1% in May. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. November was the busiest month here, with 324 flights.
Across the week, Monday is the strongest day at 75.6% on time and Sunday the weakest at 60.9%, a spread of 15 points.
Arrival by arrival
How late United on EWR to LAX runs when it is late
United on EWR to LAX often beats the schedule: 944 of 3,453 completed flights, 27%, arrived 15 minutes or more early. The 1,000 late arrivals split 304 under half an hour, 281 between 30 and 60 minutes, and 415 an hour or more.
- 15+ min early944 flights27.3%
- Within 15 min1,509 flights43.7%
- 15–29 min late304 flights8.8%
- 30–59 min late281 flights8.1%
- 1–2 hours late209 flights6.1%
- 2+ hours late206 flights6.0%
Scale runs 0% to 100%.
Share of 3,453 completed flights by arrival against schedule.
238 of 972 late departures made up the time and arrived on time, 24% of them. In the other direction, 266 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 LAX.
The worst days
Worst days for United on EWR to LAX
The latest arrival of the period was on 6 August 2026, 15 hours 39 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. On three of the five worst days the largest share was filed as carrier-caused (crew, maintenance, fuelling, baggage).
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 6 August 2026 | 15 hours 39 minutes | Late-arriving aircraft |
| 20 May 2026 | 15 hours 5 minutes | Carrier |
| 9 December 2025 | 14 hours 59 minutes | Carrier |
| 16 August 2026 | 14 hours 44 minutes | Carrier |
| 28 June 2026 | 14 hours 32 minutes | Late-arriving aircraft |
Delay causes
Why United runs late on this route
Carrier accounts for 43% of the 84,000 delay minutes carriers reported here, and the remaining four split what is left.
- 43%Carrier
- 34%Late-arriving aircraft
- 19%National Airspace System
- 4%Extreme weather
The largest share of delay minutes, 43%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 36,000 of the 84,000 delay minutes reported here. The split is drawn from 84,073 reported delay minutes.
Cancellations sit at 1.93% against a national 1.89%, which is ordinary. Diversions add another 0.17%.
Connections and stage length
What a delay here costs
12.0% 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 77.7% on time across 3,526 flights, 7 points above 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 3,527 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 LAX
Put together: the calendar is the biggest lever here, not the carrier or the hour. May runs 83.1% on time and January 58.2%, a swing of 25 points. If the dates move at all, move them out of January before you think about anything else. 3,453 completed flights over 12 months sit behind that.
Related
Where to go next
- EWR to LAX, every carrier
- United on LAX to EWR, the return leg
- Alaska Airlines on EWR to LAX72.1%
- JetBlue Airways on EWR to LAX70.5%
- Spirit Airlines on EWR to LAX62.6%
- United Airlines network-wide record
- Newark Liberty International (EWR) delay statistics
- Los Angeles International (LAX) delay statistics
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.05 million flight records
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.