Route reliability record
EWR→LAX
Newark to Los Angeles
- Flights
- 4,750
- Period
- September 2025 to August 2026
- Distance
- 2,454 mi
- Carriers
- 4
This route sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 7 points worse than the national rate of 77.3%. The late ones land an hour and a half behind schedule. That rests on 4,750 EWR to LAX flights, of which Alaska Airlines flew 491 at 72.1% on time.
Best time to fly EWR to LAX: a 11am–2pm departure, ideally on a Wednesday. Flights in that window arrived on time 77.1% of the time and Wednesday flights 75.0%, against 70.7% for the route overall.
Alaska Airlines is the most reliable of the three carriers covered here at 72.1% on time across 491 flights.
Key figures
On time
70.7%
Arrivals under 15 minutes late, of 4,624 completed flights
Avg delay
82 min
Across delayed arrivals only, not all flights
Cancelled
2.46%
National rate is 1.89%
Best carrier
Alaska
72.1% on time across 491 flights
These figures cover 4,750 flights between September 2025 and August 2026. Beyond the headline rate, 12.4% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
Which airline is most reliable on EWR to LAX
The three 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 | 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
Flights on EWR to LAX
The flight numbers below flew this route at least 250 times in the period, busiest first. Each has its own record, with its schedule and delay causes.
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Best ways to make this trip
The most reliable ways to fly Newark to Los Angeles
Every airline on this route and on the routes between nearby airports, ranked by how often a scheduled flight actually operated and arrived on time. 4 of the top 5 use a different airport at one end.
| Option | Airline | Success | On time | Cancelled | Best departure | Most punctual flight |
|---|---|---|---|---|---|---|
| 1. EWR → SNANewark to Santa Ana | United Airlines | 83.0% | 84.7% | 2.02% | 5am–8am, Tue | — |
| 2. JFK → LAXNew York to Los Angeles | American Airlines | 76.5% | 78.6% | 2.61% | 5am–8am, Tue | AA 171 06:00 |
| 3. JFK → LAXNew York to Los Angeles | Delta Air Lines | 73.4% | 75.3% | 2.55% | 11am–2pm, Tue | DL 767 11:00 |
| 4. EWR → LAXNewark to Los Angeles | Alaska Airlines | 70.2% | 72.1% | 2.65% | 5pm–8pm, Wed | AS 287 19:29 |
| 5. JFK → LAXNew York to Los Angeles | JetBlue Airways | 70.2% | 72.5% | 3.19% | 5am–8am, Wed | B6 123 06:00 |
Success is the share of scheduled flights that operated and arrived less than 15 minutes late, so a cancelled flight counts against it. “(route)” means the best time comes from every carrier on the route rather than this airline alone.
Departure window
The best time of day to leave
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 16 points, against 2 points between the best and worst carrier.
- 5am–8am817 flights75.6%
- 8am–11am1,009 flights70.9%
- 11am–2pm374 flights77.1%
- 2pm–5pm691 flights70.6%
- 5pm–8pm1,236 flights70.3%
- 8pm–5am623 flights60.6%
Scale runs 50% to 85%.
The 8pm–5am window is where this operation falls apart: 60.6% 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 1,236 flights scheduled in it.
Explore
Filter EWR to LAX by airline, time, month and day
Pick a breakdown and a carrier. The dashed mark on each row is the same slice for every US flight.
On EWR to LAX, the best departure window is 11am–2pm at 77.1% on time and the worst is 8pm–5am at 60.6%, a wide gap of 16.5 points. All US flights leaving 11am–2pm ran 78.3%.
- 5–8am75.6%
- 8–11am70.9%
- 11am–2pm77.1%
- 2–5pm70.6%
- 5–8pm70.3%
- 8pm–5am60.6%
best all US flightsScale 50% to 95%.
Across the year
When delays peak on this route
This route's year swings by 22 points from best month to worst, which is wide. An annual average tells you very little about the week you are actually flying, so read the strip rather than the headline if your dates are fixed.
January is the weak month at 61.3% on time, against 83.5% 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. October was the busiest month here, with 482 flights.
Across the week, Wednesday is the strongest day at 75.0% on time and Sunday the weakest at 61.5%, a spread of 14 points.
Delay causes
Why this route gets delayed
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 111,000 reported delay minutes.
- 37%Carrier
- 35%Late-arriving aircraft
- 23%National Airspace System
- 4%Extreme weather
- 0%Security
35% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 111,000 reported delay minutes here, that single category outweighs weather by 9 to one. The split is drawn from 111,381 reported delay minutes.
The largest share of delay minutes, 37%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 42,000 of the 111,000 delay minutes reported here.
Cancellations sit at 2.46% against a national 1.89%, which is ordinary. Diversions add another 0.19%.
Connections and stage length
What a delay here actually costs
12.4% 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 79.1% on time across 4,748 flights, 8 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 8 points of difference.
The sample behind these figures is 4,750 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.
Work out the risk of missing a connection in LAX after this flight
What to do with this
Booking this route
Put together: the calendar is the biggest lever here, not the carrier or the hour. May runs 83.5% on time and January 61.3%, a swing of 22 points. If the dates move at all, move them out of January before you think about anything else. 4,624 completed flights over 12 months sit behind that.
Common questions
EWR to LAX questions
How often is EWR to LAX delayed?
Roughly one flight in three arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 29.3% of the 4,750 flights in this analysis, against 22.7% nationally. Delayed flights are late by an hour and a half on average.
Which airline is most reliable on EWR to LAX?
Alaska Airlines leads at 72.1% on time across 491 flights. JetBlue Airways is at the other end on 70.5%, a gap of 2 points. Sample size matters as much as the percentage: a rate built from a few hundred flights moves around far more than one built from ten thousand.
What time of day has the fewest delays on EWR to LAX?
The 11am–2pm departure window is the strongest at 77.1% on time. The 8pm–5am window is the weakest at 60.6%, 16 points behind. Later departures inherit delays from earlier flights the same aircraft has already flown, which is why the curve slopes the way it does.
How bad are January delays on EWR to LAX?
January is the weakest month at 61.3% on time, compared with 83.5% in May. Across the year that is 22 points between the best and worst months. Moving flexible dates out of that month is one of the few things that reliably helps.
Related
Where to go next
- LAX to EWR — the return legseparate record
- Newark Liberty International (EWR) delay statistics
- Los Angeles International (LAX) delay statistics
- Alaska Airlines on EWR to LAX72.1%
- United Airlines on EWR to LAX71.0%
- JetBlue Airways on EWR to LAX70.5%
- Spirit Airlines on EWR to LAX62.6%
- EWR to MCO, a related route77.9%
- SFO to LAX, a related route70.9%
- EWR to ATL, a related route76.9%
- Alaska Airlines on-time record72.1%
- United Airlines on-time record71.0%
- JetBlue Airways on-time record70.5%
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.05 million flight records
Direction matters. EWR to LAX and LAX to EWR are scored separately because they are separate operations, with different departure banks and different aircraft. Compare the return leg.
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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.