Route reliability record
EWR→LAS
Newark to Las Vegas
- Flights
- 2,863
- Period
- September 2025 to August 2026
- Distance
- 2,227 mi
- Carriers
- 3
This route lands a B, 3 points better than the national rate of 77.3%. 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 rests on 2,863 EWR to LAS flights, with a median arrival 10 minutes early.
Best time to fly EWR to LAS: a 5am–8am departure, ideally on a Wednesday. Flights in that window arrived on time 90.0% of the time and Wednesday flights 83.0%, against 80.0% for the route overall.
The US average over the same twelve months is 77.3%, so there is little to separate this route from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
80.0%
Arrivals under 15 minutes late, of 2,804 completed flights
Avg delay
74 min
Across delayed arrivals only, not all flights
Cancelled
1.82%
National rate is 1.89%
Best carrier
United
80.5% on time across 2,459 flights
These figures cover 2,863 flights between September 2025 and August 2026. The median arrival is 10 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.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Carrier by carrier
Which airline is most reliable on EWR to LAS
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.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| United Airlines | 2,459 | 80.5% | 72 min | 1.63% | B |
| Spirit Airlinesthin sample | 93 | 77.8% | 98 min | 3.23% | B− |
| JetBlue Airwaysthin sample | 311 | 76.5% | 75 min | 2.89% | B |
Flight by flight
Flights on EWR to LAS
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.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Best ways to make this trip
The most reliable ways to fly Newark to Las Vegas
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. 3 of the top 4 use a different airport at one end.
| Option | Airline | Success | On time | Cancelled | Best departure | Most punctual flight |
|---|---|---|---|---|---|---|
| 1. JFK → LASNew York to Las Vegas | American Airlines | 79.3% | 81.0% | 2.11% | 5am–8am, Wed | — |
| 2. EWR → LASNewark to Las Vegas | United Airlines | 79.2% | 80.5% | 1.63% | 5am–8am, Wed | UA 446 10:00 |
| 3. JFK → LASNew York to Las Vegas | JetBlue Airways | 77.9% | 80.6% | 3.33% | 5am–8am, Wed | B6 411 06:00 |
| 4. JFK → LASNew York to Las Vegas | Delta Air Lines | 74.3% | 76.4% | 2.74% | 5am–8am, Tue | DL 806 16:45 |
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 24 points, against half a point between the best and worst carrier.
- 5am–8am502 flights90.0%
- 8am–11am600 flights84.1%
- 11am–2pm452 flights79.2%
- 2pm–5pm440 flights76.4%
- 5pm–8pm596 flights76.8%
- 8pm–5am273 flights66.3%
Scale runs 60% to 95%.
Book the early departure. Flights leaving between 5am–8am arrive on time 90.0% of the time, against 66.3% for the overnight window. That is 24 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 8am–11am window is the busiest, with 600 flights scheduled in it.
Explore
Filter EWR to LAS 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 LAS, the best departure window is 5am–8am at 90.0% on time and the worst is 8pm–5am at 66.3%, a wide gap of 23.7 points. All US flights leaving 5am–8am ran 89.3%.
- 5–8am90.0%
- 8–11am84.1%
- 11am–2pm79.2%
- 2–5pm76.4%
- 5–8pm76.8%
- 8pm–5am66.3%
best all US flightsScale 60% to 95%.
Across the year
When delays peak on this route
This route's year swings by 19 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.
May is the best month on the calendar at 89.2% on time. Shoulder season thins the schedule and takes the summer weather with it, and the operation gets its margin back. April was the busiest month here, with 285 flights.
Across the week, Wednesday is the strongest day at 83.0% on time and Sunday the weakest at 75.1%, a spread of 8 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 41,000 reported delay minutes.
- 33%Late-arriving aircraft
- 29%National Airspace System
- 27%Carrier
- 11%Extreme weather
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 90.0% on time here. The split is drawn from 41,417 reported delay minutes.
No single cause dominates. late-arriving aircraft at 33%, national airspace system at 29% and carrier at 27% split the 41,000 reported delay minutes between them. An even spread like this usually means the operation is running close to its designed capacity with no one obvious weak point, and it is the hardest pattern for a traveller to route around.
Cancellations sit at 1.82% against a national 1.89%, which is ordinary. Diversions add another 0.24%.
Connections and stage length
What a delay here actually costs
7.7% of arrivals land an hour or more late, close to the national 8.3%, so 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 81.5% on time across 2,861 flights, within 2 points 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 2,863 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 LAS 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 89.2% on time and October 69.9%, a swing of 19 points. If the dates move at all, move them out of October before you think about anything else. 2,804 completed flights over 12 months sit behind that.
Common questions
EWR to LAS questions
How often is EWR to LAS delayed?
About one flight in five arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 20.0% of the 2,863 flights in this analysis, against 22.7% nationally. Delayed flights are late by a little over an hour on average.
How reliable is EWR to LAS compared with the rest of the country?
80.0% of flights arrive on time here against a national 77.3%, a difference of 3 points in its favour. That is worth a B on this site's grading scale.
What time of day has the fewest delays on EWR to LAS?
The 5am–8am departure window is the strongest at 90.0% on time. The 8pm–5am window is the weakest at 66.3%, 24 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 October delays on EWR to LAS?
October is the weakest month at 69.9% on time, compared with 89.2% in May. Across the year that is 19 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
- LAS to EWR — the return legseparate record
- Newark Liberty International (EWR) delay statistics
- Harry Reid International (LAS) delay statistics
- United Airlines on EWR to LAS80.5%
- JetBlue Airways on EWR to LAS76.5%
- EWR to MCO, a related route77.9%
- LAX to LAS, a related route75.8%
- EWR to ATL, a related route76.9%
- United Airlines on-time record80.5%
- Spirit Airlines on-time record77.8%
- JetBlue Airways on-time record76.5%
- 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 LAS and LAS to EWR are scored separately because they are separate operations, with different departure banks and different aircraft. Compare the return leg.
Embed EWR to LAS’s on-time badge on your site
Paste this into a web page. The badge shows the current on-time rate, cancellation rate and grade, and updates every month. Preview it, or build a badge for another route or airport.
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.