Carrier route record

NKEWR→LAS

Spirit Airlines · Newark to Las Vegas

Flights: 203
Period: July 2025 to June 2026
Share of route: 7%
Carriers: 3

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

Spirit on EWR to LAS sits in the middle of the pack with a C. Close to three flights in four arrive on time by the DOT's definition, 3 points worse than the national rate of 77.6%. The late ones land close to two hours behind schedule. That rests on 203 flights, with a median arrival 7 minutes early.

The US average over the same twelve months is 77.6%, so there is little to separate Spirit 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

74.7%

Arrivals under 15 minutes late, of 198 completed flights

Avg delay

110 min

Across delayed arrivals only, not all flights

Cancelled

2.46%

National rate is 1.81%

Whole route

80.1%

Every carrier on EWR to LAS, 2,992 flights

These figures cover 203 flights between July 2025 and June 2026. Beyond the headline rate, 12.1% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

Carrier by carrier

Spirit against every carrier on EWR to LAS

Spirit flew 203 of the 2,992 flights on EWR to LAS, about 7% of it. Its 74.7% on time is 5 points worse than the route as a whole, which runs 80.1%. Ranked by on-time rate it is last of three carriers on the route, where the range runs from United at 81.0% to Spirit at 74.7%. One 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	2,478	81.0%	72 min	1.41%	B
JetBlue Airwaysthin sample	311	76.5%	75 min	2.89%	B
Spirit Airlines (this page)thin sample	203	74.7%	110 min	2.46%	C

Departure window

When Spirit runs best on this route

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 36 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–8am112 flights89.2%
8am–11am—
11am–2pm2 flights—
2pm–5pm17 flights—
5pm–8pm70 flights53.0%
8pm–5am2 flights—

Scale runs 45% to 95%. Rows with fewer than 30 flights show a dash.

The 5pm–8pm window is where this operation falls apart: 53.0% on time, against 89.2% 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 5am–8am window is the busiest, with 112 flights scheduled in it.

Across the year

Spirit on EWR to LAS through the year

Jul–Sep 2025140 flights73.0%
Oct–Dec 202546 flights81.8%
Apr–Jun 202617 flights—

Scale runs 65% to 85%. Rows with fewer than 30 flights show a dash.

Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 74.7% on time across 203 flights.

Split by quarter, Spirit on EWR to LAS logged 140 flights in Jul–Sep 2025, 46 flights in Oct–Dec 2025 and 17 flights in Apr–Jun 2026. Fewer than three of those quarters carried the 30 completed flights this site needs before printing a rate, so the 74.7% annual figure is the one to use.

Across the week, Friday is the strongest day at 83.3% on time and Thursday the weakest at 74.2%. 9 points is a smaller lever than departure hour, but it is free.

Delay causes

Why Spirit runs late on this route

One category carries most of the weight here. National Airspace System accounts for 51% of the 5,491 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

National Airspace System
51%
Carrier
35%
Late-arriving aircraft
14%

51% 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 2,807 minutes out of 5,491, against a national NAS share of 21%. The split is drawn from 5,491 reported delay minutes.

The largest share of delay minutes, 35%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 1,898 of the 5,491 delay minutes reported here.

Cancellations sit at 2.46% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and stage length

What a delay here costs

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 12.1% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.

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 77.6% on time across 201 flights, within 3 points of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.

One caution: this is a thin sample. 203 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.

What to do with this

Booking Spirit on EWR to LAS

Put together: treat all of this as provisional. 203 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 74.7% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 198 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