Carrier route record

NKATL→LAS

Spirit Airlines · Atlanta to Las Vegas

Flights: 186
Period: July 2025 to June 2026
Share of route: 4%
Carriers: 4

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

Spirit on ATL to LAS lands a B+, 5 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 186 flights. The strongest carrier on the route with a full sample, Delta Air Lines, flew 3,329 at 77.3% on time.

Set against the rest of the country, Spirit's ATL to LAS record is 5 points better than the US average of 77.6%. That gap is worth roughly 46 fewer late arrivals for every thousand flights.

On time

82.2%

Arrivals under 15 minutes late, of 185 completed flights

Avg delay

68 min

Across delayed arrivals only, not all flights

Cancelled

0.54%

National rate is 1.81%

Whole route

75.9%

Every carrier on ATL to LAS, 4,796 flights

These figures cover 186 flights between July 2025 and June 2026. The median arrival is 15 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.

Carrier by carrier

Spirit against every carrier on ATL to LAS

Spirit flew 186 of the 4,796 flights on ATL to LAS, about 4% of it. Its 82.2% on time is 6 points better than the route as a whole, which runs 75.9%. Ranked by on-time rate it is first of four carriers on the route, where the range runs from Spirit at 82.2% to Frontier at 63.3%.

The choice of carrier is not cosmetic here. Delta Air Lines arrives on time 77.3% of the time; Frontier Airlines manages 63.3%. Sample sizes sit next to every figure, because a two-point gap across 562 flights means less than a ten-point one.

On-time performance by carrier on ATL to LAS
Airline	Flights	On time	Avg delay	Cancelled	Grade
Spirit Airlines (this page)thin sample	186	82.2%	68 min	0.54%	B+
Delta Air Lines	3,329	77.3%	55 min	0.60%	B+
Southwest Airlines	719	77.2%	48 min	0.42%	B+
Frontier Airlines	562	63.3%	88 min	2.31%	D

The spread between Delta and Frontier is 14 points, wide enough that it should decide the booking. On a hundred trips that is 14 more arrivals inside the on-time window.

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 14 points, against 14 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am20 flights—
8am–11am104 flights84.6%
11am–2pm—
2pm–5pm7 flights—
5pm–8pm38 flights70.3%
8pm–5am17 flights—

Scale runs 60% to 90%. Rows with fewer than 30 flights show a dash.

Book the morning departure. Flights leaving between 8am–11am arrive on time 84.6% of the time, against 70.3% for the evening window. That is 14 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 104 flights scheduled in it.

Across the year

Spirit on ATL to LAS through the year

Jul–Sep 202597 flights89.7%
Oct–Dec 202572 flights81.7%
Jan–Mar 20265 flights—
Apr–Jun 202612 flights—

Scale runs 75% to 95%. 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 82.2% on time across 186 flights.

Split by quarter, Spirit on ATL to LAS logged 97 flights in Jul–Sep 2025, 72 flights in Oct–Dec 2025, 5 flights in Jan–Mar 2026 and 12 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 82.2% annual figure is the one to use.

Delay causes

Why Spirit runs late on this route

One category carries most of the weight here. Carrier accounts for 47% of the 2,242 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.

Carrier
47%
National Airspace System
31%
Late-arriving aircraft
22%

The largest share of delay minutes, 47%, 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 1,057 of the 2,242 delay minutes reported here. The split is drawn from 2,242 reported delay minutes.

Cancellations are rare at 0.54%, below the national 1.81% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.

Connections and stage length

What a delay here costs

5.4% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.

At 1,747 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 82.3% on time across 183 flights, within half a point 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. 186 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 ATL to LAS

Put together: treat all of this as provisional. 186 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 82.2% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 185 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