Carrier route record

NKBNA→LAS

Spirit Airlines · Nashville to Las Vegas

Flights: 243
Period: July 2025 to June 2026
Share of route: 12%
Carriers: 6

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

Spirit on BNA to LAS lands a B, 2 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That is a workable record, not a spotless one. That rests on 243 flights, with a median arrival 9 minutes early.

The US average over the same twelve months is 77.6%, so there is little to separate Spirit on BNA to LAS from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.

On time

79.8%

Arrivals under 15 minutes late, of 238 completed flights

Avg delay

87 min

Across delayed arrivals only, not all flights

Cancelled

2.06%

National rate is 1.81%

Whole route

76.9%

Every carrier on BNA to LAS, 2,021 flights

These figures cover 243 flights between July 2025 and June 2026. Beyond the headline rate, 9.2% 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 BNA to LAS

Spirit flew 243 of the 2,021 flights on BNA to LAS, about 12% of it. Its 79.8% on time is 3 points better than the route as a whole, which runs 76.9%. Ranked by on-time rate it is number three of six carriers on the route, where the range runs from Allegiant at 100.0% to Frontier at 41.7%. Four 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 BNA to LAS
Airline	Flights	On time	Avg delay	Cancelled	Grade
Allegiant Airthin sample	2	100.0%	—	0.00%	A+
American Airlinesthin sample	2	100.0%	—	0.00%	A+
Spirit Airlines (this page)thin sample	243	79.8%	87 min	2.06%	B
Southwest Airlines	1,760	76.7%	47 min	0.68%	B+
Delta Air Linesthin sample	2	50.0%	121 min	0.00%	F+
Frontier Airlinesthin sample	12	41.7%	63 min	0.00%	F+

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 20 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–8am—
8am–11am4 flights—
11am–2pm—
2pm–5pm66 flights93.9%
5pm–8pm17 flights—
8pm–5am156 flights74.2%

Scale runs 65% to 100%. Rows with fewer than 30 flights show a dash.

The best window here is not the first bank but the 2pm–5pm slot at 93.9% on time, ahead of 8pm–5am at 74.2%. Where the curve peaks mid-day rather than at dawn, the constraint is usually congestion at one end rather than the aircraft's own rotation. The 8pm–5am window is the busiest, with 156 flights scheduled in it.

Across the year

Spirit on BNA to LAS through the year

Jul–Sep 202574 flights79.5%
Oct–Dec 202578 flights83.3%
Jan–Mar 202677 flights79.5%
Apr–Jun 202614 flights—

Scale runs 70% to 90%. 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 79.8% on time across 243 flights.

Quarter by quarter Spirit on BNA to LAS held fairly steady: 79.5% in Jul–Sep 2025, 83.3% in Oct–Dec 2025 and 79.5% in Jan–Mar 2026. A spread of 4 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Across the week, Thursday is the strongest day at 84.6% on time and Monday the weakest at 75.0%. 10 points is a smaller lever than departure hour, but it is free.

Delay causes

Why Spirit runs late on this route

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 4,167 reported delay minutes.

Carrier
40%
Late-arriving aircraft
37%
National Airspace System
21%
Extreme weather
2%

37% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 4,167 reported delay minutes here, that single category outweighs weather by 18 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 4,167 reported delay minutes.

The largest share of delay minutes, 40%, 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 1,675 of the 4,167 delay minutes reported here.

Cancellations sit at 2.06% 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. 9.2% 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 1,587 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 82.1% on time across 241 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.

One caution: this is a thin sample. 243 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 BNA to LAS

Put together: treat all of this as provisional. 243 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 79.8% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 238 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