Route reliability record
LAS→BNA
Las Vegas to Nashville
- Flights
- 2,060
- Period
- September 2025 to August 2026
- Distance
- 1,587 mi
- Carriers
- 6
This route lands a B+, level with the national rate of 77.3%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by roughly 50 minutes on average. That rests on 2,060 LAS to BNA flights, with a median arrival 2 minutes early.
Best time to fly LAS to BNA: a 5am–8am departure, ideally on a Saturday. Flights in that window arrived on time 95.0% of the time and Saturday flights 84.2%, against 77.3% 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
77.3%
Arrivals under 15 minutes late, of 2,038 completed flights
Avg delay
48 min
Across delayed arrivals only, not all flights
Cancelled
0.83%
National rate is 1.89%
Best carrier
Southwest
76.6% on time across 1,811 flights
These figures cover 2,060 flights between September 2025 and August 2026. The median arrival is 2 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.
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Carrier by carrier
Which airline is most reliable on LAS to BNA
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 |
|---|---|---|---|---|---|
| American Airlinesthin sample | 2 | 100.0% | — | 0.00% | A+ |
| Spirit Airlinesthin sample | 195 | 84.1% | 86 min | 3.08% | B− |
| Frontier Airlinesthin sample | 48 | 78.7% | 76 min | 0.00% | B+ |
| Southwest Airlines | 1,811 | 76.6% | 44 min | 0.61% | B+ |
| Allegiant Airthin sample | 2 | 50.0% | 60 min | 0.00% | F+ |
| Delta Air Linesthin sample | 2 | 50.0% | 95 min | 0.00% | F+ |
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.
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 42 points, against half a point between the best and worst carrier.
- 5am–8am404 flights95.0%
- 8am–11am408 flights84.9%
- 11am–2pm318 flights63.0%
- 2pm–5pm217 flights52.8%
- 5pm–8pm241 flights65.3%
- 8pm–5am472 flights82.5%
Scale runs 45% to 100%.
Book the early departure. Flights leaving between 5am–8am arrive on time 95.0% of the time, against 52.8% for the afternoon window. That is 42 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 8pm–5am window is the busiest, with 472 flights scheduled in it.
Explore
Filter LAS to BNA 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 LAS to BNA, the best departure window is 5am–8am at 95.0% on time and the worst is 2pm–5pm at 52.8%, a wide gap of 42.2 points. All US flights leaving 5am–8am ran 89.3%.
- 5–8am95.0%
- 8–11am84.9%
- 11am–2pm63.0%
- 2–5pm52.8%
- 5–8pm65.3%
- 8pm–5am82.5%
best all US flightsScale 45% to 100%.
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.
June is the worst month at 65.9% on time, 22 points below December, the best at 88.1%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. October was the busiest month here, with 222 flights.
Across the week, Saturday is the strongest day at 84.2% on time and Friday the weakest at 68.8%, a spread of 15 points.
Delay causes
Why this route gets delayed
Carrier accounts for 42% of the 22,000 delay minutes carriers reported here, and the remaining four split what is left.
- 42%Carrier
- 37%Late-arriving aircraft
- 19%National Airspace System
- 3%Extreme weather
- 0%Security
37% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 22,000 reported delay minutes here, that single category outweighs weather by 14 to one. The split is drawn from 21,774 reported delay minutes.
The largest share of delay minutes, 42%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 9,145 of the 22,000 delay minutes reported here.
Cancellations are rare at 0.83%, below the national 1.89% 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 actually costs
5.0% 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 roughly 50 minutes, which a normal layover absorbs.
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 75.9% on time across 2,035 flights, within about a point 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 2,060 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 BNA 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. December runs 88.1% on time and June 65.9%, a swing of 22 points. If the dates move at all, move them out of June before you think about anything else. 2,038 completed flights over 12 months sit behind that.
Common questions
LAS to BNA questions
How often is LAS to BNA delayed?
Roughly one flight in four arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 22.7% of the 2,060 flights in this analysis, against 22.7% nationally. Delayed flights are late by roughly 50 minutes on average.
How reliable is LAS to BNA compared with the rest of the country?
77.3% of flights arrive on time here against a national 77.3%, a difference of half a point in its favour. That is worth a B+ on this site's grading scale.
What time of day has the fewest delays on LAS to BNA?
The 5am–8am departure window is the strongest at 95.0% on time. The 2pm–5pm window is the weakest at 52.8%, 42 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 June delays on LAS to BNA?
June is the weakest month at 65.9% on time, compared with 88.1% in December. 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
- BNA to LAS — the return legseparate record
- Harry Reid International (LAS) delay statistics
- Nashville International (BNA) delay statistics
- Spirit Airlines on LAS to BNA84.1%
- Southwest Airlines on LAS to BNA76.6%
- LAS to LAX, a related route77.9%
- ORD to BNA, a related route69.2%
- LAS to DEN, a related route76.5%
- American Airlines on-time record100.0%
- Spirit Airlines on-time record84.1%
- Frontier Airlines on-time record78.7%
- 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. LAS to BNA and BNA to LAS 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.