Route reliability record
RNO→LAS
Reno to Las Vegas
- Flights
- 4,136
- Period
- September 2025 to August 2026
- Distance
- 345 mi
- Carriers
- 3
This route lands a B+, 4 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 about an hour on average. That rests on 4,136 RNO to LAS flights, of which Spirit Airlines flew 419 at 86.6% on time.
Best time to fly RNO to LAS: a 5am–8am departure, ideally on a Saturday. Flights in that window arrived on time 96.1% of the time and Saturday flights 88.6%, against 81.4% for the route overall.
Set against the rest of the country, this route's record is 4 points better than the US average of 77.3%. That gap is worth roughly 41 fewer late arrivals for every thousand flights.
Key figures
On time
81.4%
Arrivals under 15 minutes late, of 4,095 completed flights
Avg delay
63 min
Across delayed arrivals only, not all flights
Cancelled
0.89%
National rate is 1.89%
Best carrier
Spirit
86.6% on time across 419 flights
These figures cover 4,136 flights between September 2025 and August 2026. The median arrival is 9 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 RNO to LAS
The two carriers here are closely matched: 4 points separate the best from the worst. At that spread, schedule and price are better tie-breakers than reliability. Sample sizes are shown so you can see which rows are worth weighing.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Spirit Airlines | 419 | 86.6% | 83 min | 1.91% | A |
| Southwest Airlines | 3,374 | 82.2% | 56 min | 0.65% | B+ |
| Frontier Airlinesthin sample | 343 | 66.3% | 91 min | 2.04% | C |
No carrier stands out. Spirit tops the table at 86.6%, 4 points clear of the bottom, which is inside the range this kind of sample moves year to year.
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Best ways to make this trip
The most reliable ways to fly Reno to Las Vegas
Every airline on this route, ranked by how often a scheduled flight actually operated and arrived on time, with its best departure time and most punctual flight number. No nearby airport pair beat these.
| Option | Airline | Success | On time | Cancelled | Best departure | Most punctual flight |
|---|---|---|---|---|---|---|
| 1. RNO → LASReno to Las Vegas | Spirit Airlines | 84.9% | 86.6% | 1.91% | 5am–8am, Wed | — |
| 2. RNO → LASReno to Las Vegas | Southwest Airlines | 81.7% | 82.2% | 0.65% | 5am–8am, Sat | — |
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 28 points, against 4 points between the best and worst carrier.
- 5am–8am780 flights96.1%
- 8am–11am688 flights90.5%
- 11am–2pm793 flights80.5%
- 2pm–5pm771 flights74.4%
- 5pm–8pm608 flights67.8%
- 8pm–5am496 flights73.9%
Scale runs 60% to 100%.
Book the early departure. Flights leaving between 5am–8am arrive on time 96.1% of the time, against 67.8% for the evening window. That is 28 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 11am–2pm window is the busiest, with 793 flights scheduled in it.
Explore
Filter RNO 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 RNO to LAS, the best departure window is 5am–8am at 96.1% on time and the worst is 5pm–8pm at 67.8%, a wide gap of 28.3 points. All US flights leaving 5am–8am ran 89.3%.
- 5–8am96.1%
- 8–11am90.5%
- 11am–2pm80.5%
- 2–5pm74.4%
- 5–8pm67.8%
- 8pm–5am73.9%
best all US flightsScale 60% to 100%.
Across the year
When delays peak on this route
This route's year swings by 16 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.
August is the worst month at 74.9% on time, 16 points below January, the best at 90.9%. 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. July was the busiest month here, with 411 flights.
Across the week, Saturday is the strongest day at 88.6% on time and Friday the weakest at 76.0%, a spread of 13 points.
Delay causes
Why this route gets delayed
Late-arriving aircraft accounts for 64% of the 48,000 delay minutes carriers reported here, and the remaining four split what is left.
- 64%Late-arriving aircraft
- 22%National Airspace System
- 12%Carrier
- 2%Extreme weather
64% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 48,000 reported delay minutes here, that single category outweighs weather by 39 to one. The split is drawn from 48,375 reported delay minutes.
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 96.1% on time here.
Cancellations are rare at 0.89%, 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
6.5% 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 about an hour, which a normal layover absorbs.
At 345 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 5am–8am window matters as much as it does.
The return leg runs 78.9% on time across 4,136 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.
The sample behind these figures is 4,136 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. January runs 90.9% on time and August 74.9%, a swing of 16 points. If the dates move at all, move them out of August before you think about anything else. 4,095 completed flights over 12 months sit behind that.
Common questions
RNO to LAS questions
How often is RNO 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 18.6% of the 4,136 flights in this analysis, against 22.7% nationally. Delayed flights are late by about an hour on average.
Which airline is most reliable on RNO to LAS?
Spirit Airlines leads at 86.6% on time across 419 flights. Southwest Airlines is at the other end on 82.2%, a gap of 4 points. Sample size matters as much as the percentage: a rate built from a few hundred flights moves around far more than one built from ten thousand.
What time of day has the fewest delays on RNO to LAS?
The 5am–8am departure window is the strongest at 96.1% on time. The 5pm–8pm window is the weakest at 67.8%, 28 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 August delays on RNO to LAS?
August is the weakest month at 74.9% on time, compared with 90.9% in January. Across the year that is 16 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 RNO — the return legseparate record
- Harry Reid International (LAS) delay statistics
- Spirit Airlines on RNO to LAS86.6%
- Southwest Airlines on RNO to LAS82.2%
- Frontier Airlines on RNO to LAS66.3%
- RNO to LAX, a related route87.2%
- LAX to LAS, a related route75.8%
- RNO to DEN, a related route86.6%
- Spirit Airlines on-time record86.6%
- Southwest Airlines on-time record82.2%
- Frontier Airlines on-time record66.3%
- 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. RNO to LAS and LAS to RNO 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.