Route reliability record
LAS→CLE
Las Vegas to Cleveland
- Flights
- 984
- Period
- July 2025 to June 2026
- Distance
- 1,824 mi
- Carriers
- 4
This route lands a B+, about a point worse than the national rate of 77.6%. About one flight in four 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 984 LAS to CLE flights, of which Frontier Airlines flew 612 at 77.3% on time.
Best time to fly LAS to CLE: a 5am–8am departure, ideally on a Wednesday. Flights in that window arrived on time 95.2% of the time and Wednesday flights 89.2%, against 76.8% for the route overall.
The US average over the same twelve months is 77.6%, 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
76.8%
Arrivals under 15 minutes late, of 976 completed flights
Avg delay
55 min
Across delayed arrivals only, not all flights
Cancelled
0.81%
National rate is 1.81%
Best carrier
Frontier
77.3% on time across 612 flights
These figures cover 984 flights between July 2025 and June 2026. The median arrival is 5 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
Which airline is most reliable on LAS to CLE
The two carriers here are closely matched: about a point 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 |
|---|---|---|---|---|---|
| Delta Air Linesthin sample | 1 | 100.0% | — | 0.00% | A+ |
| American Airlinesthin sample | 2 | 100.0% | — | 0.00% | A+ |
| Frontier Airlines | 612 | 77.3% | 67 min | 1.31% | B |
| Southwest Airlines | 369 | 75.9% | 37 min | 0.00% | B+ |
No carrier stands out. Frontier tops the table at 77.3%, about a point clear of the bottom, which is inside the range this kind of sample moves year to year.
Flight by flight
Flights on LAS to CLE
The flight numbers below flew this route at least 250 times in the period, busiest first. Each has its own record, with its schedule and delay causes.
Best ways to make this trip
The most reliable ways to fly Las Vegas to Cleveland
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. LAS → CLELas Vegas to Cleveland | Frontier Airlines | 76.3% | 77.3% | 1.31% | 11am–2pm, Wed | F9 3232 08:16 |
| 2. LAS → CLELas Vegas to Cleveland | Southwest Airlines | 75.9% | 75.9% | 0.00% | 5am–8am, Wed | — |
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 31 points, against about a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am62 flights95.2%
- 8am–11am283 flights79.0%
- 11am–2pm327 flights76.4%
- 2pm–5pm52 flights64.7%
- 5pm–8pm—
- 8pm–5am260 flights73.0%
Scale runs 55% to 100%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 95.2% of the time, against 64.7% for the afternoon window. That is 31 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 327 flights scheduled in it.
Across the year
When delays peak on this route
This route's year swings by 24 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 61.4% on time, 24 points below September, the best at 85.5%. 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. March was the busiest month here, with 93 flights.
Across the week, Wednesday is the strongest day at 89.2% on time and Sunday the weakest at 68.0%. 21 points is a smaller lever than departure hour, but it is free.
Delay causes
Why this route gets delayed
One category carries most of the weight here. Carrier accounts for 47% of the 12,000 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.
- 47%Carrier
- 40%Late-arriving aircraft
- 13%National Airspace System
- 1%Extreme weather
40% 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 12,000 reported delay minutes here, that single category outweighs weather by 35 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 12,443 reported delay minutes.
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 5,817 of the 12,000 delay minutes reported here.
Cancellations are rare at 0.81%, 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 actually costs
5.8% 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 1,824 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 77.9% on time across 981 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.
One caution: this is a thin sample. 984 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.
Work out the risk of missing a connection in CLE after this flight
What to do with this
Booking this route
Put together: treat all of this as provisional. 984 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 76.8% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 976 completed flights over 12 months sit behind that.
Common questions
LAS to CLE questions
How often is LAS to CLE delayed?
About 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 23.2% of the 984 flights in this analysis, against 22.4% nationally. Delayed flights are late by about an hour on average.
Which airline is most reliable on LAS to CLE?
Frontier Airlines leads at 77.3% on time across 612 flights. Southwest Airlines is at the other end on 75.9%, a gap of about a point. 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 LAS to CLE?
The 5am–8am departure window is the strongest at 95.2% on time. The 2pm–5pm window is the weakest at 64.7%, 31 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 CLE?
June is the weakest month at 61.4% on time, compared with 85.5% in September. Across the year that is 24 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
- CLE to LAS — the return legseparate record
- Harry Reid International (LAS) delay statistics
- Cleveland Hopkins International (CLE) delay statistics
- Frontier Airlines on LAS to CLE77.3%
- Southwest Airlines on LAS to CLE75.9%
- LAS to LAX, a related route78.8%
- ORD to CLE, a related route70.1%
- LAS to DEN, a related route77.0%
- Delta Air Lines on-time record100.0%
- American Airlines on-time record100.0%
- Frontier Airlines on-time record77.3%
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.04 million flight records
Direction matters. LAS to CLE and CLE 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.