Route reliability record
FLL→LAS
Fort Lauderdale to Las Vegas
- Flights
- 1,046
- Period
- July 2025 to June 2026
- Distance
- 2,173 mi
- Carriers
- 4
This route lands a B, level with the national rate of 77.6%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by roughly 55 minutes on average. That is a workable record, not a spotless one. That rests on 1,046 FLL to LAS flights, with a median arrival 7 minutes early.
Best time to fly FLL to LAS: a 5am–8am departure, ideally on a Wednesday. Flights in that window arrived on time 87.3% of the time and Wednesday flights 85.9%, against 77.4% 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
77.4%
Arrivals under 15 minutes late, of 1,028 completed flights
Avg delay
54 min
Across delayed arrivals only, not all flights
Cancelled
1.63%
National rate is 1.81%
Best carrier
JetBlue
79.5% on time across 781 flights
These figures cover 1,046 flights between July 2025 and June 2026. The median arrival is 7 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 FLL to LAS
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 |
|---|---|---|---|---|---|
| Delta Air Linesthin sample | 3 | 100.0% | — | 0.00% | A+ |
| JetBlue Airways | 781 | 79.5% | 52 min | 1.41% | B |
| Southwest Airlinesthin sample | 14 | 71.4% | 39 min | 0.00% | C+ |
| Spirit Airlinesthin sample | 248 | 71.1% | 57 min | 2.42% | C |
Flight by flight
Flights on FLL to LAS
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 Fort Lauderdale to Las Vegas
Every airline on this route and on the routes between nearby airports, ranked by how often a scheduled flight actually operated and arrived on time. 1 of the top 2 use a different airport at one end.
| Option | Airline | Success | On time | Cancelled | Best departure | Most punctual flight |
|---|---|---|---|---|---|---|
| 1. FLL → LASFort Lauderdale to Las Vegas | JetBlue Airways | 78.4% | 79.5% | 1.41% | 5am–8am, Wed | B6 1707 07:00 |
| 2. MIA → LASMiami to Las Vegas | American Airlines | 72.6% | 73.2% | 0.86% | 5am–8am, Wed (route) | — |
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 17 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–8am208 flights87.3%
- 8am–11am121 flights86.0%
- 11am–2pm6 flights—
- 2pm–5pm129 flights84.7%
- 5pm–8pm276 flights70.4%
- 8pm–5am306 flights70.6%
Scale runs 60% to 95%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 87.3% of the time, against 70.4% for the evening window. That is 17 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 306 flights scheduled in it.
Across the year
When delays peak on this route
This route's year swings by 27 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.
December is the weak month at 67.0% on time, against 93.7% in November. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. March was the busiest month here, with 127 flights.
Across the week, Wednesday is the strongest day at 85.9% on time and Sunday the weakest at 68.9%. 17 points is a smaller lever than departure hour, but it is free.
Delay causes
Why this route gets delayed
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 12,000 reported delay minutes.
- 36%Late-arriving aircraft
- 34%Carrier
- 29%National Airspace System
- 2%Extreme weather
- 0%Security
36% 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 21 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 12,413 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 87.3% on time here.
Cancellations sit at 1.63% against a national 1.81%, which is ordinary. Diversions add another 0.10%.
Connections and stage length
What a delay here actually costs
7.5% 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 roughly 55 minutes, which a normal layover absorbs.
At 2,173 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 74.8% on time across 1,048 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.
One caution: this is a thin sample. 1,046 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 LAS after this flight
What to do with this
Booking this route
Put together: treat all of this as provisional. 1,046 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 77.4% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 1,028 completed flights over 12 months sit behind that.
Common questions
FLL to LAS questions
How often is FLL to LAS 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 22.6% of the 1,046 flights in this analysis, against 22.4% nationally. Delayed flights are late by roughly 55 minutes on average.
How reliable is FLL to LAS compared with the rest of the country?
77.4% of flights arrive on time here against a national 77.6%, a difference of half a point against it. That is worth a B on this site's grading scale.
What time of day has the fewest delays on FLL to LAS?
The 5am–8am departure window is the strongest at 87.3% on time. The 5pm–8pm window is the weakest at 70.4%, 17 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 December delays on FLL to LAS?
December is the weakest month at 67.0% on time, compared with 93.7% in November. Across the year that is 27 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 FLL — the return legseparate record
- Fort Lauderdale-Hollywood International (FLL) delay statistics
- Harry Reid International (LAS) delay statistics
- JetBlue Airways on FLL to LAS79.5%
- Spirit Airlines on FLL to LAS71.1%
- FLL to ATL, a related route71.8%
- LAX to LAS, a related route76.5%
- FLL to EWR, a related route70.4%
- Delta Air Lines on-time record100.0%
- JetBlue Airways on-time record79.5%
- Southwest Airlines on-time record71.4%
- 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. FLL to LAS and LAS to FLL 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.