Carrier route record
G4FAT→LAS
Allegiant Air · Fresno to Las Vegas
- Flights
- 643
- Period
- July 2025 to June 2026
- Share of route
- 37%
- Carriers
- 2
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Allegiant Air.
Allegiant on FAT to LAS 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 an hour and a half on average. That is a workable record, not a spotless one. That rests on 643 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 Allegiant on FAT to LAS 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 639 completed flights
Avg delay
92 min
Across delayed arrivals only, not all flights
Cancelled
0.62%
National rate is 1.81%
Whole route
82.2%
Every carrier on FAT to LAS, 1,736 flights
These figures cover 643 flights between July 2025 and June 2026. Beyond the headline rate, 9.5% 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
Allegiant against every carrier on FAT to LAS
Allegiant flew 643 of the 1,736 flights on FAT to LAS, about 37% of it. Its 77.3% on time is 5 points worse than the route as a whole, which runs 82.2%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from Southwest at 85.1% to Allegiant at 77.3%.
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 |
|---|---|---|---|---|---|
| Southwest Airlines | 1,093 | 85.1% | 64 min | 0.27% | A+ |
| Allegiant Air (this page) | 643 | 77.3% | 92 min | 0.62% | B+ |
Departure window
When Allegiant runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 18 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–11am133 flights87.1%
- 11am–2pm92 flights82.6%
- 2pm–5pm219 flights69.4%
- 5pm–8pm120 flights79.5%
- 8pm–5am79 flights73.4%
Scale runs 60% to 95%. Rows with fewer than 30 flights show a dash.
Book the morning departure. Flights leaving between 8am–11am arrive on time 87.1% of the time, against 69.4% for the afternoon window. That is 18 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 2pm–5pm window is the busiest, with 219 flights scheduled in it.
Across the year
Allegiant on FAT to LAS through the year
June is the worst month at 63.0% on time, 28 points below March, the best at 91.3%. 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. November was the busiest month here, with 63 flights.
Across the week, Wednesday is the strongest day at 89.5% on time and Tuesday the weakest at 68.4%. 21 points is a smaller lever than departure hour, but it is free.
Delay causes
Why Allegiant runs late on this route
One category carries most of the weight here. Late-arriving aircraft accounts for 50% of the 13,000 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.
- 50%Late-arriving aircraft
- 26%National Airspace System
- 16%Carrier
- 9%Extreme weather
50% 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 13,000 reported delay minutes here, that single category outweighs weather by 6 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 13,395 reported delay minutes.
The practical consequence: the 8am–11am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 87.1% on time here.
Cancellations are rare at 0.62%, 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 costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 9.5% 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 259 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 8am–11am window matters as much as it does.
The return leg is a different operation and performs like one: it runs 83.9% on time across 643 flights, 7 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 7 points of difference.
One caution: this is a thin sample. 643 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 Allegiant on FAT to LAS
Put together: treat all of this as provisional. 643 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 77.3% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 639 completed flights over 12 months sit behind that.
Related
Where to go next
- FAT to LAS, every carrier
- Allegiant on LAS to FAT, the return leg
- Southwest Airlines on FAT to LAS85.1%
- Allegiant Air network-wide record
- Harry Reid International (LAS) delay statistics
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.04 million flight records
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.