Carrier route record
G4FAT→LAS
Allegiant Air · Fresno to Las Vegas
- Flights
- 641
- Period
- September 2025 to August 2026
- Share of route
- 37%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with Allegiant Air.
Allegiant on FAT to LAS sits in the middle of the pack with a B+. Close to three flights in four arrive on time by the DOT's definition, 2 points worse than the national rate of 77.3%. The late ones land an hour and a half behind schedule. That rests on 641 flights, with a median arrival 8 minutes early.
The US average over the same twelve months is 77.3%, 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
75.7%
Arrivals under 15 minutes late, of 637 completed flights
Avg delay
94 min
Across delayed arrivals only, not all flights
Cancelled
0.62%
National rate is 1.89%
Whole route
81.6%
Every carrier on FAT to LAS, 1,713 flights
These figures cover 641 flights between September 2025 and August 2026. Beyond the headline rate, 11.6% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
Allegiant against every carrier on FAT to LAS
Allegiant flew 641 of the 1,713 flights on FAT to LAS, about 37% of it. Its 75.7% on time is 6 points worse than the route as a whole, which runs 81.6%. 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 75.7%.
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 | 1,072 | 85.1% | 59 min | 0.28% | A+ |
| Allegiant Air (this page) | 641 | 75.7% | 94 min | 0.62% | B+ |
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
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 15 points, against half a point between the best and worst carrier.
- 5am–8am—
- 8am–11am112 flights84.7%
- 11am–2pm97 flights81.4%
- 2pm–5pm245 flights69.8%
- 5pm–8pm126 flights74.8%
- 8pm–5am61 flights75.4%
Scale runs 60% to 90%. Rows with fewer than 30 flights show a dash.
Book the morning departure. Flights leaving between 8am–11am arrive on time 84.7% of the time, against 69.8% for the afternoon window. That is 15 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 245 flights scheduled in it.
Across the year
Allegiant on FAT to LAS through the year
August is the worst month at 60.7% on time, 31 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 88.9% on time and Friday the weakest at 64.7%, a spread of 24 points.
Arrival by arrival
How late Allegiant on FAT to LAS runs when it is late
Allegiant on FAT to LAS often beats the schedule: 182 of 637 completed flights, 29%, arrived 15 minutes or more early. The 155 late arrivals split 39 under half an hour, 42 between 30 and 60 minutes, and 74 an hour or more.
- 15+ min early182 flights28.6%
- Within 15 min300 flights47.1%
- 15–29 min late39 flights6.1%
- 30–59 min late42 flights6.6%
- 1–2 hours late40 flights6.3%
- 2+ hours late34 flights5.3%
Scale runs 0% to 100%.
Share of 637 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 142 departures that left 15 minutes late or more, only 7 made it up before arrival. 20 flights left on time and still arrived late.
The worst days
Worst days for Allegiant on FAT to LAS
The latest arrival of the period was on 26 September 2025, 16 hours 51 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The five worst days are spread across September, February, January and April, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 26 September 2025 | 16 hours 51 minutes | National Airspace System |
| 19 February 2026 | 16 hours 33 minutes | Late-arriving aircraft |
| 16 January 2026 | 16 hours 3 minutes | Late-arriving aircraft |
| 23 April 2026 | 5 hours 55 minutes | Carrier |
| 18 January 2026 | 5 hours 40 minutes | Carrier |
Delay causes
Why Allegiant runs late on this route
Late-arriving aircraft accounts for 52% of the 15,000 delay minutes carriers reported here, and the remaining four split what is left.
- 52%Late-arriving aircraft
- 27%National Airspace System
- 14%Carrier
- 8%Extreme weather
52% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 15,000 reported delay minutes here, that single category outweighs weather by 7 to one. The split is drawn from 14,514 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 84.7% on time here.
Cancellations are rare at 0.62%, 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 costs
11.6% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection 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 82.1% on time across 641 flights, 6 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 6 points of difference.
One caution: this is a thin sample. 641 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. 641 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 75.7% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 637 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 7.05 million flight records
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.