Carrier route record
G4LAS→FAT
Allegiant Air · Las Vegas to Fresno
- 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 LAS to FAT lands a B+, 5 points better than the national rate of 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That rests on 641 flights, with a median arrival 9 minutes early.
Set against the rest of the country, Allegiant's LAS to FAT record is 5 points better than the US average of 77.3%. That gap is worth roughly 48 fewer late arrivals for every thousand flights.
Key figures
On time
82.1%
Arrivals under 15 minutes late, of 637 completed flights
Avg delay
79 min
Across delayed arrivals only, not all flights
Cancelled
0.62%
National rate is 1.89%
Whole route
77.0%
Every carrier on LAS to FAT, 1,713 flights
These figures cover 641 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
Allegiant against every carrier on LAS to FAT
Allegiant flew 641 of the 1,713 flights on LAS to FAT, about 37% of it. Its 82.1% on time is 5 points better than the route as a whole, which runs 77.0%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from Allegiant at 82.1% to Southwest at 74.0%.
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 |
|---|---|---|---|---|---|
| Allegiant Air (this page) | 641 | 82.1% | 79 min | 0.62% | B+ |
| Southwest Airlines | 1,072 | 74.0% | 51 min | 0.65% | C+ |
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 19 points, against half a point between the best and worst carrier.
- 5am–8am65 flights95.4%
- 8am–11am108 flights83.2%
- 11am–2pm235 flights80.9%
- 2pm–5pm170 flights80.2%
- 5pm–8pm25 flights—
- 8pm–5am38 flights76.3%
Scale runs 70% to 100%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 95.4% of the time, against 76.3% for the overnight window. That is 19 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 235 flights scheduled in it.
Across the year
Allegiant on LAS to FAT through the year
August is the worst month at 73.2% on time, 18 points below September, the best at 91.5%. 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. November was the busiest month here, with 63 flights.
Across the week, Saturday is the strongest day at 90.0% on time and Thursday the weakest at 75.2%, a spread of 15 points.
Arrival by arrival
How late Allegiant on LAS to FAT runs when it is late
Allegiant on LAS to FAT often beats the schedule: 212 of 637 completed flights, 33%, arrived 15 minutes or more early. The 114 late arrivals split 36 under half an hour, 38 between 30 and 60 minutes, and 40 an hour or more.
- 15+ min early212 flights33.3%
- Within 15 min311 flights48.8%
- 15–29 min late36 flights5.7%
- 30–59 min late38 flights6.0%
- 1–2 hours late23 flights3.6%
- 2+ hours late17 flights2.7%
Scale runs 0% to 100%.
Share of 637 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 95 departures that left 15 minutes late or more, only 9 made it up before arrival. 28 flights left on time and still arrived late.
The worst days
Worst days for Allegiant on LAS to FAT
The latest arrival of the period was on 19 February 2026, 17 hours behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). On three of the five worst days the largest share was filed as extreme weather.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 19 February 2026 | 17 hours | Carrier |
| 16 January 2026 | 16 hours 18 minutes | Extreme weather |
| 30 December 2025 | 4 hours 29 minutes | Late-arriving aircraft |
| 17 January 2026 | 3 hours 51 minutes | Extreme weather |
| 24 November 2025 | 3 hours 34 minutes | Extreme weather |
Delay causes
Why Allegiant runs late on this route
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 9,009 reported delay minutes.
- 36%Extreme weather
- 26%Carrier
- 22%Late-arriving aircraft
- 15%National Airspace System
- 0%Security
Extreme weather accounts for 36% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 6.0 times the usual weather exposure. The split is drawn from 9,009 reported delay minutes.
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
6.3% 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 a little over an hour, which a normal layover absorbs.
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 5am–8am window matters as much as it does.
The return leg is a different operation and performs like one: it runs 75.7% on time across 641 flights, 6 points below 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 LAS to FAT
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 82.1% 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
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.