Carrier route record
G4LAS→FAT
Allegiant Air · Las Vegas to Fresno
- 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 LAS to FAT lands a B+, 6 points better than the national rate of 77.6%. 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 is a workable record, not a spotless one. That rests on 643 flights, with a median arrival 11 minutes early.
Set against the rest of the country, Allegiant's LAS to FAT record is 6 points better than the US average of 77.6%. That gap is worth roughly 63 fewer late arrivals for every thousand flights.
Key figures
On time
83.9%
Arrivals under 15 minutes late, of 639 completed flights
Avg delay
80 min
Across delayed arrivals only, not all flights
Cancelled
0.62%
National rate is 1.81%
Whole route
78.2%
Every carrier on LAS to FAT, 1,736 flights
These figures cover 643 flights between July 2025 and June 2026. The median arrival is 11 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
Allegiant against every carrier on LAS to FAT
Allegiant flew 643 of the 1,736 flights on LAS to FAT, about 37% of it. Its 83.9% on time is 6 points better than the route as a whole, which runs 78.2%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from Allegiant at 83.9% to Southwest at 74.9%.
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) | 643 | 83.9% | 80 min | 0.62% | B+ |
| Southwest Airlines | 1,093 | 74.9% | 51 min | 0.64% | C+ |
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–8am88 flights94.3%
- 8am–11am108 flights85.0%
- 11am–2pm200 flights81.5%
- 2pm–5pm174 flights83.0%
- 5pm–8pm31 flights80.6%
- 8pm–5am42 flights76.2%
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 94.3% of the time, against 76.2% for the overnight 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 11am–2pm window is the busiest, with 200 flights scheduled in it.
Across the year
Allegiant on LAS to FAT through the year
January is the weak month at 73.9% on time, against 91.5% in September. 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. November was the busiest month here, with 63 flights.
Across the week, Wednesday is the strongest day at 91.2% on time and Tuesday the weakest at 73.7%. 18 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. Extreme weather accounts for 42% of the 8,192 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.
- 42%Extreme weather
- 25%Carrier
- 19%Late-arriving aircraft
- 13%National Airspace System
- 0%Security
Extreme weather accounts for 42% 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 6.8 times the usual weather exposure. The split is drawn from 8,192 reported delay minutes.
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
5.3% 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 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 77.3% on time across 643 flights, 7 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 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 LAS to FAT
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 83.9% 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
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.