Carrier route record
F9PHX→LAS
Frontier Airlines · Phoenix to Las Vegas
- Flights
- 861
- Period
- July 2025 to June 2026
- Share of route
- 14%
- Carriers
- 6
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Frontier Airlines.
Frontier on PHX to LAS lands a B, 5 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 close to two hours on average. That is a workable record, not a spotless one. That rests on 861 flights. The strongest carrier on the route with a full sample, American Airlines, flew 1,687 at 79.1% on time.
Set against the rest of the country, Frontier's PHX to LAS record is 5 points better than the US average of 77.6%. That gap is worth roughly 51 fewer late arrivals for every thousand flights.
Key figures
On time
82.7%
Arrivals under 15 minutes late, of 852 completed flights
Avg delay
108 min
Across delayed arrivals only, not all flights
Cancelled
1.05%
National rate is 1.81%
Whole route
78.7%
Every carrier on PHX to LAS, 6,021 flights
These figures cover 861 flights between July 2025 and June 2026. Beyond the headline rate, 8.5% 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
Frontier against every carrier on PHX to LAS
Frontier flew 861 of the 6,021 flights on PHX to LAS, about 14% of it. Its 82.7% on time is 4 points better than the route as a whole, which runs 78.7%. Ranked by on-time rate it is number four of six carriers on the route, where the range runs from Spirit at 100.0% to Southwest at 77.3%. Three of those carriers flew fewer than 365 flights here, so treat their positions as rough.
The two carriers here are closely matched: 2 points separate the best from the worst. At that spread, schedule and price are better tie-breakers than reliability. Sample sizes are shown so you can see which rows are worth weighing.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Spirit Airlinesthin sample | 4 | 100.0% | — | 0.00% | A+ |
| Envoy Airthin sample | 6 | 100.0% | — | 0.00% | A+ |
| SkyWest Airlinesthin sample | 16 | 93.8% | 90 min | 0.00% | A+ |
| Frontier Airlines (this page) | 861 | 82.7% | 108 min | 1.05% | B |
| American Airlines | 1,687 | 79.1% | 67 min | 0.83% | B+ |
| Southwest Airlines | 3,447 | 77.3% | 51 min | 1.02% | B |
No carrier stands out. American tops the table at 79.1%, 2 points clear of the bottom, which is inside the range this kind of sample moves year to year.
Flight by flight
Frontier flight numbers on PHX to LAS
Departure window
When Frontier runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 22 points, against 2 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am179 flights93.3%
- 8am–11am176 flights87.4%
- 11am–2pm112 flights90.0%
- 2pm–5pm90 flights81.1%
- 5pm–8pm100 flights71.4%
- 8pm–5am204 flights71.8%
Scale runs 65% to 100%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 93.3% of the time, against 71.4% for the evening window. That is 22 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 204 flights scheduled in it.
Across the year
Frontier on PHX to LAS through the year
June is the worst month at 74.1% on time, 17 points below February, the best at 90.8%. 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. April was the busiest month here, with 83 flights.
Across the week, Saturday is the strongest day at 90.4% on time and Thursday the weakest at 75.4%. 15 points is a smaller lever than departure hour, but it is free.
Delay causes
Why Frontier runs late on this route
One category carries most of the weight here. Late-arriving aircraft accounts for 55% of the 16,000 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.
- 55%Late-arriving aircraft
- 27%Carrier
- 15%National Airspace System
- 2%Extreme weather
55% 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 16,000 reported delay minutes here, that single category outweighs weather by 26 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 15,822 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 93.3% on time here.
Cancellations sit at 1.05% against a national 1.81%, which is ordinary. Diversions add another 0.00%.
Connections and stage length
What a delay here costs
8.5% 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 close to two hours, which a normal layover absorbs.
At 255 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 79.5% on time across 865 flights, 3 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 3 points of difference.
One caution: this is a thin sample. 861 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 Frontier on PHX to LAS
Put together: treat all of this as provisional. 861 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 82.7% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 852 completed flights over 12 months sit behind that.
Related
Where to go next
- PHX to LAS, every carrier
- Frontier on LAS to PHX, the return leg
- American Airlines on PHX to LAS79.1%
- Southwest Airlines on PHX to LAS77.3%
- Frontier Airlines network-wide record
- Phoenix Sky Harbor International (PHX) delay statistics
- 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.