Carrier route record
F9LAS→LAX
Frontier Airlines · Las Vegas to Los Angeles
- Flights
- 593
- Period
- July 2025 to June 2026
- Share of route
- 7%
- Carriers
- 8
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Frontier Airlines.
Frontier on LAS to LAX lands a B+, 3 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 593 flights. The strongest carrier on the route with a full sample, Spirit Airlines, flew 646 at 87.3% on time.
Spirit Airlines is the most reliable of the five carriers covered here at 87.3% on time across 646 flights.
Key figures
On time
80.6%
Arrivals under 15 minutes late, of 592 completed flights
Avg delay
57 min
Across delayed arrivals only, not all flights
Cancelled
0.17%
National rate is 1.81%
Whole route
78.8%
Every carrier on LAS to LAX, 8,325 flights
These figures cover 593 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
Frontier against every carrier on LAS to LAX
Frontier flew 593 of the 8,325 flights on LAS to LAX, about 7% of it. Its 80.6% on time is 2 points better than the route as a whole, which runs 78.8%. Ranked by on-time rate it is number five of eight carriers on the route, where the range runs from Spirit at 87.3% to Southwest at 68.2%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.
The choice of carrier is not cosmetic here. Spirit Airlines arrives on time 87.3% of the time; Southwest Airlines manages 68.2%. Sample sizes sit next to every figure, because a two-point gap across 2,386 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Spirit Airlines | 646 | 87.3% | 62 min | 0.93% | A+ |
| United Airlines | 1,574 | 86.2% | 55 min | 0.70% | A+ |
| SkyWest Airlinesthin sample | 312 | 84.0% | 66 min | 1.60% | B |
| Delta Air Lines | 1,737 | 84.0% | 72 min | 0.92% | B+ |
| Frontier Airlines (this page) | 593 | 80.6% | 57 min | 0.17% | B+ |
| American Airlines | 1,060 | 75.3% | 93 min | 0.94% | B+ |
| Alaska Airlinesthin sample | 17 | 70.6% | 30 min | 0.00% | C+ |
| Southwest Airlines | 2,386 | 68.2% | 47 min | 0.38% | C+ |
The spread between Spirit and Southwest is 19 points, wide enough that it should decide the booking. On a hundred trips that is 19 more arrivals inside the on-time window.
Flight by flight
Frontier flight numbers on LAS to LAX
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 12 points, against 19 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am86 flights89.4%
- 8am–11am109 flights79.8%
- 11am–2pm75 flights77.3%
- 2pm–5pm83 flights80.7%
- 5pm–8pm240 flights78.8%
- 8pm–5am—
Scale runs 70% to 95%. Rows with fewer than 30 flights show a dash.
The weak window here is the middle of the day, not the evening: 11am–2pm runs 77.3% on time against 89.4% for 5am–8am. That shape usually means a departure bank rather than an accumulating delay, so the recovery later in the afternoon is real rather than noise. The 5pm–8pm window is the busiest, with 240 flights scheduled in it.
Across the year
Frontier on LAS to LAX through the year
December is the weak month at 74.0% on time, against 91.4% in February. 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. June was the busiest month here, with 66 flights.
Across the week, Wednesday is the strongest day at 91.7% on time and Sunday the weakest at 74.8%. 17 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 47% of the 6,503 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.
- 47%Late-arriving aircraft
- 37%Carrier
- 15%National Airspace System
- 1%Extreme weather
47% 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 6,503 reported delay minutes here, that single category outweighs weather by 32 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 6,503 reported delay minutes.
The largest share of delay minutes, 37%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 2,381 of the 6,503 delay minutes reported here.
Cancellations are rare at 0.17%, 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
5.7% 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 about an hour, which a normal layover absorbs.
At 236 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 70.0% on time across 594 flights, 11 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 11 points of difference.
One caution: this is a thin sample. 593 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 LAS to LAX
Put together: treat all of this as provisional. 593 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 80.6% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 592 completed flights over 12 months sit behind that.
Related
Where to go next
- LAS to LAX, every carrier
- Frontier on LAX to LAS, the return leg
- Spirit Airlines on LAS to LAX87.3%
- United Airlines on LAS to LAX86.2%
- SkyWest Airlines on LAS to LAX84.0%
- Delta Air Lines on LAS to LAX84.0%
- American Airlines on LAS to LAX75.3%
- Southwest Airlines on LAS to LAX68.2%
- Frontier Airlines network-wide record
- Harry Reid International (LAS) delay statistics
- Los Angeles International (LAX) delay statistics
- Why the first flight of the morning is statistically safest
- Same route, different airline: where the carrier you pick matters most
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.