Carrier route record
F9AUS→LAS
Frontier Airlines · Austin to Las Vegas
- Flights
- 291
- Period
- July 2025 to June 2026
- Share of route
- 10%
- Carriers
- 5
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Frontier Airlines.
Frontier on AUS to LAS draws a C. About one flight in three arrives at least 15 minutes late, and the typical late arrival is a little over an hour behind schedule. Build slack into anything you connect to. That rests on 291 flights. The strongest carrier on the route with a full sample, Southwest Airlines, flew 2,177 at 75.1% on time.
The national on-time rate over the same period is 77.6%, so Frontier on AUS to LAS runs 10 points behind the country as a whole. Across a thousand flights that is about 97 extra late arrivals.
Key figures
On time
67.9%
Arrivals under 15 minutes late, of 287 completed flights
Avg delay
74 min
Across delayed arrivals only, not all flights
Cancelled
1.37%
National rate is 1.81%
Whole route
73.8%
Every carrier on AUS to LAS, 2,866 flights
These figures cover 291 flights between July 2025 and June 2026. Beyond the headline rate, 12.2% 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 AUS to LAS
Frontier flew 291 of the 2,866 flights on AUS to LAS, about 10% of it. Its 67.9% on time is 6 points worse than the route as a whole, which runs 73.8%. Ranked by on-time rate it is last of five carriers on the route, where the range runs from Allegiant at 85.0% to Frontier at 67.9%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.
The two carriers here are closely matched: 5 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 |
|---|---|---|---|---|---|
| Allegiant Airthin sample | 20 | 85.0% | 86 min | 0.00% | A+ |
| Southwest Airlines | 2,177 | 75.1% | 49 min | 0.32% | B+ |
| Delta Air Lines | 365 | 70.2% | 85 min | 0.82% | C+ |
| Spirit Airlinesthin sample | 13 | 69.2% | 40 min | 0.00% | C+ |
| Frontier Airlines (this page)thin sample | 291 | 67.9% | 74 min | 1.37% | C |
No carrier stands out. Southwest tops the table at 75.1%, 5 points clear of the bottom, which is inside the range this kind of sample moves year to year.
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 30 points, against 5 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am—
- 8am–11am5 flights—
- 11am–2pm32 flights71.0%
- 2pm–5pm102 flights77.0%
- 5pm–8pm51 flights47.1%
- 8pm–5am101 flights68.0%
Scale runs 40% to 80%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is where this operation falls apart: 47.1% on time, against 77.0% for the 2pm–5pm slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 2pm–5pm window is the busiest, with 102 flights scheduled in it.
Across the year
Frontier on AUS to LAS through the year
- Jul–Sep 202568 flights77.3%
- Oct–Dec 202577 flights59.7%
- Jan–Mar 202677 flights73.3%
- Apr–Jun 202669 flights62.3%
Scale runs 50% to 85%. Rows with fewer than 30 flights show a dash.
Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 67.9% on time across 291 flights.
Frontier on AUS to LAS did not run the same all year. Its best quarter was Jul–Sep 2025 at 77.3% on time and its weakest Oct–Dec 2025 at 59.7%, a swing of 18 points on roughly 73 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
Across the week, Saturday is the strongest day at 81.1% on time and Monday the weakest at 56.4%. 25 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 61% of the 6,809 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.
- 61%Late-arriving aircraft
- 19%National Airspace System
- 17%Carrier
- 2%Extreme weather
61% 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 6,809 reported delay minutes here, that single category outweighs weather by 31 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 6,809 reported delay minutes.
Cancellations sit at 1.37% against a national 1.81%, which is ordinary. Diversions add another 0.00%.
Connections and stage length
What a delay here costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 12.2% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
The 1,090 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The return leg is a different operation and performs like one: it runs 81.8% on time across 291 flights, 14 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 14 points of difference.
One caution: this is a thin sample. 291 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 AUS to LAS
Put together: treat all of this as provisional. 291 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 67.9% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 287 completed flights over 12 months sit behind that.
Related
Where to go next
- AUS to LAS, every carrier
- Frontier on LAS to AUS, the return leg
- Southwest Airlines on AUS to LAS75.1%
- Delta Air Lines on AUS to LAS70.2%
- Frontier Airlines network-wide record
- Austin-Bergstrom International (AUS) 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.