Carrier performance at one airport
F9→LAS
Frontier Airlines at Harry Reid International
- Departures
- 12,272
- Period
- July 2025 to June 2026
- Routes
- 25
- Rank here
- #9 of 11
Frontier Airlines at Las Vegas lands a B, level with the national rate of 77.6%. Roughly one flight in four arrive 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 12,272 flights, of which Delta Air Lines flew 15,755 at 85.6% on time.
Measured against the airport rather than the country, Frontier Airlines runs half a point behind the 77.9% weighted average across all carriers at LAS. That is the comparison worth making: every operator here works the same runways, the same airspace and the same weather.
Key figures
On time
77.7%
12,104 completed departures
Avg delay
76 min
Across delayed flights only
Cancelled
1.25%
At LAS, this carrier only
Rank here
#9
Of 11 carriers clearing the floor at LAS
These figures cover 12,000 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.
Against the competition
Every carrier at LAS, ranked
The choice of carrier is not cosmetic here. Delta Air Lines arrives on time 85.6% of the time; Hawaiian Airlines manages 69.4%. Sample sizes sit next to every figure, because a two-point gap across 855 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Delta Air Lines | 15,755 | 85.6% | 77 min | 1.00% | A |
| Allegiant Air | 7,115 | 83.8% | 74 min | 0.45% | B+ |
| Spirit Airlines | 8,396 | 82.8% | 77 min | 1.49% | B |
| American Airlines | 14,073 | 81.5% | 95 min | 1.86% | B |
| United Airlines | 15,170 | 80.7% | 67 min | 0.66% | B+ |
| SkyWest Airlines | 3,769 | 80.6% | 71 min | 1.01% | B |
| Alaska Airlines | 6,759 | 79.4% | 60 min | 1.02% | B |
| JetBlue Airways | 3,919 | 78.6% | 78 min | 1.91% | B |
| Frontier Airlines (this page) | 12,272 | 77.7% | 76 min | 1.25% | B |
| Southwest Airlines | 86,261 | 74.3% | 50 min | 0.58% | C+ |
| Hawaiian Airlines | 855 | 69.4% | 86 min | 0.47% | C+ |
The spread between Delta and Hawaiian is 16 points, wide enough that it should decide the booking. On a hundred trips that is 16 more arrivals inside the on-time window.
Route by route
Where Frontier Airlines flies from LAS
Frontier Airlines operates 25 routes out of LAS with enough volume to report. Route records inside one carrier at one airport still spread widely, because a short shuttle and a transcontinental have very different exposure to a late inbound.
| Route | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| LAS to DEN · Denver | 1,554 | 79.1% | 90 min | 0.97% | B+ |
| LAS to SFO · San Francisco | 875 | 64.3% | 70 min | 1.37% | D |
| LAS to PHX · Phoenix | 865 | 79.5% | 95 min | 1.16% | B |
| LAS to DFW · Dallas-Fort Worth | 813 | 79.9% | 85 min | 1.97% | B |
| LAS to ONT · Ontario | 724 | 82.0% | 77 min | 0.83% | B+ |
| LAS to CLE · Cleveland | 612 | 77.3% | 67 min | 1.31% | B |
| LAS to LAX · Los Angeles | 593 | 80.6% | 57 min | 0.17% | B+ |
| LAS to ATL · Atlanta | 561 | 74.5% | 70 min | 2.14% | C |
| LAS to SLC · Salt Lake City | 514 | 89.5% | 76 min | 1.36% | A |
| LAS to MCO · Orlando | 458 | 71.6% | 87 min | 0.44% | C+ |
| LAS to SAN · San Diego | 389 | 68.2% | 91 min | 1.29% | C |
| LAS to IAH · Houstonthin sample | 328 | 80.2% | 60 min | 1.22% | B |
| LAS to STL · St. Louisthin sample | 295 | 86.5% | 85 min | 2.03% | A |
| LAS to AUS · Austinthin sample | 291 | 81.8% | 64 min | 1.37% | B |
| LAS to SAT · San Antoniothin sample | 277 | 85.1% | 62 min | 0.72% | A+ |
| LAS to RNO · Renothin sample | 264 | 77.6% | 97 min | 1.89% | B |
| LAS to ELP · El Pasothin sample | 262 | 80.8% | 87 min | 0.76% | B+ |
| LAS to SEA · Seattlethin sample | 246 | 82.2% | 48 min | 0.81% | B+ |
| LAS to SNA · Santa Anathin sample | 214 | 81.7% | 61 min | 0.47% | B+ |
| LAS to SMF · Sacramentothin sample | 211 | 76.4% | 68 min | 1.42% | B |
| LAS to CVG · Cincinnatithin sample | 209 | 75.1% | 74 min | 1.91% | B |
| LAS to JFK · New Yorkthin sample | 202 | 81.5% | 57 min | 0.99% | B+ |
| LAS to SJC · San Josethin sample | 185 | 80.2% | 63 min | 1.62% | B |
| LAS to ORD · Chicagothin sample | 184 | 68.6% | 88 min | 4.35% | C− |
| LAS to PDX · Portlandthin sample | 173 | 76.2% | 53 min | 2.89% | B |
Departure window
Best time of day for this operation
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 17 points, against 16 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am1,756 flights88.8%
- 8am–11am2,047 flights81.1%
- 11am–2pm1,617 flights79.9%
- 2pm–5pm2,080 flights73.5%
- 5pm–8pm1,682 flights72.1%
- 8pm–5am3,090 flights73.9%
Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 88.8% of the time, against 72.1% for the evening window. That is 17 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 3,090 flights scheduled in it.
Across the year
Seasonal pattern
July is the worst month at 69.7% on time, 17 points below February, the best at 86.3%. 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. June was the busiest month here, with 1,243 flights.
Delay causes
What holds this operation up
- 49%Late-arriving aircraft
- 30%Carrier
- 19%National Airspace System
- 2%Extreme weather
49% 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 204,000 reported delay minutes here, that single category outweighs weather by 25 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 204,434 reported delay minutes.
Cancellations sit at 1.25% against a national 1.81%, which is ordinary. Diversions add another 0.11%.
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 are the a little over an hour kind, which a normal layover absorbs.
12,272 flights sit behind these numbers, which is a large enough sample that the headline rate is not moving on noise. Where a sub-group falls below 30 flights the site shows a dash instead of a percentage.
Put together: the calendar is the biggest lever here, not the carrier or the hour. February runs 86.3% on time and July 69.7%, a swing of 17 points. If the dates move at all, move them out of July before you think about anything else. 12,104 completed flights over 12 months sit behind that.
Common questions
Frontier Airlines at LAS
How often is Frontier Airlines at LAS delayed?
Roughly one flight in four arrive at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 22.3% of the 12,272 flights in this analysis, against 22.4% nationally. Delayed flights are late by a little over an hour on average.
Which airline is most reliable on Frontier Airlines at LAS?
Delta Air Lines leads at 85.6% on time across 15,755 flights. Hawaiian Airlines is at the other end on 69.4%, a gap of 16 points. Sample size matters as much as the percentage: a rate built from a few hundred flights moves around far more than one built from ten thousand.
What time of day has the fewest delays on Frontier Airlines at LAS?
The 5am–8am departure window is the strongest at 88.8% on time. The 5pm–8pm window is the weakest at 72.1%, 17 points behind. Later departures inherit delays from earlier flights the same aircraft has already flown, which is why the curve slopes the way it does.
How bad are July delays on Frontier Airlines at LAS?
July is the weakest month at 69.7% on time, compared with 86.3% in February. Across the year that is 17 points between the best and worst months. Moving flexible dates out of that month is one of the few things that reliably helps.
Related
Where to go next
- Frontier Airlines network-wide record
- Harry Reid International (LAS) all carriers
- LAS to DEN route record79.1%
- LAS to SFO route record64.3%
- LAS to PHX route record79.5%
- LAS to DFW route record79.9%
- 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. Updated monthly. How this data is collected.