Carrier performance at one airport
AS→LAS
Alaska Airlines at Harry Reid International
- Departures
- 7,098
- Period
- September 2025 to August 2026
- Routes
- 7
- Rank here
- #7 of 11
Alaska Airlines at Las Vegas lands a B, about a point better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by about an hour on average. That rests on 7,098 flights, of which Spirit Airlines flew 5,509 at 85.0% on time.
Measured against the airport rather than the country, Alaska Airlines runs 2 points ahead of the 76.9% 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
78.7%
7,011 completed departures
Avg delay
60 min
Across delayed flights only
Cancelled
1.01%
At LAS, this carrier only
Rank here
#7
Of 11 carriers clearing the floor at LAS
These figures cover 7,098 flights between September 2025 and August 2026. The median arrival is 6 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.
Against the competition
Every carrier at LAS, ranked
The choice of carrier is not cosmetic here. Spirit Airlines arrives on time 85.0% of the time; Hawaiian Airlines manages 70.6%. Sample sizes sit next to every figure, because a two-point gap across 594 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Spirit Airlines | 5,509 | 85.0% | 87 min | 1.89% | A |
| Delta Air Lines | 15,583 | 84.4% | 79 min | 1.08% | B |
| Allegiant Air | 7,022 | 83.1% | 75 min | 0.43% | B+ |
| American Airlines | 14,079 | 80.5% | 98 min | 1.68% | B |
| SkyWest Airlines | 3,247 | 79.5% | 66 min | 0.95% | B+ |
| United Airlines | 15,169 | 79.5% | 71 min | 0.63% | B+ |
| Alaska Airlines (this page) | 7,098 | 78.7% | 60 min | 1.01% | B |
| JetBlue Airways | 4,040 | 77.5% | 83 min | 2.40% | B |
| Frontier Airlines | 13,095 | 75.4% | 79 min | 1.46% | B |
| Southwest Airlines | 86,407 | 73.4% | 50 min | 0.60% | C+ |
| Hawaiian Airlines | 594 | 70.6% | 101 min | 0.34% | C+ |
The spread between Spirit and Hawaiian is 14 points, wide enough that it should decide the booking. On a hundred trips that is 14 more arrivals inside the on-time window.
Route by route
Where Alaska Airlines flies from LAS
Alaska Airlines operates 7 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 SEA · Seattle | 2,610 | 83.2% | 66 min | 1.19% | B |
| LAS to PDX · Portland | 1,570 | 82.7% | 59 min | 0.57% | B+ |
| LAS to SFO · San Francisco | 1,102 | 63.3% | 52 min | 0.91% | D+ |
| LAS to HNL · Honolulu | 811 | 72.7% | 67 min | 1.11% | C |
| LAS to OGG · Kahuluithin sample | 243 | 80.3% | 78 min | 1.65% | B |
| LAS to ANC · Anchoragethin sample | 219 | 71.0% | 54 min | 1.37% | C |
| LAS to BOI · Boisethin sample | 71 | 85.9% | 104 min | 0.00% | A+ |
Flight by flight
Alaska Airlines flight numbers from LAS
10 Alaska Airlines flight numbers leaving LAS flew their main route often enough to have a record of their own. Grouped by destination.
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 15 points, against 14 points between the best and worst carrier.
- 5am–8am1,514 flights87.4%
- 8am–11am1,102 flights76.6%
- 11am–2pm1,158 flights85.5%
- 2pm–5pm1,061 flights72.7%
- 5pm–8pm1,194 flights72.5%
- 8pm–5am1,069 flights73.9%
Scale runs 65% to 95%.
Book the early departure. Flights leaving between 5am–8am arrive on time 87.4% of the time, against 72.5% for the evening window. That is 15 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5am–8am window is the busiest, with 1,514 flights scheduled in it.
Across the year
Seasonal pattern
August is the worst month at 72.9% on time, 16 points below February, the best at 88.5%. 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. March was the busiest month here, with 716 flights.
Delay causes
What holds this operation up
- 41%Late-arriving aircraft
- 31%Carrier
- 23%National Airspace System
- 3%Extreme weather
- 0%Security
41% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 90,000 reported delay minutes here, that single category outweighs weather by 12 to one. The split is drawn from 89,958 reported delay minutes.
Cancellations sit at 1.01% against a national 1.89%, which is ordinary. Diversions add another 0.21%.
6.0% of arrivals land an hour or more late, close to the national 8.3%, so 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.
The sample behind these figures is 7,098 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
Put together: the calendar is the biggest lever here, not the carrier or the hour. February runs 88.5% on time and August 72.9%, a swing of 16 points. If the dates move at all, move them out of August before you think about anything else. 7,011 completed flights over 12 months sit behind that.
Common questions
Alaska Airlines at LAS
How often is Alaska Airlines at LAS delayed?
About one flight in five arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 21.3% of the 7,098 flights in this analysis, against 22.7% nationally. Delayed flights are late by about an hour on average.
Which airline is most reliable on Alaska Airlines at LAS?
Spirit Airlines leads at 85.0% on time across 5,509 flights. Hawaiian Airlines is at the other end on 70.6%, a gap of 14 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 Alaska Airlines at LAS?
The 5am–8am departure window is the strongest at 87.4% on time. The 5pm–8pm window is the weakest at 72.5%, 15 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 August delays on Alaska Airlines at LAS?
August is the weakest month at 72.9% on time, compared with 88.5% in February. Across the year that is 16 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
- Alaska Airlines network-wide record
- Harry Reid International (LAS) all carriers
- LAS to SEA route record83.2%
- LAS to PDX route record82.7%
- LAS to SFO route record63.3%
- LAS to HNL route record72.7%
- Denver, Salt Lake City, Phoenix and Las Vegas: the Mountain West hubs
- Why the first flight of the morning is statistically safest
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.