Carrier route record
OOLAS→SAN
SkyWest Airlines · Las Vegas to San Diego
- Flights
- 1,492
- Period
- July 2025 to June 2026
- Share of route
- 25%
- Carriers
- 5
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with SkyWest Airlines.
SkyWest on LAS to SAN sits in the middle of the pack with a C. Close to three flights in four arrive on time by the DOT's definition, 3 points worse than the national rate of 77.6%. The late ones land about an hour behind schedule. That rests on 1,492 flights. The strongest carrier on the route with a full sample, Frontier Airlines, flew 389 at 68.2% on time.
The US average over the same twelve months is 77.6%, so there is little to separate SkyWest on LAS to SAN from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
74.6%
Arrivals under 15 minutes late, of 1,468 completed flights
Avg delay
63 min
Across delayed arrivals only, not all flights
Cancelled
1.34%
National rate is 1.81%
Whole route
66.7%
Every carrier on LAS to SAN, 5,877 flights
These figures cover 1,492 flights between July 2025 and June 2026. Beyond the headline rate, 8.7% 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
SkyWest against every carrier on LAS to SAN
SkyWest flew 1,492 of the 5,877 flights on LAS to SAN, about 25% of it. Its 74.6% on time is 8 points better than the route as a whole, which runs 66.7%. Ranked by on-time rate it is number three of five carriers on the route, where the range runs from Alaska at 100.0% to Southwest at 62.5%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.
The two carriers here are closely matched: 6 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 |
|---|---|---|---|---|---|
| Alaska Airlinesthin sample | 1 | 100.0% | — | 0.00% | A+ |
| Spirit Airlinesthin sample | 257 | 78.7% | 72 min | 1.17% | B |
| SkyWest Airlines (this page) | 1,492 | 74.6% | 63 min | 1.34% | C |
| Frontier Airlines | 389 | 68.2% | 91 min | 1.29% | C |
| Southwest Airlines | 3,738 | 62.5% | 50 min | 0.99% | D+ |
No carrier stands out. Frontier tops the table at 68.2%, 6 points clear of the bottom, which is inside the range this kind of sample moves year to year.
Flight by flight
SkyWest flight numbers on LAS to SAN
Departure window
When SkyWest 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 6 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am179 flights85.7%
- 8am–11am420 flights77.9%
- 11am–2pm170 flights79.3%
- 2pm–5pm345 flights74.7%
- 5pm–8pm341 flights64.0%
- 8pm–5am37 flights55.6%
Scale runs 45% to 90%. Rows with fewer than 30 flights show a dash.
The 8pm–5am window is where this operation falls apart: 55.6% on time, against 85.7% for the 5am–8am 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 8am–11am window is the busiest, with 420 flights scheduled in it.
Across the year
SkyWest on LAS to SAN through the year
April is the best month on the calendar at 79.7% on time. Shoulder season thins the schedule and takes the summer weather with it, and the operation gets its margin back. July was the busiest month here, with 201 flights.
Across the week, Tuesday is the strongest day at 83.8% on time and Friday the weakest at 61.8%. 22 points is a smaller lever than departure hour, but it is free.
Delay causes
Why SkyWest runs late on this route
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 23,000 reported delay minutes.
- 41%Carrier
- 31%National Airspace System
- 22%Late-arriving aircraft
- 6%Extreme weather
The largest share of delay minutes, 41%, 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 9,563 of the 23,000 delay minutes reported here. The split is drawn from 23,450 reported delay minutes.
Cancellations sit at 1.34% against a national 1.81%, which is ordinary. Diversions add another 0.27%.
Connections and stage length
What a delay here costs
8.7% 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 258 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 78.9% on time across 1,491 flights, 4 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 4 points of difference.
The sample behind these figures is 1,492 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.
What to do with this
Booking SkyWest on LAS to SAN
Put together: the calendar is the biggest lever here, not the carrier or the hour. April runs 79.7% on time and May 60.8%, a swing of 19 points. If the dates move at all, move them out of May before you think about anything else. 1,468 completed flights over 12 months sit behind that.
Related
Where to go next
- LAS to SAN, every carrier
- SkyWest on SAN to LAS, the return leg
- Spirit Airlines on LAS to SAN78.7%
- Frontier Airlines on LAS to SAN68.2%
- Southwest Airlines on LAS to SAN62.5%
- SkyWest Airlines network-wide record
- Harry Reid International (LAS) delay statistics
- San Diego International (SAN) delay statistics
- The best time of day to fly, according to 7.04 million flight records
- Connecting flights: how much buffer the data says you need
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.