Carrier route record
OOSAN→LAS
SkyWest Airlines · San Diego to Las Vegas
- Flights
- 1,491
- Period
- July 2025 to June 2026
- Share of route
- 25%
- Carriers
- 4
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with SkyWest Airlines.
SkyWest on SAN to LAS lands a B, about a point 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 a little over an hour on average. That is a workable record, not a spotless one. That rests on 1,491 flights. The strongest carrier on the route with a full sample, Southwest Airlines, flew 3,730 at 74.7% on time.
The US average over the same twelve months is 77.6%, so there is little to separate SkyWest on SAN to LAS from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
78.9%
Arrivals under 15 minutes late, of 1,471 completed flights
Avg delay
70 min
Across delayed arrivals only, not all flights
Cancelled
1.34%
National rate is 1.81%
Whole route
75.6%
Every carrier on SAN to LAS, 5,868 flights
These figures cover 1,491 flights between July 2025 and June 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.
Carrier by carrier
SkyWest against every carrier on SAN to LAS
SkyWest flew 1,491 of the 5,868 flights on SAN to LAS, about 25% of it. Its 78.9% on time is 3 points better than the route as a whole, which runs 75.6%. Ranked by on-time rate it is number two of four carriers on the route, where the range runs from Spirit at 84.2% to Frontier at 66.6%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.
The choice of carrier is not cosmetic here. Southwest Airlines arrives on time 74.7% of the time; Frontier Airlines manages 66.6%. Sample sizes sit next to every figure, because a two-point gap across 389 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Spirit Airlinesthin sample | 258 | 84.2% | 65 min | 1.94% | B |
| SkyWest Airlines (this page) | 1,491 | 78.9% | 70 min | 1.34% | B |
| Southwest Airlines | 3,730 | 74.7% | 53 min | 1.21% | C |
| Frontier Airlines | 389 | 66.6% | 95 min | 2.06% | C |
Southwest leads Frontier by 8 points. Real, but small enough that a better departure time on the weaker carrier can outweigh it.
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 12 points, against 8 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am21 flights—
- 8am–11am426 flights84.2%
- 11am–2pm273 flights72.7%
- 2pm–5pm273 flights79.7%
- 5pm–8pm386 flights74.0%
- 8pm–5am112 flights84.1%
Scale runs 65% to 90%. 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 72.7% on time against 84.2% for 8am–11am. 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 8am–11am window is the busiest, with 426 flights scheduled in it.
Across the year
SkyWest on SAN to LAS through the year
Delays peak in May, when the on-time rate falls to 74.5%. January is the strongest month at 86.7%. Moving a flexible trip across that boundary buys 12 points. July was the busiest month here, with 201 flights.
Across the week, Wednesday is the strongest day at 84.8% on time and Friday the weakest at 67.9%. 17 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 22,000 reported delay minutes.
- 38%Carrier
- 29%National Airspace System
- 24%Late-arriving aircraft
- 9%Extreme weather
The largest share of delay minutes, 38%, 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 8,238 of the 22,000 delay minutes reported here. The split is drawn from 21,719 reported delay minutes.
Cancellations sit at 1.34% against a national 1.81%, which is ordinary. Diversions add another 0.00%.
Connections and stage length
What a delay here costs
7.9% 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 a little over 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 8am–11am window matters as much as it does.
The return leg is a different operation and performs like one: it runs 74.6% on time across 1,492 flights, 4 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 4 points of difference.
The sample behind these figures is 1,491 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 SAN to LAS
Put together: the calendar is the biggest lever here, not the carrier or the hour. January runs 86.7% on time and May 74.5%, a swing of 12 points. If the dates move at all, move them out of May before you think about anything else. 1,471 completed flights over 12 months sit behind that.
Related
Where to go next
- SAN to LAS, every carrier
- SkyWest on LAS to SAN, the return leg
- Spirit Airlines on SAN to LAS84.2%
- Southwest Airlines on SAN to LAS74.7%
- Frontier Airlines on SAN to LAS66.6%
- SkyWest Airlines network-wide record
- San Diego International (SAN) delay statistics
- Harry Reid International (LAS) delay statistics
- The best time of day to fly, according to 7.04 million flight records
- Worst months to fly in the US, ranked by the data
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.