60% of flights from Las Vegas to San Diego arrived on time over the past 12 months. That is worse than the typical U.S. route. The 6 a.m. departures ran on time 86% of the time; the 8 p.m. ones 43%. Most reliable airline: Delta Air Lines (76%). 13% of flights arrived more than an hour late or not at all.
How late?
The on-time rate treats a flight 20 minutes late the same as one 5 hours late. Here's the split for LAS → SAN: when a flight was late, it was under 45 minutes late 58% of the time. About 1 in 9 flights landed an hour or more late, and 1 in 97 three hours or more; 1.7% were cancelled outright.
- On time or early60%
- 15–30 min late14%
- 30–60 min late14%
- 1–2 hours late7.7%
- 2–3 hours late2.0%
- 3+ hours late1.0%
- Diverted0.2%
- Cancelled1.7%
Share of all 6,482 scheduled flights, past 12 months, by arrival time against schedule.
By airline
| Airline | Flights | On time | Cancelled | Typical arrival | 1h+ late | Avg when late | Operated by |
|---|---|---|---|---|---|---|---|
| Southwest Airlines | 3,757 | 58% | 0.9% | +8 min | 9.9% | +50 min | Southwest Airlines |
| Alaska Airlines | 1,809 | 58% | 3.8% | +6 min | 13.3% | +59 min | Horizon Air 61%, SkyWest 39%, Alaska Airlines 0% |
| Delta Air Lines | 489 | 76% | 0.2% | −3 min | 6.1% | +63 min | SkyWest |
| Frontier Airlines | 350 | 66% | 0.9% | 0 min | 13.1% | +90 min | Frontier Airlines |
| Spirit Airlines | 77 | — | — | — | — | — | Spirit Airlines |
Airline = the name on the ticket. Regional flights (e.g. "Delta Connection") count under the ticketing airline, and the operator is listed.
Best time of day to fly
On-time rate by scheduled departure hour (local time at LAS). Delays build through the day as late planes knock on, so early flights usually do best.
By airline and hour
| Departs | Southwest Airlines | Alaska Airlines | Delta Air Lines |
|---|---|---|---|
| 6 a.m. | 94% | 79% | — |
| 7 a.m. | 78% | 63% | — |
| 8 a.m. | 59% | — | 83% |
| 9 a.m. | 70% | — | — |
| 10 a.m. | 50% | 60% | — |
| 11 a.m. | 41% | 45% | — |
| noon | 60% | — | 73% |
| 1 p.m. | 47% | — | — |
| 2 p.m. | 60% | 48% | — |
| 3 p.m. | 54% | — | — |
| 4 p.m. | 57% | — | — |
| 5 p.m. | 49% | 57% | — |
| 6 p.m. | 41% | 47% | — |
| 7 p.m. | 47% | 33% | — |
| 8 p.m. | 41% | — | — |
| 9 p.m. | 50% | — | — |
| 10 p.m. | 51% | — | — |
Last flight of the day
On LAS → SAN, each airline's last flight of the day was cancelled 2.1% of the time, against 1.7% for its earlier flights, about the same. It arrived 3+ hours late 1.4% of the time (earlier flights: 0.9%). It matters more than the numbers suggest. Miss an earlier flight and there's another one that evening; miss the last one and you're usually waiting until morning.
| Airline | Last departure | Last: cancelled | Last: 3h+ late | Earlier: cancelled | Next morning |
|---|---|---|---|---|---|
| Alaska Airlines | 7:07 p.m. | 3.0% | 0.8% | 4.0% | first flight 6:50 a.m. |
| Delta Air Lines | 12:57 p.m. | 0.0% | 1.6% | 0.8% | first flight 12:57 p.m. |
| Southwest Airlines | 9:40 p.m. | 1.6% | 0.5% | 0.9% | first flight 6:05 a.m. |
Last flight = the airline's last scheduled departure on this route that day, on days it flies the route at least twice; past 12 months. Times are typical scheduled times over the latest three months.
By month
Each calendar month pooled over 2023–2026. Best: January (76%). Worst: July (58%).
By day of week
| Day | Flights | On time | Cancelled |
|---|---|---|---|
| Monday | 1,059 | 57% | 1.2% |
| Tuesday | 821 | 72% | 0.7% |
| Wednesday | 815 | 71% | 0.9% |
| Thursday | 1,026 | 53% | 1.5% |
| Friday | 1,033 | 50% | 3.6% |
| Saturday | 713 | 72% | 2.0% |
| Sunday | 1,015 | 56% | 1.6% |
Why flights were late
Share of delay minutes on flights 15+ minutes late, as reported to BTS by the airlines.
Cancellations: air traffic/airport 52 · airline 34 · weather 22
Month by month
Flight numbers on this route
Regular flights with at least 120 scheduled trips in the past year. Sorted by departure time.
| Flight | Departs | Flights | On time | Cancelled | Typical arrival | Operated by |
|---|---|---|---|---|---|---|
| AS 2416 | 11:11 a.m. | 124 | 57% | 4.0% | +8 min | Horizon Air |
| DL 3741 | 12:57 p.m. | 322 | 75% | 0.0% | −3 min | SkyWest |
| F9 1469 | 6:50 p.m. | 224 | 63% | 0.9% | +7 min | Frontier Airlines |
Worst days in the past year
| Date | Flights | On time | Cancelled |
|---|---|---|---|
| Dec 24, 2025 | 16 | 6% | 0 |
| Aug 24, 2026 | 20 | 10% | 0 |
| Aug 6, 2026 | 20 | 10% | 0 |
| Jan 2, 2026 | 19 | 11% | 1 |
| Jan 1, 2026 | 16 | 13% | 2 |
Questions
How often are flights from LAS to SAN on time?
60% of 6,482 scheduled flights from Las Vegas, NV to San Diego, CA arrived within 15 minutes of schedule between September 2025 and August 2026. 1.7% were cancelled.
What is the best time of day to fly LAS to SAN?
Flights scheduled to leave at 6 a.m. were the most reliable (86% on time). The 8 p.m. departures were the least (43%).
Which airline is most on time from LAS to SAN?
Delta Air Lines: 76% of its 489 flights on the route arrived on time. Southwest Airlines: 58%. Alaska Airlines: 58%. Frontier Airlines: 66%.
What month has the most delays from LAS to SAN?
July (58% on time). The best month is January (76%), over 2023–2026.
Is the last flight of the day from LAS to SAN more likely to be cancelled?
Not much. Each airline's last LAS–SAN flight of the day was cancelled 2.1% of the time over the past year, against 1.7% for its earlier flights. If the last flight is cancelled, the next one is usually the following morning.
Related
- SAN → LAS (return)
- Las Vegas Harry Reid (LAS) delays by hour
- Flights into San Diego (SAN)
- Southwest Airlines on-time record
- Alaska Airlines on-time record
- Delta Air Lines on-time record
- Frontier Airlines on-time record
- Spirit Airlines on-time record
- Connecting off this flight? Check the risk
Domestic flights by the airlines that report to the U.S. DOT, plus their regional partners. "On time" means arriving less than 15 minutes after schedule; cancelled and diverted flights count as not on time. Past performance is a guide, not a forecast. Method.