82% of flights from Santa Ana to Las Vegas arrived on time over the past 12 months. That is better than the typical U.S. route. The 7 a.m. departures ran on time 96% of the time; the 3 p.m. ones 70%. Most reliable airline: Spirit Airlines (88%). 7% 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 SNA → LAS: when a flight was late, it was under 45 minutes late 53% of the time. About 1 in 17 flights landed an hour or more late, and 1 in 124 three hours or more; 0.7% were cancelled outright.
- On time or early82%
- 15–30 min late5.8%
- 30–60 min late5.4%
- 1–2 hours late4.5%
- 2–3 hours late0.7%
- 3+ hours late0.8%
- Diverted0.0%
- Cancelled0.7%
Share of all 4,080 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 | 2,513 | 81% | 0.3% | −7 min | 5.7% | +54 min | Southwest Airlines |
| Delta Air Lines | 726 | 86% | 0.7% | −12 min | 5.8% | +95 min | SkyWest |
| Spirit Airlines | 606 | 88% | 2.0% | −8 min | 4.5% | +80 min | Spirit Airlines |
| Frontier Airlines | 235 | 69% | 1.7% | −4 min | 12.8% | +94 min | Frontier 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 SNA). Delays build through the day as late planes knock on, so early flights usually do best.
By airline and hour
| Departs | Southwest Airlines | Delta Air Lines | Spirit Airlines |
|---|---|---|---|
| 6 a.m. | 97% | — | 94% |
| 7 a.m. | 96% | — | — |
| 8 a.m. | 93% | — | — |
| 9 a.m. | 91% | 82% | — |
| 10 a.m. | 80% | 92% | — |
| 11 a.m. | 86% | 85% | — |
| 1 p.m. | 76% | — | 84% |
| 2 p.m. | 69% | — | — |
| 3 p.m. | 70% | — | — |
| 4 p.m. | 74% | — | — |
| 5 p.m. | 69% | 94% | — |
| 6 p.m. | 80% | — | — |
| 7 p.m. | 76% | 80% | — |
| 8 p.m. | 64% | — | — |
Last flight of the day
On SNA → LAS, each airline's last flight of the day was cancelled 1.3% of the time, against 0.4% for its earlier flights (2.8× as often). It arrived 3+ hours late 0.5% 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 |
|---|---|---|---|---|---|
| Delta Air Lines | 7:59 p.m. | 1.4% | 0.8% | 0.0% | first flight 10:45 a.m. |
| Spirit Airlines | — | 1.3% | 0.9% | 2.5% | — |
| Southwest Airlines | 7:45 p.m. | 1.1% | 0.0% | 0.2% | first flight 7:00 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.
If you need to be in LAS tonight, book an earlier flight so there's a backup if it's cancelled.
By month
Each calendar month pooled over 2023–2026. Best: December (85%). Worst: July (77%).
By day of week
| Day | Flights | On time | Cancelled |
|---|---|---|---|
| Monday | 658 | 81% | 0.3% |
| Tuesday | 517 | 85% | 0.8% |
| Wednesday | 513 | 88% | 0.2% |
| Thursday | 629 | 80% | 0.5% |
| Friday | 648 | 76% | 1.4% |
| Saturday | 471 | 89% | 0.4% |
| Sunday | 644 | 80% | 1.2% |
Why flights were late
Share of delay minutes on flights 15+ minutes late, as reported to BTS by the airlines.
Cancellations: airline 14 · weather 10 · air traffic/airport 5
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 |
|---|---|---|---|---|---|---|
| DL 4078 | 9:59 a.m. | 349 | 88% | 0.0% | −9 min | SkyWest |
| DL 4179 | 7:59 p.m. | 141 | 80% | 1.4% | −16 min | SkyWest |
Worst days in the past year
| Date | Flights | On time | Cancelled |
|---|---|---|---|
| Jan 1, 2026 | 9 | 11% | 0 |
| May 18, 2026 | 12 | 25% | 0 |
| Feb 16, 2026 | 14 | 36% | 1 |
| Nov 18, 2025 | 11 | 36% | 0 |
| Jun 19, 2026 | 11 | 36% | 3 |
Nearby airport alternatives
Other ways to make the same trip, using airports within 60 miles of Santa Ana or Las Vegas. None has been clearly more reliable than SNA → LAS.
| Route | Flights | On time | Cancelled |
|---|---|---|---|
| SNA → LAS (this route) | 4,080 | 82% | 0.7% |
| LGB → LAS Long Beach to Las Vegas Harry Reid | 2,087 | 80% | 0.5% |
| BUR → LAS Hollywood Burbank to Las Vegas Harry Reid | 4,116 | 79% | 1.7% |
| ONT → LAS Ontario to Las Vegas Harry Reid | 2,469 | 76% | 0.9% |
| LAX → LAS Los Angeles LAX to Las Vegas Harry Reid | 8,729 | 75% | 1.0% |
Questions
How often are flights from SNA to LAS on time?
82% of 4,080 scheduled flights from Santa Ana, CA to Las Vegas, NV arrived within 15 minutes of schedule between September 2025 and August 2026. 0.7% were cancelled.
What is the best time of day to fly SNA to LAS?
Flights scheduled to leave at 7 a.m. were the most reliable (96% on time). The 3 p.m. departures were the least (70%).
Which airline is most on time from SNA to LAS?
Spirit Airlines: 88% of its 606 flights on the route arrived on time. Southwest Airlines: 81%. Delta Air Lines: 86%. Frontier Airlines: 69%.
What month has the most delays from SNA to LAS?
July (77% on time). The best month is December (85%), over 2023–2026.
Is the last flight of the day from SNA to LAS more likely to be cancelled?
Yes. Each airline's last SNA–LAS flight of the day was cancelled 1.3% of the time over the past year, against 0.4% for its earlier flights. If the last flight is cancelled, the next one is usually the following morning.
Related
- LAS → SNA (return)
- Orange County John Wayne (SNA) delays by hour
- Flights into Las Vegas Harry Reid (LAS)
- Southwest Airlines on-time record
- Delta Air Lines on-time record
- Spirit Airlines on-time record
- Frontier 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.