Route reliability record
LAS→SNA
Las Vegas to Santa Ana
- Flights
- 4,387
- Period
- June 2025 to May 2026
- Distance
- 226 mi
- Carriers
- 4
This route lands a B+, 5 points better than the national rate of 77.4%. About one flight in six arrive 15 minutes late or worse, and those flights are late by about 55 minutes on average. That is a workable record, not a spotless one. That rests on 4,387 flights, of which Spirit Airlines flew 889 at 87.3% on time.
Spirit Airlines is the most reliable of the three carriers covered here at 87.3% on time across 889 flights.
Key figures
On time
82.2%
Arrivals under 15 minutes late, of 4,351 completed flights
Avg delay
55 min
Across delayed arrivals only, not all flights
Cancelled
0.68%
National rate is 1.80%
Best carrier
Spirit
87.3% on time across 889 flights
These figures cover 4,387 flights between June 2025 and May 2026. The median arrival is 7 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
Which airline is most reliable on LAS to SNA
The choice of carrier is not cosmetic here. Spirit Airlines arrives on time 87.3% of the time; Southwest Airlines manages 79.4%. Sample sizes sit next to every figure, because a two-point gap across 2,500 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Spirit Airlines | 889 | 87.3% | 67 min | 1.35% | A |
| SkyWest Airlines | 786 | 85.5% | 71 min | 0.64% | A+ |
| Frontier Airlinesthin sample | 212 | 80.9% | 62 min | 1.42% | B |
| Southwest Airlines | 2,500 | 79.4% | 48 min | 0.40% | B+ |
Spirit leads Southwest by 8 points. Real, but small enough that a better departure time on the weaker carrier can outweigh it.
Departure window
The best time of day to leave
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 19 points, against 8 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am340 flights94.0%
- 8am–11am945 flights85.8%
- 11am–2pm765 flights82.7%
- 2pm–5pm813 flights78.4%
- 5pm–8pm860 flights74.6%
- 8pm–5am664 flights84.8%
Scale runs 65% to 100%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 94.0% of the time, against 74.6% for the evening window. That is 19 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on.
Across the year
When delays peak on this route
Twelve months, one bar each, drawn from the same 4,387 flights. The strip shows how much of this route's record is set by the calendar rather than by the operation.
Delays peak in September, when the on-time rate falls to 77.3%. January is the strongest month at 89.1%. Moving a flexible trip across that boundary buys 12 points.
Across the week, Saturday is the strongest day at 88.7% on time and Sunday the weakest at 77.1%. 12 points is a smaller lever than departure hour, but it is free.
Delay causes
Why this route gets delayed
One category carries most of the weight here. Carrier accounts for 42% of the 42,000 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 42%Carrier
- 36%Late-arriving aircraft
- 18%National Airspace System
- 3%Extreme weather
- 0%Security
36% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 42,000 reported delay minutes here, that single category outweighs weather by 13 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit.
The largest share of delay minutes, 42%, 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 18,000 of the 42,000 delay minutes reported here.
Cancellations are rare at 0.68%, below the national 1.80% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and stage length
What a delay here actually costs
Badly late arrivals are rare here: only 4.8% land an hour or more behind schedule, against 8.2% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
At 226 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 runs 83.3% on time across 4,386 flights, within about a point of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
The sample behind these figures is 4,387 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 this route
Put together: avoid the 5pm–8pm departure. It runs 74.6% on time against 94.0% for the 5am–8am slot, and that 19 points is the largest single thing you control here. Spirit Airlines is the strongest operator if the fares are close.
Common questions
LAS to SNA questions
How often is LAS to SNA delayed?
About one flight in six arrive at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 17.8% of the 4,387 flights in this analysis, against 22.6% nationally. Delayed flights are late by about 55 minutes on average.
Which airline is most reliable on LAS to SNA?
Spirit Airlines leads at 87.3% on time across 889 flights. Southwest Airlines is at the other end on 79.4%, a gap of 8 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 LAS to SNA?
The 5am–8am departure window is the strongest at 94.0% on time. The 5pm–8pm window is the weakest at 74.6%, 19 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 September delays on LAS to SNA?
September is the weakest month at 77.3% on time, compared with 89.1% in January. Across the year that is 12 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
- SNA to LAS — the return legseparate record
- Harry Reid International (LAS) delay statistics
- John Wayne Airport (SNA) delay statistics
- Spirit Airlines on-time record87.3%
- SkyWest Airlines on-time record85.5%
- Frontier Airlines on-time record80.9%
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.05 million flight records
Direction matters. LAS to SNA and SNA to LAS are scored separately because they are separate operations, with different departure banks and different aircraft. Compare the return leg.
Source: US DOT Bureau of Transportation Statistics, on-time performance data, June 2025 to May 2026. Updated monthly. How this data is collected.