Best Time to Fly SNA to SLC: On-Time Stats by Hour & Airline
John Wayne Airport-Orange County → Salt Lake City International
Data through July 2026 · Last updated October 18, 2026
1,856 flights were scheduled from Santa Ana (SNA) to Salt Lake City (SLC) in the last 12 months, and 86.7% of those that flew arrived on time, 9.1 points above the US average of 77.6%.
Delta Air Lines was the most punctual of the 3 airlines on the route at 86.8%, while Frontier Airlines trailed at 86.0%.
March has been the best month (91% on time) and Sunday the weakest day of the week (83%).
0.7% of flights were cancelled, versus 1.8% nationally.
SNA to SLC on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Delta Air Lines | 86.8% | 102 min | 0.6% | 1,629 |
| SkyWest Airlines | 86.3% | 116 min | 0.8% | 125 |
| Frontier Airlines | 86.0% | 58 min | 1.0% | 101 |
| Allegiant Air | Limited data | 1 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SNA to SLC
On-time arrival % by scheduled departure hour (local time), 3,555 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 91.1% | 0.2% | 632 |
| 8am–9am | 89.9% | 0.0% | 99 |
| 9am–10am | 90.7% | 0.8% | 522 |
| 10am–11am | 90.2% | 0.0% | 254 |
| 11am–12pm | Limited data | 7 | |
| 12pm–1pm | 78.5% | 0.0% | 66 |
| 1pm–2pm | 81.5% | 0.5% | 666 |
| 2pm–3pm | Limited data | 2 | |
| 3pm–4pm | Limited data | 9 | |
| 4pm–5pm | 85.0% | 0.0% | 40 |
| 5pm–6pm | 83.4% | 0.7% | 710 |
| 6pm–7pm | Limited data | 25 | |
| 7pm–8pm | 86.3% | 0.4% | 523 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SNA to SLC
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 81.8% | -6.1 pts | 0.0% | 66 |
| Christmas & New Year (Dec 20 - Jan 3) | 74.3% | -13.6 pts | 0.7% | 145 |
| Summer peak (Jun 15 - Aug 15) | 83.6% | -4.3 pts | 0.3% | 593 |
| All other days | 87.9% | — | 0.4% | 2,751 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).