Best Time to Fly SEA to SNA: On-Time Stats by Hour & Airline
Seattle/Tacoma International → John Wayne Airport-Orange County
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 84.6% of Seattle (SEA) to Santa Ana (SNA) flights arrived on time (3,958 scheduled flights). That is 7.0 points above the national average of 77.6%.
Alaska Airlines was the most punctual of the 3 airlines on the route at 85.9%, while SkyWest Airlines trailed at 80.8%.
April has been the best month (89% on time) and Thursday the weakest day of the week (81%).
0.8% of flights were cancelled, versus 1.8% nationally.
SEA to SNA 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 |
|---|---|---|---|---|
| Alaska Airlines | 85.9% | 41 min | 0.8% | 2,580 |
| Delta Air Lines | 82.9% | 74 min | 1.0% | 942 |
| SkyWest Airlines | 80.8% | 43 min | 0.5% | 436 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SEA to SNA
On-time arrival % by scheduled departure hour (local time), 7,887 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 88.9% | 0.6% | 340 |
| 7am–8am | 87.6% | 0.9% | 1,103 |
| 8am–9am | 89.3% | 2.9% | 348 |
| 9am–10am | 82.5% | 0.8% | 381 |
| 10am–11am | 81.4% | 0.3% | 287 |
| 11am–12pm | 81.5% | 0.3% | 762 |
| 12pm–1pm | 79.0% | 0.5% | 211 |
| 1pm–2pm | 82.7% | 0.4% | 556 |
| 2pm–3pm | 82.5% | 0.0% | 308 |
| 3pm–4pm | 80.4% | 0.9% | 1,041 |
| 4pm–5pm | 89.8% | 0.5% | 206 |
| 5pm–6pm | 82.3% | 0.5% | 575 |
| 6pm–7pm | 85.3% | 1.3% | 539 |
| 7pm–8pm | 89.7% | 0.8% | 1,230 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SEA to SNA
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) | 82.9% | -3.8 pts | 0.7% | 153 |
| Christmas & New Year (Dec 20 - Jan 3) | 76.1% | -10.6 pts | 0.7% | 296 |
| Summer peak (Jun 15 - Aug 15) | 79.1% | -7.6 pts | 0.9% | 1,488 |
| All other days | 86.7% | — | 0.8% | 5,950 |
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).