Best Time to Fly ATL to SNA: On-Time Stats by Hour & Airline
Hartsfield-Jackson Atlanta International → John Wayne Airport-Orange County
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 75.9% of Atlanta (ATL) to Santa Ana (SNA) flights arrived on time (1,033 scheduled flights). That is 1.7 points below the national average of 77.6%.
Delta Air Lines was the only reporting airline with regular flights on this route.
October has been the best month (84% on time) and Thursday the weakest day of the week (73%).
0.9% of flights were cancelled, versus 1.8% nationally.
ATL 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 |
|---|---|---|---|---|
| Delta Air Lines | 75.9% | 51 min | 0.9% | 1,033 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ATL to SNA
On-time arrival % by scheduled departure hour (local time), 2,064 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 8am–9am | Limited data | 16 | |
| 9am–10am | 75.8% | 0.8% | 526 |
| 10am–11am | 68.5% | 0.8% | 128 |
| 11am–12pm | 77.2% | 0.0% | 263 |
| 3pm–4pm | 80.2% | 0.0% | 86 |
| 4pm–5pm | 81.2% | 0.0% | 48 |
| 5pm–6pm | 74.2% | 1.8% | 381 |
| 6pm–7pm | 78.7% | 0.6% | 175 |
| 7pm–8pm | Limited data | 10 | |
| 8pm–9pm | 77.2% | 0.7% | 431 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on ATL 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) | 62.9% | -14.2 pts | 0.0% | 35 |
| Christmas & New Year (Dec 20 - Jan 3) | 70.9% | -6.2 pts | 0.0% | 80 |
| Summer peak (Jun 15 - Aug 15) | 75.2% | -1.9 pts | 0.7% | 412 |
| All other days | 77.1% | — | 0.8% | 1,537 |
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).