Best Time to Fly IAH to SNA: On-Time Stats by Hour & Airline
George Bush Intercontinental/Houston → John Wayne Airport-Orange County
Data through July 2026 · Last updated October 18, 2026
1,092 flights were scheduled from Houston (IAH) to Santa Ana (SNA) in the last 12 months, and 87.5% of those that flew arrived on time, 9.9 points above the US average of 77.6%.
United Airlines was the only reporting airline with regular flights on this route.
February has been the best month (92% on time) and Thursday the weakest day of the week (83%).
0.0% of flights were cancelled, versus 1.8% nationally.
IAH 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 |
|---|---|---|---|---|
| United Airlines | 87.5% | 46 min | 0.0% | 1,092 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly IAH to SNA
On-time arrival % by scheduled departure hour (local time), 2,304 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 8am–9am | Limited data | 5 | |
| 9am–10am | 90.0% | 0.3% | 725 |
| 11am–12pm | 92.5% | 0.0% | 53 |
| 12pm–1pm | 83.4% | 0.2% | 569 |
| 4pm–5pm | 84.8% | 0.0% | 33 |
| 5pm–6pm | 85.6% | 0.5% | 202 |
| 6pm–7pm | Limited data | 2 | |
| 7pm–8pm | 88.4% | 0.0% | 233 |
| 8pm–9pm | 83.5% | 0.8% | 482 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on IAH 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) | 82.0% | -5.4 pts | 0.0% | 40 |
| Christmas & New Year (Dec 20 - Jan 3) | 85.0% | -2.5 pts | 0.0% | 103 |
| Summer peak (Jun 15 - Aug 15) | 82.3% | -5.2 pts | 0.5% | 385 |
| All other days | 87.5% | — | 0.3% | 1,776 |
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).