Best Time to Fly SNA to IAH: On-Time Stats by Hour & Airline
John Wayne Airport-Orange County → George Bush Intercontinental/Houston
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 87.8% of Santa Ana (SNA) to Houston (IAH) flights arrived on time (1,092 scheduled flights). That is 10.2 points above the national average of 77.6%.
United Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Tuesday was the most reliable day (91% on time) and July the worst month (77%).
The cancellation rate was 0.0% (US average 1.8%).
SNA to IAH 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 | 87.8% | 70 min | 0.0% | 1,092 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SNA to IAH
On-time arrival % by scheduled departure hour (local time), 2,305 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 90.2% | 0.5% | 207 |
| 7am–8am | 93.5% | 0.0% | 92 |
| 8am–9am | 94.7% | 0.4% | 533 |
| 10am–11am | 97.7% | 0.0% | 176 |
| 11am–12pm | 71.9% | 0.0% | 89 |
| 12pm–1pm | 85.8% | 0.3% | 639 |
| 2pm–3pm | 82.3% | 0.0% | 34 |
| 3pm–4pm | 81.6% | 0.2% | 535 |
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 IAH
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) | 82.5% | -7.7 pts | 0.0% | 40 |
| Christmas & New Year (Dec 20 - Jan 3) | 77.5% | -12.8 pts | 0.0% | 103 |
| Summer peak (Jun 15 - Aug 15) | 80.5% | -9.7 pts | 0.5% | 385 |
| All other days | 90.2% | — | 0.2% | 1,777 |
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).