Best Time to Fly PHX to HOU: On-Time Stats by Hour & Airline
Phoenix Sky Harbor International → William P Hobby
Data through July 2026 · Last updated October 18, 2026
2,119 flights were scheduled from Phoenix (PHX) to Houston (HOU) in the last 12 months, and 71.7% of those that flew arrived on time, 6.0 points below the US average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
January has been the best month (87% on time) and Friday the weakest day of the week (71%).
0.5% of flights were cancelled, versus 1.8% nationally.
PHX to HOU 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 |
|---|---|---|---|---|
| Southwest Airlines | 71.7% | 46 min | 0.5% | 2,119 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly PHX to HOU
On-time arrival % by scheduled departure hour (local time), 4,254 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 94.2% | 0.4% | 520 |
| 6am–7am | 93.5% | 0.0% | 170 |
| 7am–8am | 92.9% | 0.7% | 403 |
| 8am–9am | 88.1% | 0.4% | 262 |
| 9am–10am | 76.2% | 0.5% | 207 |
| 10am–11am | 82.0% | 0.3% | 306 |
| 11am–12pm | 77.2% | 0.0% | 207 |
| 12pm–1pm | 83.8% | 3.1% | 191 |
| 1pm–2pm | 68.5% | 0.0% | 199 |
| 2pm–3pm | 69.3% | 0.4% | 250 |
| 3pm–4pm | 63.7% | 0.0% | 223 |
| 4pm–5pm | 66.1% | 0.5% | 190 |
| 5pm–6pm | 62.0% | 0.7% | 276 |
| 6pm–7pm | 65.8% | 0.3% | 375 |
| 7pm–8pm | 52.8% | 0.4% | 230 |
| 8pm–9pm | 49.7% | 0.0% | 183 |
| 9pm–10pm | 64.6% | 0.0% | 48 |
| 10pm–11pm | Limited data | 14 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on PHX to HOU
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) | 83.3% | +6.2 pts | 0.0% | 90 |
| Christmas & New Year (Dec 20 - Jan 3) | 75.4% | -1.8 pts | 0.0% | 199 |
| Summer peak (Jun 15 - Aug 15) | 69.2% | -7.9 pts | 0.0% | 676 |
| All other days | 77.1% | — | 0.6% | 3,289 |
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).