Best Time to Fly SAT to PHX: On-Time Stats by Hour & Airline
San Antonio International → Phoenix Sky Harbor International
Data through July 2026 · Last updated October 18, 2026
2,509 flights were scheduled from San Antonio (SAT) to Phoenix (PHX) in the last 12 months, and 81.6% of those that flew arrived on time, 4.0 points above the US average of 77.6%.
Among 4 airlines, Southwest Airlines led with 83.3% on time and Envoy Air was last with 76.8%.
Over 24 months, Tuesday was the most reliable day (87% on time) and June the worst month (64%).
The cancellation rate was 0.4% (US average 1.8%).
SAT to PHX 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 | 83.3% | 50 min | 0.2% | 1,378 |
| Frontier Airlines | 83.1% | 57 min | 0.0% | 65 |
| American Airlines | 79.5% | 115 min | 0.8% | 997 |
| Envoy Air | 76.8% | 35 min | 0.0% | 69 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SAT to PHX
On-time arrival % by scheduled departure hour (local time), 5,153 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 94.7% | 0.0% | 207 |
| 6am–7am | 96.1% | 1.1% | 548 |
| 7am–8am | 96.9% | 0.0% | 227 |
| 8am–9am | 87.8% | 0.7% | 547 |
| 9am–10am | 88.4% | 1.6% | 245 |
| 10am–11am | 89.7% | 1.3% | 149 |
| 11am–12pm | 88.9% | 0.6% | 336 |
| 12pm–1pm | 91.2% | 0.0% | 204 |
| 1pm–2pm | 86.7% | 0.6% | 174 |
| 2pm–3pm | 82.6% | 0.5% | 635 |
| 3pm–4pm | 70.7% | 0.3% | 325 |
| 4pm–5pm | 77.5% | 0.0% | 147 |
| 5pm–6pm | 70.8% | 0.0% | 185 |
| 6pm–7pm | 78.2% | 0.7% | 570 |
| 7pm–8pm | 71.2% | 0.0% | 318 |
| 8pm–9pm | 63.4% | 0.0% | 222 |
| 9pm–10pm | 70.4% | 0.0% | 98 |
| 10pm–11pm | Limited data | 16 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SAT to PHX
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) | 92.8% | +8.1 pts | 0.0% | 111 |
| Christmas & New Year (Dec 20 - Jan 3) | 85.2% | +0.5 pts | 0.0% | 244 |
| Summer peak (Jun 15 - Aug 15) | 75.6% | -9.1 pts | 0.4% | 781 |
| All other days | 84.7% | — | 0.6% | 4,017 |
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).