Best Time to Fly PHL to SAT: On-Time Stats by Hour & Airline
Philadelphia International → San Antonio International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 69.6% of Philadelphia (PHL) to San Antonio (SAT) flights arrived on time (266 scheduled flights). That is 8.0 points below the national average of 77.6%.
American Airlines was the only reporting airline with regular flights on this route.
October has been the best month (89% on time) and Saturday the weakest day of the week (68%).
2.3% of flights were cancelled, versus 1.8% nationally.
PHL to SAT 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 |
|---|---|---|---|---|
| American Airlines | 69.6% | 80 min | 2.3% | 266 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly PHL to SAT
On-time arrival % by scheduled departure hour (local time), 419 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 8am–9am | 80.0% | 5.8% | 69 |
| 9am–10am | 86.0% | 0.0% | 114 |
| 10am–11am | 90.3% | 0.0% | 31 |
| 11am–12pm | Limited data | 2 | |
| 5pm–6pm | 67.0% | 3.5% | 116 |
| 6pm–7pm | 62.4% | 2.3% | 87 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on PHL to SAT
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Summer peak (Jun 15 - Aug 15) | 75.5% | +1.1 pts | 3.6% | 165 |
| All other days | 74.4% | — | 1.6% | 254 |
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).