Philadelphia (PHL) to San Antonio (SAT): On-Time Performance
Data through May 2026
Philadelphia (PHL) to San Antonio (SAT) is a thinner route than most in this dataset — 210 departures over the past year, roughly 4 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 75% arrived on time.
- On-time
- 75%
- arrived <15 min late
- Avg delay
- 19 min
- completed flights
- Cancelled
- 2.5%
- Flights/day
- 0.58
- last 12 months
- Duration
- 3h 56m
- scheduled
- Distance
- 1,496 mi
Monthly on-time trend
Best time to fly from PHL to SAT
Aim for departures around 9 a.m. (85% on-time); avoid 6 p.m. departures (62%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Mondaybest | 84% | 12 min |
| Tuesday | 82% | 17 min |
| Wednesday | 79% | 14 min |
| Thursday | 74% | 26 min |
| Friday | 67% | 25 min |
| Saturday | 75% | 24 min |
| Sunday | 69% | 15 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft46%
- Airline operations40%
- National airspace system13%
- Weather2%
Frequently asked questions
- How often are flights from PHL to SAT delayed?
- 25% of PHL–SAT flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 19 minutes.
- What is the best time of day to fly from PHL to SAT?
- Departures around 9 a.m. have the best record (85% on-time), while departures around 6 p.m. have the worst (62%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from PHL to SAT?
- The scheduled PHL–SAT flight time averages 3h 56m over 1,496 miles. Actual arrival times vary — flights on this route land 15+ minutes late 25% of the time.
- How often are PHL to SAT flights cancelled?
- 2.5% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, slightly above the national rate of 1.6%.
- What is the worst month to fly from PHL to SAT?
- August 2025 was the roughest month in this dataset, with only 48% of arrivals on time. The best was October 2024 at 100%. If your dates are flexible, that 52-point gap is worth planning around.
Explore related pages
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Based on 363 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.