San Antonio (SAT) to Philadelphia (PHL): On-Time Performance
Data through July 2026
San Antonio (SAT) to Philadelphia (PHL) is a thinner route than most in this dataset — 266 departures over the past year, roughly 5 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 76% arrived on time.
- On-time
- 76%
- arrived <15 min late
- Avg delay
- 21 min
- completed flights
- Cancelled
- 2.9%
- Flights/day
- 0.73
- last 12 months
- Duration
- 3h 40m
- scheduled
- Distance
- 1,496 mi
Monthly on-time trend
Best time to fly from SAT to PHL
Aim for departures around 7 a.m. (87% on-time); avoid 12 p.m. departures (58%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 68% | 26 min |
| Tuesday | 78% | 16 min |
| Wednesdaybest | 84% | 15 min |
| Thursday | 79% | 37 min |
| Friday | 66% | 16 min |
| Saturday | 80% | 16 min |
| Sunday | 77% | 16 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft30%
- Airline operations44%
- National airspace system20%
- Weather6%
- Security1%
Frequently asked questions
- How often are flights from SAT to PHL delayed?
- 24% of SAT–PHL flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 21 minutes.
- What is the best time of day to fly from SAT to PHL?
- Departures around 7 a.m. have the best record (87% on-time), while departures around 12 p.m. have the worst (58%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from SAT to PHL?
- The scheduled SAT–PHL flight time averages 3h 40m over 1,496 miles. Actual arrival times vary — flights on this route land 15+ minutes late 24% of the time.
- How often are SAT to PHL flights cancelled?
- 2.9% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, slightly above the national rate of 1.6%.
- What is the worst month to fly from SAT to PHL?
- July 2024 was the roughest month in this dataset, with only 52% of arrivals on time. The best was August 2025 at 93%. If your dates are flexible, that 41-point gap is worth planning around.
Explore related pages
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Related guides
Based on 450 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.