San Antonio (SAT) to Philadelphia (PHL): On-Time Performance
Data through May 2026
San Antonio (SAT) to Philadelphia (PHL) is a thinner route than most in this dataset — 211 departures over the past year, roughly 4 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 74% arrived on time.
- On-time
- 74%
- arrived <15 min late
- Avg delay
- 21 min
- completed flights
- Cancelled
- 2.5%
- Flights/day
- 0.58
- last 12 months
- Duration
- 3h 39m
- 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 | 72% | 24 min |
| Tuesday | 76% | 17 min |
| Wednesday | 81% | 15 min |
| Thursday | 77% | 35 min |
| Friday | 63% | 18 min |
| Saturdaybest | 83% | 11 min |
| Sunday | 69% | 23 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft31%
- Airline operations48%
- National airspace system20%
- Weather1%
Frequently asked questions
- How often are flights from SAT to PHL delayed?
- 26% of SAT–PHL 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 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 39m over 1,496 miles. Actual arrival times vary — flights on this route land 15+ minutes late 26% of the time.
- How often are SAT to PHL 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 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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Based on 364 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.