SAT to PHL flight delays & on-time performance
Nonstop flights from San Antonio International Airport to Philadelphia International Airport · 1,496 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SAT or PHL right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from San Antonio (SAT) to Philadelphia (PHL) arrived on time 83% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 2.3% were cancelled, and 9% arrived an hour or more late.
- American Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 8am did best (96% on time); around 1pm did worst (59%).
- Sunday was the most reliable day to fly (89% on time) and Monday the least (68%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (56%).
Which airline is most on time from SAT to PHL?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| American Airlines | 83% | 2.3% | 20 min | 8.8% | 266 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 7am87%172 flights
- 8am96%29 flights
- 1pm59%30 flights
- 2pm69%30 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday68%2.6% cancelled
- Tuesday88%3.0% cancelled
- Wednesday88%2.9% cancelled
- Thursday88%0.0% cancelled
- Friday78%2.4% cancelled
- Saturday82%0.0% cancelled
- Sunday89%5.3% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)56%
- Late-arriving aircraft21%
- Air traffic control & airport congestion12%
- Extreme weather9%
- Security2%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather83%
- Air traffic control & airport congestion17%
- Airline (crew, maintenance, cleaning, fueling)0%
- Security0%
SAT to PHL: common questions
- How often are SAT to PHL flights on time?
- 83% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from San Antonio to Philadelphia cancelled?
- 2.3% of scheduled flights were cancelled (6 of 266).
- How long are typical delays?
- Across all flights the average arrival delay was 20 min (early arrivals count as zero). Flights that were late arrived 112 min behind schedule on average, and 8.8% of flights were an hour or more late.
- How long is taxi time at SAT?
- Flights on this route spent 14 min taxiing from the gate to takeoff on average.
Related routes
Return trip: PHL to SAT — 70% on time
More flights from San Antonio
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SAT → PHL, nonstop flights by US airlines that report to the DOT. How we calculate this.