Phoenix (PHX) to San Antonio (SAT): On-Time Performance
Data through July 2026
Phoenix (PHX) to San Antonio (SAT) effectively runs on two schedules. In September 2024, 91% of arrivals were on time; in July 2025 that fell to 68% — a 23-point seasonal swing. Across the full period the route averages 79% on-time against a national 78%. Morning departures also hold up better than evening ones (89% vs 69%), which matters most in the rough months.
- On-time
- 79%
- arrived <15 min late
- Avg delay
- 15 min
- completed flights
- Cancelled
- 0.4%
- Flights/day
- 6.9
- last 12 months
- Duration
- 2h 9m
- scheduled
- Distance
- 843 mi
Best airline from PHX to SAT
5 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Frontier Airlinesmost reliable | 91% | 4 min | 0.0% | 65 |
| SkyWest Airlines | 87% | 8 min | 0.0% | 126 |
| American Airlines | 79% | 19 min | 0.6% | 2,110 |
| Southwest Airlines | 78% | 12 min | 0.4% | 2,999 |
| Envoy Air | 78% | 11 min | 0.0% | 77 |
Monthly on-time trend
Best time to fly from PHX to SAT
Aim for departures around 5 a.m. (97% on-time); avoid 7 p.m. departures (66%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 77% | 18 min |
| Tuesdaybest | 85% | 12 min |
| Wednesday | 83% | 12 min |
| Thursday | 74% | 17 min |
| Friday | 76% | 16 min |
| Saturday | 81% | 12 min |
| Sunday | 78% | 14 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft59%
- Airline operations33%
- National airspace system6%
- Weather2%
Frequently asked questions
- How often are flights from PHX to SAT delayed?
- 21% of PHX–SAT 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 15 minutes.
- Which airline is most reliable from PHX to SAT?
- Frontier Airlines has the best on-time record on this route at 91%, based on 65 flights. 5 airlines flew PHX–SAT frequently enough to compare in this period.
- What is the best time of day to fly from PHX to SAT?
- Departures around 5 a.m. have the best record (97% on-time), while departures around 7 p.m. have the worst (66%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from PHX to SAT?
- The scheduled PHX–SAT flight time averages 2h 9m over 843 miles. Actual arrival times vary — flights on this route land 15+ minutes late 21% of the time.
- How often are PHX to SAT flights cancelled?
- 0.4% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from PHX to SAT?
- July 2025 was the roughest month in this dataset, with only 68% of arrivals on time. The best was September 2024 at 91%. If your dates are flexible, that 23-point gap is worth planning around.
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Based on 5,377 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.