San Jose (SJC) to Phoenix (PHX): On-Time Performance
Data through July 2026
San Jose (SJC) to Phoenix (PHX) effectively runs on two schedules. In September 2024, 91% of arrivals were on time; in June 2026 that fell to 71% — a 20-point seasonal swing. Across the full period the route averages 84% on-time against a national 78%. Morning departures also hold up better than evening ones (93% vs 75%), which matters most in the rough months.
- On-time
- 84%
- arrived <15 min late
- Avg delay
- 11 min
- completed flights
- Cancelled
- 0.5%
- Flights/day
- 8.3
- last 12 months
- Duration
- 1h 55m
- scheduled
- Distance
- 621 mi
Best airline from SJC to PHX
5 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Envoy Airmost reliable | 90% | 6 min | 0.6% | 469 |
| American Airlines | 88% | 14 min | 0.5% | 1,091 |
| SkyWest Airlines | 86% | 14 min | 0.5% | 887 |
| Frontier Airlines | 83% | 15 min | 0.5% | 188 |
| Southwest Airlines | 82% | 10 min | 0.4% | 3,947 |
Monthly on-time trend
Best time to fly from SJC to PHX
Aim for departures around 7 a.m. (95% on-time); avoid 9 p.m. departures (61%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 82% | 12 min |
| Tuesdaybest | 89% | 6 min |
| Wednesday | 87% | 9 min |
| Thursday | 81% | 12 min |
| Friday | 82% | 14 min |
| Saturday | 88% | 9 min |
| Sunday | 82% | 13 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft57%
- Airline operations33%
- National airspace system8%
- Weather2%
Frequently asked questions
- How often are flights from SJC to PHX delayed?
- 16% of SJC–PHX 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 11 minutes.
- Which airline is most reliable from SJC to PHX?
- Envoy Air has the best on-time record on this route at 90%, based on 469 flights. 5 airlines flew SJC–PHX frequently enough to compare in this period.
- What is the best time of day to fly from SJC to PHX?
- Departures around 7 a.m. have the best record (95% on-time), while departures around 9 p.m. have the worst (61%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from SJC to PHX?
- The scheduled SJC–PHX flight time averages 1h 55m over 621 miles. Actual arrival times vary — flights on this route land 15+ minutes late 16% of the time.
- How often are SJC to PHX flights cancelled?
- 0.5% 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 SJC to PHX?
- June 2026 was the roughest month in this dataset, with only 71% of arrivals on time. The best was September 2024 at 91%. If your dates are flexible, that 20-point gap is worth planning around.
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Based on 6,582 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.