Best Time to Fly PHX to SAN: On-Time Stats by Hour & Airline
Phoenix Sky Harbor International → San Diego International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 71.7% of Phoenix (PHX) to San Diego (SAN) flights arrived on time (6,002 scheduled flights). That is 5.9 points below the national average of 77.6%.
Alaska Airlines was the most punctual of the 5 airlines on the route at 85.5%, while SkyWest Airlines trailed at 67.5%.
January has been the best month (83% on time) and Friday the weakest day of the week (68%).
1.3% of flights were cancelled, versus 1.8% nationally.
PHX to SAN on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Alaska Airlines | 85.5% | 56 min | 2.3% | 218 |
| Frontier Airlines | 74.5% | 83 min | 0.5% | 389 |
| American Airlines | 73.3% | 66 min | 0.8% | 1,668 |
| Southwest Airlines | 70.3% | 49 min | 1.0% | 3,219 |
| SkyWest Airlines | 67.5% | 52 min | 5.3% | 508 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly PHX to SAN
On-time arrival % by scheduled departure hour (local time), 11,559 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 12am–1am | Limited data | 1 | |
| 5am–6am | Limited data | 27 | |
| 6am–7am | 90.9% | 1.9% | 524 |
| 7am–8am | 87.8% | 0.5% | 1,167 |
| 8am–9am | 86.6% | 0.7% | 910 |
| 9am–10am | 81.9% | 0.2% | 415 |
| 10am–11am | 75.5% | 1.3% | 941 |
| 11am–12pm | 75.0% | 0.8% | 768 |
| 12pm–1pm | 77.1% | 0.8% | 488 |
| 1pm–2pm | 76.0% | 0.4% | 518 |
| 2pm–3pm | 71.5% | 0.7% | 992 |
| 3pm–4pm | 74.9% | 0.8% | 708 |
| 4pm–5pm | 66.5% | 0.7% | 551 |
| 5pm–6pm | 71.7% | 1.1% | 748 |
| 6pm–7pm | 64.5% | 2.5% | 890 |
| 7pm–8pm | 58.7% | 2.1% | 425 |
| 8pm–9pm | 66.9% | 0.8% | 860 |
| 9pm–10pm | 63.5% | 1.1% | 475 |
| 10pm–11pm | 53.6% | 3.5% | 143 |
| 11pm–12am | Limited data | 8 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on PHX to SAN
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 71.6% | -5.5 pts | 0.0% | 201 |
| Christmas & New Year (Dec 20 - Jan 3) | 59.9% | -17.3 pts | 2.5% | 441 |
| Summer peak (Jun 15 - Aug 15) | 67.6% | -9.5 pts | 1.0% | 1,989 |
| All other days | 77.1% | — | 1.0% | 8,928 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).