Best Time to Fly MIA to PHX: On-Time Stats by Hour & Airline
Miami International → Phoenix Sky Harbor International
Data through July 2026 · Last updated October 18, 2026
1,834 flights were scheduled from Miami (MIA) to Phoenix (PHX) in the last 12 months, and 78.3% of those that flew arrived on time, 0.7 points above the US average of 77.6%.
American Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Wednesday was the most reliable day (82% on time) and August the worst month (62%).
The cancellation rate was 0.8% (US average 1.8%).
MIA to PHX 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 |
|---|---|---|---|---|
| American Airlines | 78.3% | 68 min | 0.8% | 1,834 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MIA to PHX
On-time arrival % by scheduled departure hour (local time), 3,698 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 89.6% | 0.6% | 730 |
| 8am–9am | 85.5% | 0.0% | 55 |
| 9am–10am | 88.6% | 0.0% | 79 |
| 10am–11am | 82.0% | 0.0% | 256 |
| 11am–12pm | 73.9% | 0.6% | 157 |
| 12pm–1pm | Limited data | 2 | |
| 1pm–2pm | 74.5% | 0.7% | 465 |
| 2pm–3pm | 82.5% | 0.0% | 103 |
| 3pm–4pm | Limited data | 6 | |
| 4pm–5pm | 81.8% | 0.0% | 44 |
| 5pm–6pm | 74.2% | 0.6% | 665 |
| 6pm–7pm | Limited data | 1 | |
| 7pm–8pm | 76.5% | 1.9% | 432 |
| 8pm–9pm | 70.4% | 0.4% | 268 |
| 9pm–10pm | 78.0% | 1.1% | 368 |
| 10pm–11pm | 80.3% | 1.5% | 67 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on MIA to PHX
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) | 72.6% | -8.7 pts | 0.0% | 73 |
| Christmas & New Year (Dec 20 - Jan 3) | 80.0% | -1.3 pts | 0.0% | 170 |
| Summer peak (Jun 15 - Aug 15) | 69.6% | -11.7 pts | 1.3% | 597 |
| All other days | 81.3% | — | 0.6% | 2,858 |
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).