Miami (MIA) to Phoenix (PHX): On-Time Performance
Data through May 2026
When you fly MIA to PHX matters as much as anything else about the booking: the route swung from 89% on-time in November 2024 to just 62% in August 2025. Across the full period the route averages 78% on-time against a national 78%. Morning departures also hold up better than evening ones (85% vs 74%), which matters most in the rough months.
- On-time
- 78%
- arrived <15 min late
- Avg delay
- 16 min
- completed flights
- Cancelled
- 0.8%
- Flights/day
- 5.0
- last 12 months
- Duration
- 5h 4m
- scheduled
- Distance
- 1,972 mi
Monthly on-time trend
Best time to fly from MIA to PHX
Aim for departures around 7 a.m. (89% on-time); avoid 8 p.m. departures (70%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 78% | 16 min |
| Tuesday | 80% | 14 min |
| Wednesdaybest | 80% | 15 min |
| Thursday | 78% | 15 min |
| Friday | 80% | 16 min |
| Saturday | 78% | 18 min |
| Sunday | 74% | 20 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft40%
- Airline operations39%
- National airspace system15%
- Weather6%
Frequently asked questions
- How often are flights from MIA to PHX delayed?
- 22% of MIA–PHX flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 16 minutes.
- What is the best time of day to fly from MIA to PHX?
- Departures around 7 a.m. have the best record (89% on-time), while departures around 8 p.m. have the worst (70%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from MIA to PHX?
- The scheduled MIA–PHX flight time averages 5h 4m over 1,972 miles. Actual arrival times vary — flights on this route land 15+ minutes late 22% of the time.
- How often are MIA to PHX flights cancelled?
- 0.8% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from MIA to PHX?
- August 2025 was the roughest month in this dataset, with only 62% of arrivals on time. The best was November 2024 at 89%. If your dates are flexible, that 28-point gap is worth planning around.
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Based on 3,669 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.