Philadelphia (PHL) to Miami (MIA): On-Time Performance
Data through May 2026
When you fly PHL to MIA matters as much as anything else about the booking: the route swung from 91% on-time in November 2024 to just 57% in August 2024. Across the full period the route averages 76% on-time against a national 78%. Morning departures also hold up better than evening ones (82% vs 67%), which matters most in the rough months.
- On-time
- 76%
- arrived <15 min late
- Avg delay
- 20 min
- completed flights
- Cancelled
- 2.1%
- Flights/day
- 8.5
- last 12 months
- Duration
- 2h 59m
- scheduled
- Distance
- 1,013 mi
Best airline from PHL to MIA
3 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| American Airlinesmost reliable | 78% | 19 min | 2.0% | 4,988 |
| Spirit Airlines | 76% | 17 min | 2.9% | 556 |
| Frontier Airlines | 67% | 30 min | 2.0% | 740 |
Monthly on-time trend
Best time to fly from PHL to MIA
Aim for departures around 5 a.m. (92% on-time); avoid 5 p.m. departures (60%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 75% | 25 min |
| Tuesdaybest | 83% | 17 min |
| Wednesday | 81% | 15 min |
| Thursday | 75% | 19 min |
| Friday | 76% | 18 min |
| Saturday | 75% | 22 min |
| Sunday | 71% | 24 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft37%
- Airline operations35%
- National airspace system24%
- Weather4%
Frequently asked questions
- How often are flights from PHL to MIA delayed?
- 24% of PHL–MIA 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 20 minutes.
- Which airline is most reliable from PHL to MIA?
- American Airlines has the best on-time record on this route at 78%, based on 4,988 flights. 3 airlines flew PHL–MIA frequently enough to compare in this period.
- What is the best time of day to fly from PHL to MIA?
- Departures around 5 a.m. have the best record (92% on-time), while departures around 5 p.m. have the worst (60%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from PHL to MIA?
- The scheduled PHL–MIA flight time averages 2h 59m over 1,013 miles. Actual arrival times vary — flights on this route land 15+ minutes late 24% of the time.
- How often are PHL to MIA flights cancelled?
- 2.1% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, slightly above the national rate of 1.6%.
- What is the worst month to fly from PHL to MIA?
- August 2024 was the roughest month in this dataset, with only 57% of arrivals on time. The best was November 2024 at 91%. If your dates are flexible, that 34-point gap is worth planning around.
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Based on 6,284 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.