Best Time to Fly PHL to MIA: On-Time Stats by Hour & Airline
Philadelphia International → Miami International
Data through July 2026 · Last updated October 18, 2026
3,247 flights were scheduled from Philadelphia (PHL) to Miami (MIA) in the last 12 months, and 77.4% of those that flew arrived on time, in line with the US average of 77.6%.
American Airlines was the most punctual of the 3 airlines on the route at 78.9%, while Frontier Airlines trailed at 66.4%.
November has been the best month (86% on time) and Sunday the weakest day of the week (72%).
2.4% of flights were cancelled, versus 1.8% nationally.
PHL to MIA 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 | 78.9% | 80 min | 2.3% | 2,663 |
| Spirit Airlines | 76.5% | 55 min | 3.2% | 221 |
| Frontier Airlines | 66.4% | 82 min | 2.5% | 363 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly PHL to MIA
On-time arrival % by scheduled departure hour (local time), 6,395 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 91.9% | 3.1% | 513 |
| 6am–7am | 85.2% | 2.7% | 711 |
| 7am–8am | 80.5% | 2.2% | 89 |
| 8am–9am | 81.0% | 1.5% | 784 |
| 9am–10am | 77.1% | 4.6% | 151 |
| 10am–11am | 79.2% | 1.8% | 677 |
| 11am–12pm | 67.3% | 1.5% | 274 |
| 12pm–1pm | 75.7% | 0.0% | 149 |
| 1pm–2pm | 74.7% | 0.8% | 499 |
| 2pm–3pm | 65.7% | 0.7% | 141 |
| 3pm–4pm | 73.6% | 1.0% | 521 |
| 4pm–5pm | 78.5% | 1.7% | 233 |
| 5pm–6pm | 58.8% | 2.2% | 501 |
| 6pm–7pm | 68.2% | 3.3% | 637 |
| 7pm–8pm | 75.5% | 3.1% | 223 |
| 8pm–9pm | 73.0% | 2.3% | 129 |
| 9pm–10pm | 67.9% | 6.8% | 117 |
| 10pm–11pm | 88.9% | 2.2% | 46 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on PHL to MIA
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) | 85.0% | +6.0 pts | 0.0% | 120 |
| Christmas & New Year (Dec 20 - Jan 3) | 71.1% | -7.9 pts | 2.4% | 295 |
| Summer peak (Jun 15 - Aug 15) | 63.5% | -15.5 pts | 3.7% | 1,055 |
| All other days | 79.0% | — | 1.9% | 4,925 |
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).