Miami (MIA) to Philadelphia (PHL): On-Time Performance
Data through July 2026
The calendar drives reliability on MIA–PHL. October 2024 flights landed on schedule 87% of the time, but August 2024 dropped to 58% — a gap of 29 points. Across the full period the route averages 75% on-time against a national 78%. Morning departures also hold up better than evening ones (88% vs 69%), which matters most in the rough months.
- On-time
- 75%
- arrived <15 min late
- Avg delay
- 21 min
- completed flights
- Cancelled
- 2.3%
- Flights/day
- 8.9
- last 12 months
- Duration
- 2h 53m
- scheduled
- Distance
- 1,013 mi
Best airline from MIA to PHL
3 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| American Airlinesmost reliable | 76% | 20 min | 2.2% | 5,347 |
| Frontier Airlines | 74% | 27 min | 2.3% | 768 |
| Spirit Airlines | 73% | 20 min | 3.8% | 525 |
Monthly on-time trend
Best time to fly from MIA to PHL
Aim for departures around 5 a.m. (92% on-time); avoid 10 p.m. departures (65%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 73% | 23 min |
| Tuesday | 78% | 18 min |
| Wednesdaybest | 79% | 16 min |
| Thursday | 76% | 19 min |
| Friday | 77% | 18 min |
| Saturday | 77% | 22 min |
| Sunday | 70% | 27 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft42%
- Airline operations37%
- National airspace system16%
- Weather5%
Frequently asked questions
- How often are flights from MIA to PHL delayed?
- 25% of MIA–PHL flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 21 minutes.
- Which airline is most reliable from MIA to PHL?
- American Airlines has the best on-time record on this route at 76%, based on 5,347 flights. 3 airlines flew MIA–PHL frequently enough to compare in this period.
- What is the best time of day to fly from MIA to PHL?
- Departures around 5 a.m. have the best record (92% on-time), while departures around 10 p.m. have the worst (65%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from MIA to PHL?
- The scheduled MIA–PHL flight time averages 2h 53m over 1,013 miles. Actual arrival times vary — flights on this route land 15+ minutes late 25% of the time.
- How often are MIA to PHL flights cancelled?
- 2.3% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, slightly above the national rate of 1.6%.
- What is the worst month to fly from MIA to PHL?
- August 2024 was the roughest month in this dataset, with only 58% of arrivals on time. The best was October 2024 at 87%. If your dates are flexible, that 29-point gap is worth planning around.
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Based on 6,640 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.