PHL to MIA flight delays
Philadelphia, PA (PHL) Miami, FL (MIA) · 1,013 miles
3,158 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
77.21%
Arrived on time
Within 15 minutes of schedule
2.06%
Cancelled
Share of scheduled flights
84 min
When late, late by
Average across delayed arrivals
20 min
Delay per flight
Averaged over every flight flown
What the record says about this route
Which airline you fly changes the odds here. American Airlines arrived on time 12.2 points more often than Frontier Airlines over the same period on the same route — same airports, same weather, same air traffic control. A gap that survives all of that is about how the two airlines are run.
The season swings this route hard. In May it ran 26.1 points more punctual than in July — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
The Philadelphia to Miami route sits close to the middle of the record — neither notably punctual nor notably late.
Which airline should you fly on this route?
Over January 2025 – August 2026, American Airlines arrived on time most often on PHL to MIA. Frontier Airlines was late most often. Flights ran closest to schedule in May and worst in July.
Every airline on PHL to MIA
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| American Airlines | 2,569 | 78.77% | 1.99% | 87 min | C |
| Frontier Airlines | 354 | 66.57% | 1.98% | 83 min | F |
| Spirit Airlines | 235 | 76.21% | 2.98% | 55 min | D |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
MIA to PHL Miami back to Philadelphia 75.76% on time DOther routes from Philadelphia
Common questions
Are flights from Philadelphia to Miami usually delayed?
77.21% of flights on the PHL to MIA route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is about the same as the average route in this record.
Which airline is most on time from Philadelphia to Miami?
American Airlines, at 78.77% on time across 2,569 flights. The least punctual on the route was Frontier Airlines at 66.57%.
How often are PHL to MIA flights cancelled?
2.06% of scheduled flights did not operate — about 21 in every thousand. That is in the normal range.
What is the best month to fly Philadelphia to Miami?
May, when 84.8% of flights arrived on time. The worst was July at 58.7%.
When PHL to MIA flights are late, how late are they?
About 84 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on PHL to MIA during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →