Flight profile · Frontier Airlines
F91016
Philadelphia (PHL) to San Juan (SJU) · scheduled 6:00 AM – 9:54 AM
How F91016 performs
682 operations, May 2024 – June 2026.
F91016 arrived on time 66.2% of the time, against 63.5% for all PHL → SJU flights, so this departure is 2.7 percentage points better than the route as a whole. Against Frontier Airlines’ own flights on this route it is 9.2 points better.
Source: US DOT Bureau of Transportation Statistics · 682 operations, May 2024 – June 2026 · If F91016 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
Where F91016 is right now
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Against the rest of the route
| Flight or route | On time | Cancelled | Median delay | Severe | Flights |
|---|---|---|---|---|---|
| F91016 | 66.2% | 2.35% | 3 min | 9.0% | 682 |
| Frontier Airlines on PHL → SJU | 57.0% | 2.72% | 8 min | 15.6% | 2,462 |
| All PHL → SJU flights | 63.5% | 2.25% | 3 min | 13.4% | 5,119 |
Source: FlyerIntel analysis of US DOT BTS data · May 2024 – June 2026
Why F91016 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding and fueling, all within the carrier’s control
airspace and airport capacity, including weather-driven flow control
the inbound aircraft was late, so this flight started late
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for F91016 on PHL → SJU. Only delays of 15 minutes or more are attributed.
Source: US DOT Bureau of Transportation Statistics · Data covering May 2024 – June 2026
Does a late aircraft delay this flight?
How often the plane that flies F91016 comes in late, and what that does to the departure.
When the aircraft came in 15 or more minutes late, F91016 pushed back an average of 15 minutes late; when it came in on time or early, an average of 6 minutes late.
Each departure is matched to the flight the same aircraft flew into PHL just before it, using the tail number in the DOT file, 544 of 667 departures in all. A departure is left out when that flight is unknown, was cancelled or diverted, or the aircraft had sat for more than 12 hours. A flight the airline cancelled never left and is not in the count, and one flown by a substitute aircraft is matched to the aircraft that flew it, not to the one first planned.
Against the network at the same turn length
| Share of departures | Inbound landed 15+ late | Left 15+ late after a late inbound | Left 15+ late after an on-time inbound |
|---|---|---|---|
| F91016 | 35% | 27% | 14% |
| Network, same turn | 33% | 24% | 11% |
The schedule leaves a long gap on the ground, which gives a late aircraft room to catch up before this flight pushes back.
The network row is every flight with a scheduled turn of 3 to 6 hours. How often F91016’s aircraft landed 15 or more minutes late is about the same as the network’s and, once the aircraft was late, how often F91016 left 15 or more minutes late is about the same as the network’s.
More: Which Flight Numbers Pay for a Late Aircraft lists the flight numbers that pass a late aircraft on.
Source: US DOT Bureau of Transportation Statistics · Data covering May 2024 – June 2026
From pushback to gate
When it leaves PHL late, does that still matter by the time it reaches SJU?
F91016 pushes back an average of 10.4 minutes late and arrives a further 3.0 minutes behind that. This departure loses ground between the two gates rather than recovering it, so a late pushback here tends to get worse on the way, not better. It spends 22.6 minutes on the taxiways at PHL, 4.8 minutes longer than a typical PHL departure in the same hour.
On arrival at SJU, F91016 spends 8.8 min taxiing from touchdown to the gate — ground time a connecting passenger sits through before they can even leave the aircraft, on top of however late the flight itself ran. That is 2.7 minutes longer than a typical SJU arrival (6.2 min).
Departure delay is averaged over every pushback and arrival delay over every completed arrival, so the two counts differ by the flights that never reached SJU. Taxi-out is gate to wheels up and sits inside the scheduled block rather than on top of it; the comparison is 19,016 departures from PHL scheduled in the clock hour F91016 most often leaves in. Taxi-in is landing to gate, compared against every arrival FlyerIntel has on file at SJU (109,607 flights), not just F91016’s own. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · May 2024 – June 2026
The hour it leaves PHL
Part of any flight’s record belongs to the clock rather than to the flight. F91016 has one departure time, so this is what that time is worth.
On-time arrival rate. 19,016 departures from PHL are scheduled in the 6 AM–7 AM hour over the period, against 305,181 across the whole day.
F91016 is scheduled out of PHL at 6:00 AM, in the 6 AM–7 AM bank. Departures from PHL in that hour arrive on time 87.0% of the time against 76.2% across the airport’s whole day — the slot alone is worth 10.8 points better before anything about this particular flight is considered.
The two airport figures cover every departure from PHL to every destination, so they describe the slot rather than this journey — the like-for-like comparison against the route is above. Hours are scheduled local, and a number whose schedule moved between banks inside the period has no single hour and is not described here at all. Why the hour matters.
Source: FlyerIntel analysis of US DOT BTS data · May 2024 – June 2026 · Hours below 120 departures are not scored.
Other routes F91016 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| OMA→MCO Omaha to Orlando | March 8–20, 2024 | 8 | — |
| ATL→MCO Atlanta to Orlando | July 5, 2023 – November 26, 2023 | 48 | — |
Because the same number has served different journeys, the statistics above describe only the route F91016 currently operates. Blending them would produce an average of two different flights.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
53 min late
against a median of 3 min late
Percentiles over 682 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering May 2024 – June 2026
Other flights on this route
Same airports, same journey, different odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| F91016 this flight | Frontier Airlines | 66.2% | 3 min late | 682 |
| F94462 | Frontier Airlines | 54.2% | 10 min late | 742 |
Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. F91016 is placed in the same ordering rather than left out of it; the rows around it are the most punctual departures on the route, not all of them, so this is a comparison and not a rank. Schedules change; confirm the departure still operates before booking around this.
Data and methodology
Calculated by FlyerIntel from 682 records of F91016 operating PHL → SJU, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.
Full methodology · Data sources · Report a problem
Related research: Most and Least Reliable Flight Numbers · The Delay You Inherit · Making Up Time in the Air
Analysis last recomputed