Flight number record
F9 1016
Frontier Airlines · Philadelphia to San Juan
- Route
- PHL → SJU
- Departs
- 06:00
- Flights
- 254
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s F9 1016, check with Frontier Airlines.
F9 1016 draws a C−. About one flight in three arrives at least 15 minutes late, and the typical late arrival is about an hour behind schedule. Build slack into anything you connect to. That rests on 254 flights, with a median arrival 2 minutes late.
The national on-time rate over the same period is 77.3%, so F9 1016 runs 11 points behind the country as a whole. Across a thousand flights that is about 112 extra late arrivals.
Key figures
On time
66.1%
Arrivals under 15 minutes late, of 245 completed flights
Avg delay
67 min
Across delayed arrivals only, not all flights
Cancelled
3.15%
National rate is 1.89%
1 hour+ late
12.7%
National rate is 8.3%
These figures cover 254 flights between September 2025 and August 2026. Beyond the headline rate, 12.7% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When F9 1016 flies
F9 1016 flies PHL to SJU without a single fixed slot. Its most common scheduled departure was 06:00, used on 69 of 254 flights, with 11:46 (35 flights) next.
- Departs 06:0069 flights27.2%
- Departs 11:4635 flights13.8%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 06:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and F9 1016 runs 23 points worse at 66.1%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
F9 1016 next to PHL to SJU
Every carrier on PHL to SJU combined arrived on time 63.3% of the time across 1,992 flights, so F9 1016 is 3 points ahead of it. Frontier flew 915 flights on the same city pair under all its flight numbers, including this one, and those ran 55.6% on time. Across its whole network Frontier Airlines managed 72.7%, which this flight trails by 7 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| F9 1016thin sample | 254 | 66.1% | 67 min | 3.15% | C− |
| All Frontier Airlines on PHL–SJU | 915 | 55.6% | 77 min | 3.17% | D− |
| All carriers on PHL–SJU | 1,992 | 63.3% | 78 min | 3.36% | D− |
| Frontier Airlines, whole network | 213,022 | 72.7% | 84 min | 2.05% | C |
Across the year
F9 1016 quarter by quarter
F9 1016 did not run the same all year. Its best quarter was Apr–Jun 2026 at 80.3% on time and its weakest Jan–Mar 2026 at 50.7%, a swing of 30 points on roughly 85 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Jul–Sep 202528 flights—
- Oct–Dec 202581 flights70.0%
- Jan–Mar 202671 flights50.7%
- Apr–Jun 202669 flights80.3%
- Jul–Sep 20265 flights—
Scale runs 40% to 85%. Rows with fewer than 30 flights show a dash.
By weekday, F9 1016 did best on Friday at 76.9% on time and worst on Monday at 53.8%. Each day rests on about 36 flights, so a gap of 23 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late F9 1016 runs when it is late
The 83 late arrivals split 24 under half an hour, 28 between 30 and 60 minutes, and 31 an hour or more.
- 15+ min early42 flights17.1%
- Within 15 min120 flights49.0%
- 15–29 min late24 flights9.8%
- 30–59 min late28 flights11.4%
- 1–2 hours late23 flights9.4%
- 2+ hours late8 flights3.3%
Scale runs 0% to 100%.
Share of 245 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 52 departures that left 15 minutes late or more, only 6 made it up before arrival. In the other direction, 37 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at SJU.
The worst days
Worst days for F9 1016
The latest arrival of the period was on 9 April 2026, 9 hours 51 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The five worst days are spread across April, May, February and March, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 9 April 2026 | 9 hours 51 minutes | Late-arriving aircraft |
| 7 April 2026 | 6 hours 17 minutes | Late-arriving aircraft |
| 27 May 2026 | 5 hours 32 minutes | Carrier |
| 9 February 2026 | 3 hours 2 minutes | Extreme weather |
| 27 March 2026 | 2 hours 50 minutes | Carrier |
Delay causes
Why F9 1016 runs late
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 5,530 reported delay minutes.
- 38%Carrier
- 33%National Airspace System
- 20%Late-arriving aircraft
- 9%Extreme weather
The largest share of delay minutes, 38%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,118 of the 5,530 delay minutes reported here. The split is drawn from 5,530 delay minutes reported on F9 1016.
Cancellations run at 3.15%, against 1.89% nationally. That is about one flight in 30 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and routes
What a delay on this flight costs
12.7% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
At 1,576 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.
Every one of the 254 flights under F9 1016 in the data flew PHL to SJU. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 254 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking F9 1016
For a booking, the cancellation rate is the figure to plan around on F9 1016: 3.15% of its 254 scheduled flights did not operate. A late arrival costs about an hour, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- PHL to SJU, every carrier and departure
- SJU to PHL, the return direction
- Frontier Airlines 4462 on the same route50.7%
- Philadelphia International (PHL) delay statistics
- Luis Munoz Marin International (SJU) delay statistics
- Frontier Airlines on-time record
- Every Frontier Airlines flight number with a record
- The most and least reliable flight numbers in the US
- The best time of day to fly, according to 7.05 million flight records
A flight number here means Frontier Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.