Showing Frontier only (incl. its regional partners)All airlines ×

887 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 78% depart on time. After 4 pm it’s 64%.

Best time to leave 11 pm–12 am 82% arrive on time from PHL

Best single flight F9 1016 PHL 11:46 → SJU 15:50 · 67% on time Avoid F9 4462 PHL 20:03 → SJU 23:58 · 52% on time

Time of day × airport

Share of this route’s flights leaving within 15 minutes, by airport and scheduled departure hour, over Aug 2025 – Jul 2026. Blank: no flights then (or fewer than 40 in the year).

PHL

% of this route’s flights leaving within 15 min (small number: flights in the Jun 6 – Jul 31, 2026 schedule): 85+75–8465–7455–64under 55

Pick an hour to see this route’s flights leaving then.

Flights, best and worst

Flights in the Jun 6 – Jul 31, 2026 schedule that ran 150+ times in the year. Times are local. Pick a flight for its history.


F9 1016	PHL 11:46	SJU 15:50	67%
F9 1726	PHL 23:59	SJU 03:57	59%
F9 4462	PHL 20:03	SJU 23:58	52%

All 4 Frontier flights in the current schedule

Every flight that flew in the Jun 6 – Jul 31, 2026 schedule, with its record over Aug 2025 – Jul 2026. Times are local. Click a column to sort.


F9 1016	PHL 11:46	SJU 15:50	4h 04m	277	67%	3.6%	65 min
F9 1166	PHL 11:55	SJU 15:57	4h 02m	66	43%	1.5%	64 min
F9 4462	PHL 20:03	SJU 23:58	3h 55m	313	52%	3.8%	67 min
F9 1726	PHL 23:59	SJU 03:57	4h 00m	190	59%	3.2%	102 min

Nonstops by airline and airport

Arriving within 15 minutes, Aug 2025 – Jul 2026. Pick a row to see that airline’s flights on that airport pair.


Frontier	PHL	SJU	4h 00m	57%	3.4%	887	Flying now

Flying on a particular day? Pick a date above and the same ranking uses our forecast odds for each flight that day: Tomorrow.

About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON