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

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

Leave before 9 am: 83% depart on time. After 4 pm it’s 7 in 10.

Best time to leave 7–8 am 85% arrive on time from PHL

Best single flight F9 2059 PHL 07:20 → RDU 08:45 · 85% on time Avoid F9 1517 PHL 19:13 → RDU 21:01 · 79% 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 2059	PHL 07:20	RDU 08:45	85%
F9 1517	PHL 19:13	RDU 21:01	79%

All 3 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 2059	PHL 07:20	RDU 08:45	1h 28m	253	85%	0.8%	74 min
F9 2071	PHL 17:16	RDU 18:48	1h 32m	64	71%	9.4%	76 min
F9 1517	PHL 19:13	RDU 21:01	1h 42m	264	79%	3.0%	79 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	RDU	1h 34m	81%	2.7%	600	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