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Showing Frontier only (incl. its regional partners)All airlines ×
1,046 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 85% depart on time. After 4 pm it’s 65%.

Best time to leave 6–7 am 80% arrive on time from PHL
Best single flight F9 2551 PHL 06:30 → ATL 09:05 · 71% on time Avoid F9 1101 PHL 13:32 → ATL 15:57 · 60% 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).

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PHL
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70
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% 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 2551 PHL 06:30 ATL 09:05 71%
F9 2297 PHL 08:30 ATL 10:57 71%
F9 1003 PHL 16:30 ATL 19:02 67%
F9 1101 PHL 13:32 ATL 15:57 60%

All 5 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 2551 PHL 06:30 ATL 09:05 2h 35m 304 71% 4.3% 61 min
F9 2297 PHL 08:30 ATL 10:57 2h 22m 227 71% 1.8% 72 min
F9 1101 PHL 13:32 ATL 15:57 2h 25m 210 60% 0.5% 79 min
F9 1003 PHL 16:30 ATL 19:02 2h 27m 270 67% 3.0% 71 min
F9 1147 PHL 16:40 ATL 19:07 2h 30m 35 41% 2.9% 75 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 ATL 2h 27m 67% 2.6% 1,046 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