3,033 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 9 in 10 depart on time. After 4 pm it’s 57%.

Best time to leave 7–8 am 89% arrive on time from PHL

Best single flight F9 3339 PHL 20:37 → DEN 23:04 · 67% on time Avoid AA 3158 PHL 17:30 → DEN 19:45 · 64% 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.

Airlines on this route

Arriving within 15 minutes. Regional flights count under the airline that sells them. Pick an airline to see its flights.


United	953	84%	0.7%	81 min
American	904	74%	1.4%	65 min
Southwest	879	71%	1.1%	57 min
Frontier	297	68%	2.7%	114 min

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 3339	PHL 20:37	DEN 23:04	67%
AA 3158	PHL 17:30	DEN 19:45	64%

All 14 flights on this route →

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.


United	PHL	DEN	4h 20m	84%	0.7%	953	Flying now
American	PHL	DEN	4h 20m	74%	1.4%	904	Flying now
Southwest	PHL	DEN	4h 10m	71%	1.1%	879	Flying now
Frontier	PHL	DEN	4h 19m	68%	2.7%	297	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