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1,388 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 86% depart on time. After 4 pm it’s 73%.

Best time to leave 8–9 am 81% arrive on time from PHL
Best single flight AS 443 PHL 16:26 → SEA 19:30 · 66% 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
86
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66
% 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
Seattle flights leaving PHL 4–5 pm: 1Close ×
AS 443 PHL 16:26 SEA 19:30 6h 04m 333 66% 2.4% 52 min

Airlines on this route

Arriving within 15 minutes. Regional flights count under the airline that sells them. Pick an airline to see its flights.
American 649 73% 2.2% 52 min
Alaska 657 69% 1.7% 51 min
Delta 82 – 0.0% 83 min

Dimmed: fewer than 150 flights in the year, too few to rank.

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.
AS 443 PHL 16:26 SEA 19:30 66%
All 8 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.
American PHL SEA 6h 14m 73% 2.2% 649 Flying now
Delta PHL SEA 6h 14m 72% 0.0% 82 Flying now
Alaska PHL SEA 6h 04m 69% 1.7% 657 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