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Showing Delta only (incl. its regional partners)All airlines ×
1,234 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 96% depart on time. After 4 pm it’s 62%.

Best time to leave 9–10 am 96% arrive on time from PHL
Best single flight DL 5740 PHL 06:00 → BOS 07:30 · 92% on time Avoid DL 5706 PHL 17:35 → BOS 19:07 · 67% 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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% 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.

DL 5740flown by Republic PHL 06:00 BOS 07:30 92%
DL 5845flown by Republic PHL 09:30 BOS 10:59 90%
DL 5805flown by Republic PHL 13:10 BOS 14:40 72%
DL 5706flown by Republic PHL 17:35 BOS 19:07 67%

All 5 Delta 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.

DL 5740flown by Republic PHL 06:00 BOS 07:30 1h 30m 365 92% 1.9% 73 min
DL 5845flown by Republic PHL 09:30 BOS 10:59 1h 29m 324 90% 3.1% 59 min
DL 5805flown by Republic PHL 13:10 BOS 14:40 1h 30m 193 72% 1.6% 79 min
DL 5706flown by Republic PHL 17:35 BOS 19:07 1h 32m 181 67% 6.6% 69 min
DL 5714flown by Republic PHL 19:59 BOS 21:49 1h 50m 48 70% 10.4% 85 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.

Delta PHL BOS 1h 32m 81% 3.4% 1,234 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