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Showing Delta only (incl. its regional partners)All airlines ×
1,621 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 73%.

Best time to leave 7–8 am 86% arrive on time from JFK
Best single flight DL 1528 JFK 07:05 → MIA 10:21 · 86% on time Avoid DL 1428 JFK 19:52 → MIA 23:33 · 70% 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).

7
8
9
10
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14
15
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JFK
91
82
82
75
84
71
% 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 1528 JFK 07:05 MIA 10:21 86%
DL 1514 JFK 11:05 MIA 14:21 78%
DL 2500 JFK 15:14 MIA 18:54 72%
DL 1428 JFK 19:52 MIA 23:33 70%

All 4 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 1528 JFK 07:05 MIA 10:21 3h 16m 358 86% 4.2% 62 min
DL 1514 JFK 11:05 MIA 14:21 3h 16m 364 78% 3.0% 61 min
DL 2500 JFK 15:14 MIA 18:54 3h 40m 267 72% 3.4% 64 min
DL 1428 JFK 19:52 MIA 23:33 3h 41m 352 70% 3.4% 92 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 JFK MIA 3h 20m 77% 3.3% 1,621 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