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4,529 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 7 in 10.

Best time to leave 5–6 am 94% 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).

5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
JFK
94
89
90
79
81
80
82
75
81
77
76
75
72
71
65
53
% 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.
Frontier 243 82% 2.1% 99 min
American 2,665 78% 2.7% 112 min
Delta 1,621 77% 3.3% 76 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.
DL 1528 JFK 07:05 MIA 10:21 86%
AA 2017 JFK 07:30 MIA 10:45 85%
DL 1514 JFK 11:05 MIA 14:21 78%
AA 688 JFK 17:25 MIA 20:59 76%
AA 1174 JFK 18:50 MIA 22:22 74%
· · ·
DL 2500 JFK 15:14 MIA 18:54 72%
DL 1428 JFK 19:52 MIA 23:33 70%
All 12 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 JFK MIA 3h 17m 78% 2.7% 2,665 Flying now
Delta JFK MIA 3h 20m 77% 3.3% 1,621 Flying now
Frontier JFK MIA 3h 18m 82% 2.1% 243 Not 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