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3,596 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 7–8 am 92% arrive on time from SJU
Best single flight DL 1854 SJU 07:05 → JFK 11:01 · 93% on time Avoid B6 1004 SJU 15:24 → JFK 19:26 · 69% 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
SJU
83
92
95
86
91
67
71
76
75
76
58
77
75
65
46
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
New York flights leaving SJU 7–8 am: 2Close ×
DL 1854 SJU 07:05 JFK 11:01 3h 56m 365 93% 1.1% 108 min
B6 904 SJU 07:50 JFK 11:52 4h 03m 309 75% 2.9% 78 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.
Delta 1,104 88% 2.2% 79 min
Frontier 255 80% 2.0% 63 min
JetBlue 2,237 74% 3.8% 84 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 1854 SJU 07:05 JFK 11:01 93%
DL 1961 SJU 17:45 JFK 22:01 87%
DL 1966 SJU 13:10 JFK 17:19 85%
B6 2904 SJU 05:01 JFK 08:54 84%
B6 1604 SJU 13:12 JFK 17:20 82%
· · ·
B6 1104 SJU 12:04 JFK 15:59 75%
B6 304 SJU 18:21 JFK 22:29 71%
B6 1004 SJU 15:24 JFK 19:26 69%
All 11 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.
Delta SJU JFK 4h 17m 88% 2.2% 1,104 Flying now
JetBlue SJU JFK 4h 04m 74% 3.8% 2,237 Flying now
Frontier SJU JFK 4h 14m 80% 2.0% 255 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