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3,359 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 88% depart on time. After 4 pm it’s barely half.

Best time to leave 6–7 am 83% arrive on time from BOS
Best single flight B6 569 BOS 06:10 → FLL 09:32 · 82% on time Avoid B6 269 BOS 12:30 → FLL 15:56 · 59% 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
BOS
84
92
87
88
80
76
69
69
58
66
70
61
52
44
58
58
40
% 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.
Delta 886 70% 3.0% 79 min
JetBlue 1,963 67% 3.3% 68 min
Spirit 510 65% 5.7% 83 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.
B6 569 BOS 06:10 FLL 09:32 82%
DL 1401 BOS 07:59 FLL 11:26 82%
B6 69 BOS 11:26 FLL 14:50 68%
DL 2196 BOS 15:07 FLL 18:36 62%
B6 369 BOS 17:31 FLL 20:59 62%
· · ·
B6 269 BOS 12:30 FLL 15:56 59%
All 10 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 BOS FLL 3h 29m 70% 3.0% 886 Flying now
JetBlue BOS FLL 3h 30m 67% 3.3% 1,963 Flying now
Spirit BOS FLL 3h 29m 65% 5.7% 510 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