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3,347 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 56%.

Best time to leave 6–7 am 92% arrive on time from FLL
Best single flight B6 690 FLL 06:30 → BOS 09:42 · 93% on time Avoid B6 70 FLL 14:37 → BOS 17:56 · 58% 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).

6
7
8
9
10
11
12
13
14
15
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17
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19
20
21
FLL
94
88
92
85
72
65
50
59
59
48
52
49
60
62
33
% 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
Boston flights leaving FLL 8–9 pm: 2Close ×
DL 522 FLL 20:51 BOS 00:16 3h 25m 22 47% 13.6% 42 min
B6 470 FLL 20:59 BOS 00:42 3h 20m 363 63% 2.5% 68 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 885 73% 3.2% 81 min
JetBlue 1,953 66% 3.1% 78 min
Spirit 509 62% 5.3% 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.
B6 690 FLL 06:30 BOS 09:42 93%
DL 2196 FLL 19:35 BOS 22:58 69%
B6 470 FLL 20:59 BOS 00:42 63%
B6 70 FLL 14:37 BOS 17:56 58%
All 9 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 FLL BOS 3h 17m 73% 3.2% 885 Flying now
JetBlue FLL BOS 3h 17m 66% 3.1% 1,953 Flying now
Spirit FLL BOS 3h 13m 62% 5.3% 509 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