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).

FLL

% 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	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