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3,384 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 93% depart on time. After 4 pm it’s 63%.

Best time to leave 5–6 am 96% arrive on time from BOS
Best single flight AA 1418 BOS 05:10 → MIA 08:38 · 96% on time Avoid DL 776 BOS 15:18 → MIA 19:04 · 64% 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).

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BOS
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% 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
Miami flights leaving BOS 6–7 am: 1Close ×
AA 873 BOS 06:00 MIA 09:30 3h 30m 175 90% 1.1% 98 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.

American (incl. Republic) 2,273 83% 1.7% 75 min
Delta 891 73% 2.6% 79 min
Spirit 185 56% 5.9% 84 min
JetBlue 35 – 0.0% 24 min

Dimmed: fewer than 150 flights in the year, too few to rank.

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.

AA 1418 BOS 05:10 MIA 08:38 96%
AA 873 BOS 06:00 MIA 09:30 90%
AA 1259 BOS 08:00 MIA 11:34 90%
DL 1399 BOS 07:05 MIA 10:39 86%
DL 776 BOS 15:18 MIA 19:04 64%
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.

American BOS MIA 3h 40m 83% 1.7% 2,273 Flying now
Delta BOS MIA 3h 44m 73% 2.6% 891 Flying now
Spirit BOS MIA 3h 32m 56% 5.9% 185 Not flying now
JetBlue BOS MIA 3h 29m 80%few flights 0.0% 35 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