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3,381 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 92% depart on time. After 4 pm it’s 3 in 5.

Best time to leave 6–7 am 93% arrive on time from MIA
Best single flight DL 1399 MIA 11:44 → BOS 15:17 · 74% on time Avoid AA 2539 MIA 20:20 → BOS 23:41 · 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).

6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
MIA
95
83
93
75
82
74
61
77
63
67
59
61
59
% 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 889 72% 2.8% 82 min
American (incl. Envoy, Republic) 2,273 71% 1.7% 73 min
Spirit 184 57% 6.5% 71 min
JetBlue 35 – 0.0% 48 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.
DL 1399 MIA 11:44 BOS 15:17 74%
DL 776 MIA 19:59 BOS 23:35 69%
AA 1074 MIA 18:20 BOS 21:45 61%
AA 1054 MIA 21:45 BOS 00:59 60%
AA 2539 MIA 20:20 BOS 23:41 59%

All 9 flights in the current schedule

Every flight that flew in the Jun 6 – Jul 31, 2026 schedule, with its record over Aug 2025 – Jul 2026. Times are local. Click a column to sort.
AA 815 MIA 06:42 BOS 10:06 3h 26m 56 98% 0.0% 22 min
AA 1589 MIA 09:23 BOS 12:48 3h 24m 66 82% 0.0% 84 min
AA 1565 MIA 10:50 BOS 14:22 3h 31m 72 83% 1.4% 41 min
DL 1399 MIA 11:44 BOS 15:17 3h 30m 227 74% 0.4% 86 min
AA 1538 MIA 12:42 BOS 16:17 3h 35m 72 72% 1.4% 92 min
AA 1074 MIA 18:20 BOS 21:45 3h 25m 364 61% 1.6% 81 min
DL 776 MIA 19:59 BOS 23:35 3h 36m 180 69% 4.4% 61 min
AA 2539 MIA 20:20 BOS 23:41 3h 21m 325 59% 1.8% 77 min
AA 1054 MIA 21:45 BOS 00:59 3h 14m 362 60% 2.5% 64 min

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 MIA BOS 3h 26m 72% 2.8% 889 Flying now
American MIA BOS 3h 22m 71% 1.7% 2,273 Flying now
Spirit MIA BOS 3h 22m 57% 6.5% 184 Not flying now
JetBlue MIA BOS 3h 29m 77%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