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3,713 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 2 in 3.

Best time to leave 6–7 am 95% arrive on time from MIA
Best single flight UA 470 MIA 12:29 → IAH 14:23 · 87% on time Avoid AA 2541 MIA 19:42 → IAH 21:33 · 65% 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
22
MIA
95
92
91
89
90
81
89
78
73
65
75
64
56
68
58
65
% 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.
United 1,468 87% 0.4% 94 min
Frontier 176 83% 4.0% 90 min
American (incl. Envoy, Republic) 1,689 73% 1.1% 72 min
Spirit 380 70% 2.9% 87 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.
UA 470 MIA 12:29 IAH 14:23 87%
F9 1067 MIA 06:30 IAH 08:24 85%
UA 1216 MIA 16:53 IAH 18:56 74%
AA 2230 MIA 22:15 IAH 23:59 70%
AA 2541 MIA 19:42 IAH 21:33 65%
All 12 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.
United MIA IAH 3h 00m 87% 0.4% 1,468 Flying now
Frontier MIA IAH 2h 54m 83% 4.0% 176 Flying now
American MIA IAH 2h 58m 73% 1.1% 1,689 Flying now
Spirit MIA IAH 3h 01m 70% 2.9% 380 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