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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
Houston flights leaving MIA 6–7 am: 3Close ×
UA 2074 MIA 06:30 IAH 08:24 2h 54m 86 95% 0.0% 30 min
UA 2606 MIA 06:30 IAH 08:24 2h 54m 16 100% 0.0% –
F9 1067 MIA 06:30 IAH 08:24 2h 54m 170 85% 3.5% 91 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.
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