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3,712 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 2 in 3.

Best time to leave 5–6 am 92% arrive on time from IAH
Best single flight AA 1047 IAH 05:10 → MIA 08:51 · 91% on time Avoid UA 410 IAH 12:00 → MIA 15:47 · 84% 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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IAH
83
82
74
61
% 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 1,469 82% 0.2% 62 min
American (incl. Envoy, Republic) 1,688 78% 1.2% 108 min
Spirit 380 70% 3.2% 82 min
Frontier 175 68% 4.0% 163 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.

AA 1047 IAH 05:10 MIA 08:51 91%
UA 1966 IAH 07:25 MIA 11:12 89%
AA 1347 IAH 07:35 MIA 11:20 87%
UA 410 IAH 12:00 MIA 15:47 84%
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 IAH MIA 2h 38m 82% 0.2% 1,469 Flying now
American IAH MIA 2h 38m 78% 1.2% 1,688 Flying now
Frontier IAH MIA 2h 54m 68% 4.0% 175 Flying now
Spirit IAH MIA 2h 33m 70% 3.2% 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