MIA (Miami) to IAH (Houston) flights arrive on time 76% of the time. The most reliable airline on this route is null at 89%. The average delay is 79 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated July 2026.MIA → IAH
MIA (Miami) to IAH (Houston)
MIA → IAH on-time performance by month
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JanFebMarAprMayJunJulAugSepOctNovDec
Worse
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This route is on time most of the time. About 76% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Accurate?
null is significantly more reliable on this route at 89% on time vs American Airlines at 69%.
Airline Comparison
leads at 89% on time; American Airlines trails at 69%.
Accurate?
Good to know
Departing from MIA
76% on timeExpect ~20 min sitting on the taxiway after your gate pushes back. MIA has long runway queues.
TSA is currently ~29 min. Best time: 4 AM (about 5 min).
Arriving at IAH
79% on timeWhen flights into IAH are late, the average delay is 77 minutes. Build buffer if you have ground plans.
If connecting at IAH: TSA is ~10 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
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Flying out of MIA? We'll brief you.
Delays, TSA, weather, gates — we'll let you know if something matters.
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Data last updated July 2026. Source: Bureau of Transportation Statistics.