IAH (Houston) to MIA (Miami) flights arrive on time 77% of the time. The most reliable airline on this route is null at 80%. The average delay is 92 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated July 2026.IAH → MIA
IAH (Houston) to MIA (Miami)
IAH → MIA on-time performance by month
24
25
26
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
This route is on time most of the time. About 77% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Accurate?
null edges out Frontier Airlines on this route — 80% vs 68% on time.
Airline Comparison
leads at 80% on time; Frontier Airlines trails at 68%.
Accurate?
Good to know
Departing from IAH
79% on timeExpect ~20 min sitting on the taxiway after your gate pushes back. IAH has long runway queues.
TSA is currently ~10 min. Best time: 4 AM (about 5 min).
Arriving at MIA
76% on timeWhen flights into MIA are late, the average delay is 77 minutes. Build buffer if you have ground plans.
If connecting at MIA: TSA is ~29 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
Check what owes you — refund rights, action plan, complaint email. Free.
Flying out of IAH? We'll brief you.
Delays, TSA, weather, gates — we'll let you know if something matters.
Know someone flying soon?
Send them the link — delay data, TSA waits, weather, all free.
Data last updated July 2026. Source: Bureau of Transportation Statistics.