MIA (Miami) to JAX (Jacksonville) flights arrive on time 74% of the time. The most reliable airline on this route is null at 84%. The average delay is 78 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated March 2026.MIA → JAX
MIA (Miami) to JAX (Jacksonville)
MIA → JAX on-time performance by month
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25
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
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This route is delayed fairly often. About 74% 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 84% on time vs American Airlines at 66%.
Airline Comparison
leads at 84% on time; American Airlines trails at 66%.
Accurate?
Good to know
Departing from MIA
76% on timeExpect ~19 min sitting on the taxiway after your gate pushes back. MIA has long runway queues.
TSA is currently ~8 min. Best time: 4 AM (about 5 min).
Arriving at JAX
79% on timeWhen flights into JAX are late, the average delay is 72 minutes. Build buffer if you have ground plans.
If connecting at JAX: TSA is ~13 min right now. Allow at least 60 minutes for a domestic connection.
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Data last updated March 2026. Source: Bureau of Transportation Statistics.