IAH (Houston) to SDF (Louisville) flights arrive on time 67% of the time. The average delay is 37 minutes. Delays on this route are most often caused by air traffic and busy airspace.
Source: Bureau of Transportation Statistics. Updated August 2026.IAH → SDF
IAH (Houston) to SDF (Louisville)
IAH → SDF on-time performance by month
25
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
This route is delayed fairly often. About 67% of flights arrive on schedule.
Delays on this route are most often caused by air traffic and busy airspace.
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 ~12 min. Best time: 4 AM (about 5 min).
Arriving at SDF
81% on timeWhen flights into SDF are late, the average delay is 76 minutes. Build buffer if you have ground plans.
If connecting at SDF: TSA is ~27 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
Check what your airline 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.
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Data last updated August 2026. Source: Bureau of Transportation Statistics.