BOS (Boston) to SDF (Louisville) flights arrive on time 90% of the time. The most reliable airline on this route is null at 91%. The average delay is 61 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated March 2026.BOS → SDF
BOS (Boston) to SDF (Louisville)
BOS → SDF on-time performance by month
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JanFebMarAprMayJunJulAugSepOctNovDec
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This route is usually on time. About 90% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Accurate?
Airlines are roughly equal on this route — null leads slightly at 91% vs Republic Airways at 89%.
Airline Comparison
leads at 91% on time; Republic Airways trails at 89%.
Accurate?
Good to know
Departing from BOS
79% on timeExpect ~19 min sitting on the taxiway after your gate pushes back. BOS has long runway queues.
TSA is currently ~5 min. Best time: 4 AM (about 5 min).
Arriving at SDF
81% on timeWhen flights into SDF are late, the average delay is 74 minutes. Build buffer if you have ground plans.
If connecting at SDF: TSA is ~5 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.