American AirlinesAA
Flights AA647 21:14 Mo We Th Fr Sa Su
live
Direct flights from Miami (MIA) to Louisville (SDF): 8 nonstop departures observed each week across 2 airlines. 0% of the last 5 operated flights arrived within 15 minutes of schedule. The median arrival is 110 minutes late. No cancellations were recorded across the 5 tracked flights. The nonstop covers 1,469 km, an estimated 2 hours 23 minutes in the air. Measured by Pro Flight Search from live flight boards at Miami and Louisville. Updated 12 September 2026 at 07:23 UTC.
MIA
Miami
disrupted · +263
SDF
Louisville
smooth · +2
1,469 km · ~2h 23m est.
Runs rough · 2 airlines · 8x weekly · nonstop
0% on time
of the last 5 operated MIA → SDF flights arrived within 15 minutes
Median arrival delay is +110 min. 0 of 5 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival+110 minacross the last 5 operated legs
Flight time~2h 23mestimated from route distance
Weekly departures8x2 direct airlines on the leg
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
American AirlinesEnvoy Air
Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.
Who flies it
observed on the boards · 7 daysEnvoy AirMQ
Flights MQ3938 varies Tu Sa
History
operated legs · board outcomesActual board outcomes rather than schedules, paired departure and arrival per flight and day.
Full board history, day by day →
Airports right now
live boardsWeather lens
Current conditions put the pressure at SDF: 39% odds of a 15+ minute delay and around +8 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →
next sweep in 120s
How the Miami to Louisville route actually runs
Pro Flight Search records official board updates for nonstop MIA to SDF flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.
Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Cite this data
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Suggested citation
Pro Flight Search — Miami (MIA) to Louisville (SDF) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/MIA-SDF
MIA to SDF questions
Is MIA–SDF running on time right now?
Significant delay risk. The departure side at MIA is the weaker end, route health score 50/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from MIA to SDF?
Great-circle distance is 1,469 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 134–156 min gate-to-gate on this route.
How often does MIA–SDF fly?
2 carriers operate this route, around 8 flights a week between them. Compare carrier days and times in the airline list above.
What does the route health score measure?
A blend of departure-side delay at MIA and arrival-side delay at SDF, computed from rolling delay windows (refreshed every 40 minutes) with a daily-rollup fallback. Current MVFR, IFR, or LIFR endpoint weather caps the score when flight rules can limit throughput. Higher is healthier: 100 means operations are clean at both ends.
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