SDF to MIA flight delays & on-time performance
Nonstop flights from Louisville Muhammad Ali International Airport to Miami International Airport · 910 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SDF or MIA right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Louisville (SDF) to Miami (MIA) arrived on time 82% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 1.6% were cancelled, and 7% arrived an hour or more late.
- American Airlines was the most punctual airline here (84% on time); Envoy Air was the least (78%).
- Departures scheduled around 6am did best (84% on time); around 5pm did worst (68%).
- Wednesday was the most reliable day to fly (91% on time) and Sunday the least (73%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (62%).
Which airline is most on time from SDF to MIA?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| American Airlines | 84% | 1.6% | 26 min | 6.4% | 368 |
| Envoy AirRegional airline operating American Eagle flights. | 78% | 2.2% | 12 min | 6.7% | 46 |
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 67% | 0.0% | 29 min | 13.3% | 15 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am100%14 flights
- 6am84%351 flights
- 12pm78%24 flights
- 5pm68%25 flights
- 6pm70%10 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday83%3.3% cancelled
- Tuesday82%1.8% cancelled
- Wednesday91%1.8% cancelled
- Thursday88%1.7% cancelled
- Friday83%0.0% cancelled
- Saturday79%0.0% cancelled
- Sunday73%3.2% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)62%
- Late-arriving aircraft28%
- Air traffic control & airport congestion7%
- Extreme weather3%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather86%
- Airline (crew, maintenance, cleaning, fueling)14%
- Air traffic control & airport congestion0%
- Security0%
SDF to MIA: common questions
- How often are SDF to MIA flights on time?
- 82% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Louisville to Miami cancelled?
- 1.6% of scheduled flights were cancelled (7 of 429).
- How long are typical delays?
- Across all flights the average arrival delay was 24 min (early arrivals count as zero). Flights that were late arrived 134 min behind schedule on average, and 6.7% of flights were an hour or more late.
- How long is taxi time at SDF?
- Flights on this route spent 17 min taxiing from the gate to takeoff on average.
Related routes
Return trip: MIA to SDF — 65% on time
More flights from Louisville
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SDF → MIA, nonstop flights by US airlines that report to the DOT. How we calculate this.