Route · MIA → SDF · 2020–2025 BTS data
Miami to Louisville
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), MIA to SDF (Miami to Louisville) ranks #3467 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 75.1%
- On-time
- -3.9 pts
- vs US avg
- 82 min
- Delay when late
- 2,637
- Flights
- #3467 of 4927
- Corpus placement
Cancelled
1.0%
Best Month
Dec 2023 79%
Worst Month
May 2024 52%
Distance
910 mi
Carriers
14
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 31 | 10 | 0 | 0 | AA |
| Nov 2025 | 30 | 10 | 0 | 0 | AA |
| Oct 2025 | 31 | 15 | 0 | 0 | AA |
| Sep 2025 | 32 | 8 | 0 | 0 | MQ,AA |
| Aug 2025 | 58 | 21 | 0 | 0 | AA,YX,MQ |
| Jul 2025 | 35 | 15 | 0 | 0 | AA,YX |
| Jun 2025 | 34 | 10 | 2 | 0 | AA,YX |
| May 2025 | 33 | 16 | 0 | 0 | AA,YX |
| Apr 2025 | 34 | 11 | 0 | 0 | YX,AA |
| Mar 2025 | 31 | 10 | 1 | 0 | AA |
| Jan 2025 | 31 | 3 | 1 | 0 | AA |
| Dec 2024 | 31 | 9 | 0 | 0 | AA |
| Nov 2024 | 30 | 5 | 0 | 0 | AA |
| Oct 2024 | 35 | 5 | 1 | 0 | MQ,AA |
| Sep 2024 | 50 | 8 | 0 | 0 | MQ |
| Aug 2024 | 31 | 8 | 1 | 0 | AA,MQ |
| Jul 2024 | 31 | 11 | 0 | 0 | AA |
| Jun 2024 | 34 | 19 | 1 | 0 | AA,MQ |
| May 2024 | 64 | 31 | 0 | 0 | AA,MQ,NK |
| Apr 2024 | 57 | 16 | 0 | 0 | AA,MQ |
| Mar 2024 | 62 | 18 | 2 | 0 | AA,MQ |
| Feb 2024 | 44 | 12 | 0 | 0 | AA,MQ |
| Jan 2024 | 38 | 13 | 0 | 0 | AA,MQ,YX |
| Dec 2023 | 56 | 12 | 0 | 0 | MQ,YX,AA |
MIA–SDF seasonal on-time pattern
Best: January (84.7%) · weakest: June (61.2%)
Strongest calendar month
January
84.7% on-time · ~44 flights/mo
Busiest calendar month
February
~52 flights/mo avg
Weakest calendar month
June
61.2% on-time · ~38 flights/mo
Cancellation Rate
1.0%
9 of 943 flights
Diversion Rate
0.0%
0 of 943 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
MIA - Miami
Full on-time, delay-cause, and seasonal performance for Miami, FL.
MIA on-time profileSDF - Louisville
Full on-time, delay-cause, and seasonal performance for Louisville, KY.
SDF on-time profileCompare the two airports
See MIA and SDF side by side on delays, cancellations, and reliability.
Compare MIA vs SDFOrigin-hub reliability standing
Mid-pack among MIA departures
From MIA, this corridor sits with 37 other 75–85% on-time routes out of 63 tracked departures, not the hub's reliability leaders (1 at ≥85%) and not the softest ( 25 below 75%). Destination: Louisville · fleet on-time rank #4456 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to MIA–SDF.
Routes with a similar on-time rate
What the Data Says About MIA to SDF
The Miami to Louisville corridor (MIA to SDF) posts a 75.1% on-time rate on the lower edge of the average band, based on 2,637 tracked flights. Late flights run 81.9 minutes behind on average. 14 carriers cover the 910-mile route; over the last 24 months, 9 of 943 flights were cancelled (1.0%) and 0.0% diverted.
The monthly split is wide on this route: Dec 2023 posted the strongest performance at 79% on-time, while May 2024 came in at just 52% - a 27-point swing worth factoring into travel timing.
On the multi-year calendar, MIA–SDF peaks in January at 84.7% on-time while February carries the heaviest traffic (~52 flights per month) ; the softest month is June at 61.2%, a 23.5-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does MIA to SDF rank among US routes by traffic? ▼
How often are flights delayed from MIA to SDF? ▼
What is the cancellation rate for MIA to SDF? ▼
How far is the flight from MIA to SDF? ▼
When is the best time to fly from MIA to SDF? ▼
Airports on this route
Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Using MIA–SDF data
MIA–SDF is mid-pack at 75.1% on-time; month and carrier mix move more than the corridor headline.
- Compare MIA and SDF airport profiles: delay causes and top routes differ even on the same corridor. MIA airport
- If your dates flex, January (84.7% on-time) beats June (61.2%) on this corridor. Seasonal chart
- 4 other routes post a similar 75.1% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.