Route · FLL → SDF · 2020–2025 BTS data
Fort Lauderdale to Louisville
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), FLL to SDF (Fort Lauderdale to Louisville) ranks #4111 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 73.2%
- On-time
- -5.8 pts
- vs US avg
- 71 min
- Delay when late
- 1,560
- Flights
- #4111 of 4927
- Corpus placement
Cancelled
1.5%
Best Month
N/A
Worst Month
N/A
Distance
895 mi
Carriers
6
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 33 | 16 | 4 | 0 | WN,NK,G4 |
| Oct 2025 | 33 | 4 | 0 | 0 | G4,NK |
| Sep 2025 | 30 | 3 | 0 | 0 | NK,G4 |
| Aug 2025 | 35 | 11 | 0 | 0 | G4,NK |
| Jul 2025 | 42 | 9 | 1 | 0 | G4,NK |
| Jun 2025 | 35 | 9 | 1 | 0 | NK,G4 |
| Apr 2025 | 37 | 8 | 0 | 0 | G4,NK,WN |
| Mar 2025 | 46 | 15 | 0 | 2 | NK,WN,G4 |
| Jan 2025 | 36 | 11 | 2 | 0 | WN,G4,NK |
| Dec 2024 | 36 | 13 | 0 | 0 | G4,NK,WN |
| Nov 2024 | 37 | 5 | 0 | 0 | NK,WN,G4 |
| Oct 2024 | 45 | 7 | 0 | 0 | G4,NK |
| Sep 2024 | 30 | 4 | 0 | 0 | G4,NK |
| Aug 2024 | 32 | 14 | 1 | 0 | G4,NK |
| Jul 2024 | 40 | 17 | 2 | 0 | G4,NK |
| Jun 2024 | 37 | 10 | 2 | 0 | G4,NK |
| May 2024 | 35 | 7 | 0 | 0 | G4,NK |
| Apr 2024 | 35 | 4 | 0 | 0 | G4,NK,WN |
| Mar 2024 | 49 | 12 | 1 | 0 | G4,NK,WN |
| Feb 2024 | 38 | 9 | 0 | 0 | G4,NK,WN |
| Jan 2024 | 36 | 13 | 0 | 0 | G4,NK,WN |
| Dec 2023 | 43 | 15 | 0 | 0 | G4,NK,WN |
| Nov 2023 | 40 | 8 | 0 | 0 | G4,NK,WN |
| Oct 2023 | 44 | 4 | 0 | 0 | G4,NK,WN |
FLL–SDF seasonal on-time pattern
Best: September (86.9%) · weakest: March (64.1%)
Strongest calendar month
September
86.9% on-time · ~34 flights/mo
Busiest calendar month
July
~45 flights/mo avg
Weakest calendar month
March
64.1% on-time · ~43 flights/mo
Cancellation Rate
1.5%
14 of 904 flights
Diversion Rate
0.2%
2 of 904 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
FLL - Fort Lauderdale
Full on-time, delay-cause, and seasonal performance for Fort Lauderdale, FL.
FLL on-time profileSDF - Louisville
Full on-time, delay-cause, and seasonal performance for Louisville, KY.
SDF on-time profileCompare the two airports
See FLL and SDF side by side on delays, cancellations, and reliability.
Compare FLL vs SDFOrigin-hub reliability standing
Softer reliability from FLL
Among 62 routes leaving FLL, only 29 (including this one) clear below 75% on-time, while 1 stay ≥85% and 32 sit mid-band. Travelers comparing FLL options should weigh this 73.2% print against those peers · fleet on-time rank #4670 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to FLL–SDF.
Routes with a similar on-time rate
What the Data Says About FLL to SDF
On-time performance on the FLL to SDF pairing (Fort Lauderdale to Louisville) trails a chunk of the network: 73.2% of 1,560 tracked flights arrived on schedule, with a 70.9-minute average delay on the ones that ran late. The route spans about 895 miles across 6 carriers. Cancellations over the trailing 24 months hit 1.5% (14 of 904 flights), with 0.2% diverted.
Monthly performance data for this route did not show a clear best/worst split in the sample window; review the monthly table above for period-by-period detail.
On the multi-year calendar, FLL–SDF peaks in September at 86.9% on-time while July carries the heaviest traffic (~45 flights per month) ; the softest month is March at 64.1%, a 22.8-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does FLL to SDF rank among US routes by traffic? ▼
How often are flights delayed from FLL to SDF? ▼
What is the cancellation rate for FLL to SDF? ▼
How far is the flight from FLL 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 FLL–SDF data
FLL–SDF sits 5.8 pts below the national 79% average; check the seasonal chart and airport profiles before treating the headline as typical.
- Compare FLL and SDF airport profiles: delay causes and top routes differ even on the same corridor. FLL airport
- If your dates flex, September (86.9% on-time) beats March (64.1%) on this corridor. Seasonal chart
- 4 other routes post a similar 73.2% 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.