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Route · CLT → SDF · 2020–2025 BTS data

Charlotte to Louisville

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), CLT to SDF (Charlotte to Louisville) ranks #1007 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

80.2%
On-time
+1.2 pts
vs US avg
78 min
Delay when late
11,247
Flights
#1007 of 4927
Corpus placement

Cancelled

1.7%

Best Month

Oct 2025 88%

Worst Month

Jul 2024 53%

Distance

335 mi

Carriers

17

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 145 37 2 0 OH,AA
Nov 2025 140 28 3 0 OH,AA
Oct 2025 142 17 0 0 AA,OH
Sep 2025 159 30 1 0 OH,AA
Aug 2025 156 41 1 1 AA,OH
Jul 2025 142 54 2 0 AA,OH
Jun 2025 142 58 6 0 AA,OH
May 2025 150 50 2 0 AA,OH
Apr 2025 138 39 1 0 OH,AA
Mar 2025 152 33 6 1 AA,OH
Feb 2025 137 32 5 0 AA,OH
Jan 2025 154 23 12 1 AA,OH
Dec 2024 163 49 1 0 AA,OH
Nov 2024 156 22 0 0 OH,AA
Oct 2024 174 31 0 0 AA,OH
Sep 2024 180 44 4 0 OH,AA,MQ
Aug 2024 180 64 6 1 AA,MQ,OH
Jul 2024 182 85 9 0 AA,MQ,OH
Jun 2024 180 50 1 0 AA,OH
May 2024 186 84 2 1 AA,OH
Apr 2024 176 57 0 1 AA,OH
Mar 2024 182 47 0 0 AA,OH
Feb 2024 143 30 0 0 AA,MQ,OH
Jan 2024 148 43 1 0 AA,MQ,OH

CLT–SDF seasonal on-time pattern

Best: November (87.5%) · weakest: July (66.7%)

65%70%75%80%85%90% JanFebMarAprMayJunJulAugSepOctNovDec 81.2%

Strongest calendar month

November

87.5% on-time · ~147 flights/mo

Busiest calendar month

March

~176 flights/mo avg

Weakest calendar month

July

66.7% on-time · ~164 flights/mo

Cancellation Rate

1.7%

65 of 3,807 flights

Diversion Rate

0.2%

6 of 3,807 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

CLT - Charlotte

Full on-time, delay-cause, and seasonal performance for Charlotte, NC.

CLT on-time profile

SDF - Louisville

Full on-time, delay-cause, and seasonal performance for Louisville, KY.

SDF on-time profile

Compare the two airports

See CLT and SDF side by side on delays, cancellations, and reliability.

Compare CLT vs SDF

Origin-hub reliability standing

Mid-pack among CLT departures

From CLT, this corridor sits with 116 other 75–85% on-time routes out of 129 tracked departures, not the hub's reliability leaders (5 at ≥85%) and not the softest ( 8 below 75%). Destination: Louisville · fleet on-time rank #3056 of 4927.

What the Data Says About CLT to SDF

11,247 tracked flights put the CLT to SDF pairing (Charlotte to Louisville) at a 80.2% on-time rate, squarely in line with the wider network. Delays that do occur run 77.6 minutes on average. Across the 335-mile route and its 17 carriers, the trailing 24 months show 1.7% cancelled and 0.2% diverted (3,807 flights sampled).

The monthly split is wide on this route: Oct 2025 posted the strongest performance at 88% on-time, while Jul 2024 came in at just 53% - a 35-point swing worth factoring into travel timing.

On the multi-year calendar, CLT–SDF peaks in November at 87.5% on-time while March carries the heaviest traffic (~176 flights per month) ; the softest month is July at 66.7%, a 20.8-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does CLT to SDF rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, CLT to SDF ranks #1007 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from CLT to SDF? ▼
Flights from Charlotte to Louisville have a 80.2% on-time rate based on 11,247 flights. The average delay is 77.6 minutes. The best recent month was Oct 2025 with 88% on-time.
What is the cancellation rate for CLT to SDF? ▼
Over the last 24 months, 1.7% of flights on this route were cancelled (65 of 3,807 flights) and 0.2% were diverted.
How far is the flight from CLT to SDF? ▼
The flight distance from Charlotte (CLT) to Louisville (SDF) is approximately 335 miles. This route is served by 17 carriers.
When is the best time to fly from CLT to SDF? ▼
The best recent month for on-time performance was Oct 2025 (88% on-time). The worst was Jul 2024 (53% on-time). Consider booking during months with historically better performance.

Airports on this route

CLT Airport

Charlotte
SDF Airport

Louisville
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 CLT–SDF data

CLT–SDF is mid-pack at 80.2% on-time; month and carrier mix move more than the corridor headline.

  • Compare CLT and SDF airport profiles: delay causes and top routes differ even on the same corridor. CLT airport
  • If your dates flex, November (87.5% on-time) beats July (66.7%) on this corridor. Seasonal chart
  • 4 other routes post a similar 80.2% 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.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

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.