Route · SDF → ATL · 2020–2025 BTS data
Louisville to Atlanta
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), SDF to ATL (Louisville to Atlanta) ranks #513 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 89.5%
- On-time
- +10.5 pts
- vs US avg
- 81 min
- Delay when late
- 16,538
- Flights
- #513 of 4927
- Corpus placement
Cancelled
1.1%
Best Month
Sep 2025 99%
Worst Month
Jun 2025 80%
Distance
321 mi
Carriers
17
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 216 | 32 | 8 | 0 | DL |
| Nov 2025 | 213 | 30 | 4 | 0 | DL |
| Oct 2025 | 230 | 14 | 0 | 1 | DL |
| Sep 2025 | 222 | 3 | 0 | 0 | DL |
| Aug 2025 | 241 | 18 | 2 | 0 | DL |
| Jul 2025 | 230 | 32 | 1 | 1 | DL,NK |
| Jun 2025 | 241 | 49 | 8 | 0 | DL,OO,NK |
| May 2025 | 254 | 40 | 0 | 1 | DL,OO,NK |
| Apr 2025 | 221 | 25 | 3 | 1 | DL,WN |
| Mar 2025 | 239 | 24 | 0 | 0 | WN,DL |
| Feb 2025 | 204 | 37 | 1 | 1 | DL,WN |
| Jan 2025 | 210 | 42 | 12 | 0 | DL,WN |
| Dec 2024 | 239 | 33 | 0 | 1 | DL,WN |
| Nov 2024 | 225 | 22 | 0 | 0 | WN,DL |
| Oct 2024 | 249 | 10 | 0 | 0 | WN,DL |
| Sep 2024 | 233 | 20 | 1 | 0 | WN,DL |
| Aug 2024 | 237 | 19 | 1 | 0 | DL,WN |
| Jul 2024 | 252 | 50 | 19 | 1 | DL,WN |
| Jun 2024 | 241 | 18 | 1 | 0 | DL,WN |
| May 2024 | 262 | 41 | 0 | 0 | DL,WN |
| Apr 2024 | 250 | 16 | 0 | 0 | DL,WN |
| Mar 2024 | 249 | 24 | 1 | 0 | DL,WN |
| Feb 2024 | 198 | 10 | 0 | 0 | DL,WN |
| Jan 2024 | 212 | 35 | 1 | 0 | DL,WN |
SDF–ATL seasonal on-time pattern
Best: September (93.8%) · weakest: July (85.0%)
Strongest calendar month
September
93.8% on-time · ~235 flights/mo
Busiest calendar month
March
~256 flights/mo avg
Weakest calendar month
July
85.0% on-time · ~227 flights/mo
Cancellation Rate
1.1%
63 of 5,568 flights
Diversion Rate
0.1%
7 of 5,568 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
SDF - Louisville
Full on-time, delay-cause, and seasonal performance for Louisville, KY.
SDF on-time profileATL - Atlanta
Full on-time, delay-cause, and seasonal performance for Atlanta, GA.
ATL on-time profileCompare the two airports
See SDF and ATL side by side on delays, cancellations, and reliability.
Compare SDF vs ATLOrigin-hub reliability standing
Among SDF's stronger departures
SDF → ATL posts a 89.5% on-time rate, landing in the ≥85% band with 9 of 23 BTS-tracked routes leaving Louisville. The same hub also shows 13 mid-band and 1 challenged departures · fleet-wide on-time rank #191 of 4927 (highest on-time = #1).
Similar routes
Other BTS-tracked routes with comparable performance or trip length to SDF–ATL.
Routes with a similar on-time rate
What the Data Says About SDF to ATL
Louisville to Atlanta (SDF to ATL) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 89.5% on-time rate across 16,538 flights, with delays that do happen averaging 81.0 minutes. The corridor runs roughly 321 miles and is served by 17 carriers. Over the most recent 24 months, 63 of 5,568 flights were cancelled (1.1%) and 7 diverted (0.1%).
The monthly split is wide on this route: Sep 2025 posted the strongest performance at 99% on-time, while Jun 2025 came in at just 80% - a 19-point swing worth factoring into travel timing.
On the multi-year calendar, SDF–ATL peaks in September at 93.8% on-time while March carries the heaviest traffic (~256 flights per month) ; the softest month is July at 85.0%, a 8.8-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does SDF to ATL rank among US routes by traffic? ▼
How often are flights delayed from SDF to ATL? ▼
What is the cancellation rate for SDF to ATL? ▼
How far is the flight from SDF to ATL? ▼
When is the best time to fly from SDF to ATL? ▼
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 SDF–ATL data
SDF–ATL runs 10.5 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.
- Compare SDF and ATL airport profiles: delay causes and top routes differ even on the same corridor. SDF airport
- If your dates flex, September (93.8% on-time) beats July (85.0%) on this corridor. Seasonal chart
- 4 other routes post a similar 89.5% 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.