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Route on-time record

ATL to SDF: most on-time flights and the best time to fly

Atlanta (Hartsfield Jackson Atlanta International Airport) to Louisville (Louisville Muhammad Ali International Airport). 2,712 nonstop flights in Jun 2025 to May 2026, 83% arrived within 15 minutes and 1.8% were cancelled. The most reliable flight number was Delta 1507 at 9:05 AM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

ATL → SDF

Atlanta to Louisville: 2,712 nonstop flights a year

On time (12 months)

83%

Cancelled

1.8%

avg delay 12 min

Best time to leave

Before 9 AM

90% on time vs 79% 6 to 9 PM

Most reliable airline

Delta

82% chance on time

Check ATL to SDF fares

Fares open on our travel partner (Aviasales). Pick the flight number you chose here.

Most reliable nonstop flights

Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.

  1. #1 · Delta 1507

    9:05 AM → 10:26 AM1h 21m nonstop

    Local times, typical schedule. Last flown 2026-05-06.

    89%

    chance on time

    On time (history)
    100%
    Cancelled
    4.2%
    Avg arrival delay
    2 min
    • Arrived on time 100% of the time (23 flights, Jun 2025 to May 2026).
    • Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
    • Short track record (23 flights), so its score leans on the airline's record at this hour.

    Limited track record · 23 flights

    Find Delta 1507 fares Opens this date on Aviasales

  2. #2 · Delta 1523

    7:35 AM → 8:56 AM1h 21m nonstop

    Local times, typical schedule. Last flown 2026-05-29.

    88%

    chance on time

    On time (history)
    100%
    Cancelled
    10.0%
    Avg arrival delay
    1 min
    • Arrived on time 100% of the time (18 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 90% on time; 6 to 9 PM: 79%).
    • Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
    • Short track record (18 flights), so its score leans on the airline's record at this hour.

    Limited track record · 18 flights

    Find Delta 1523 fares Opens this date on Aviasales

  3. #3 · Delta 1481

    10:35 AM → 11:58 AM1h 20m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    87%

    chance on time

    On time (history)
    89%
    Cancelled
    2.2%
    Avg arrival delay
    4 min
    • Arrived on time 89% of the time (349 flights, Jun 2025 to May 2026).
    • Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).

    Strong track record · 349 flights

    Find Delta 1481 fares Opens this date on Aviasales

  4. #4 · Delta 1374

    8:05 AM → 9:28 AM1h 21m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    86%

    chance on time

    On time (history)
    89%
    Cancelled
    2.4%
    Avg arrival delay
    8 min
    • Arrived on time 89% of the time (320 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 90% on time; 6 to 9 PM: 79%).
    • Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).

    Strong track record · 320 flights

    Find Delta 1374 fares Opens this date on Aviasales

  5. #5 · Delta 2831

    5:33 PM → 6:52 PM1h 19m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    83%

    chance on time

    On time (history)
    85%
    Cancelled
    0.8%
    Avg arrival delay
    12 min
    • Arrived on time 85% of the time (127 flights, Jun 2025 to May 2026).
    • Departs inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.

    Moderate track record · 127 flights

    Find Delta 2831 fares Opens this date on Aviasales

  6. #6 · Delta 2624

    10:40 PM → 11:57 PM1h 19m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    81%

    chance on time

    On time (history)
    82%
    Cancelled
    2.7%
    Avg arrival delay
    16 min
    • Arrived on time 82% of the time (330 flights, Jun 2025 to May 2026).
    • Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).

    Strong track record · 330 flights

    Find Delta 2624 fares Opens this date on Aviasales

  7. #7 · Delta 3195

    12:45 PM → 2:00 PM1h 16m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    79%

    chance on time

    On time (history)
    80%
    Cancelled
    1.3%
    Avg arrival delay
    10 min
    • Arrived on time 80% of the time (150 flights, Jun 2025 to May 2026).
    • Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).

    Moderate track record · 150 flights

    Find Delta 3195 fares Opens this date on Aviasales

  8. #8 · Delta 2842

    9:24 PM → 10:43 PM1h 21m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    79%

    chance on time

    On time (history)
    81%
    Cancelled
    0.0%
    Avg arrival delay
    9 min
    • Arrived on time 81% of the time (59 flights, Jun 2025 to May 2026).
    • Never cancelled in 59 scheduled flights.
    • Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
    • Short track record (59 flights), so its score leans on the airline's record at this hour.

    Limited track record · 59 flights

    Find Delta 2842 fares Opens this date on Aviasales

  9. #9 · Delta 1126

    3:15 PM → 5:01 PM1h 18m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    78%

    chance on time

    On time (history)
    79%
    Cancelled
    1.2%
    Avg arrival delay
    12 min
    • Arrived on time 79% of the time (165 flights, Jun 2025 to May 2026).
    • Departs inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.

    Moderate track record · 165 flights

    Find Delta 1126 fares Opens this date on Aviasales

  10. #10 · Delta 3093

    7:59 PM → 9:16 PM1h 18m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    76%

    chance on time

    On time (history)
    77%
    Cancelled
    1.0%
    Avg arrival delay
    15 min
    • Arrived on time 77% of the time (294 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (6 to 9 PM: 79% on time; Before 9 AM: 90%).
    • Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).

    Strong track record · 294 flights

    Find Delta 3093 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Delta Air Lines82%

    2,694 flights · 83% on time as flown · 1.8% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

  • Before 9 AM90%

    367 flights · avg delay 7 min

  • 9 AM to noon89%

    412 flights · avg delay 5 min

  • Noon to 3 PM85%

    367 flights · avg delay 9 min

  • 3 to 6 PM79%

    627 flights · avg delay 14 min

  • 6 to 9 PM79%

    393 flights · avg delay 15 min

  • After 9 PM80%

    546 flights · avg delay 17 min

Best day: Tuesday (86%). Worst: Sunday (79%).

On time by month

All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.

J
85
F
87
M
83
A
87
M
78
J
79
J
72
A
82
S
90
O
91
N
89
D
84

What delays this route

  • Airline (crew, maintenance, boarding)48%
  • Late-arriving aircraft24%
  • Air traffic control and airport volume18%
  • Severe weather9%

Share of delay minutes by the cause airlines report to the US DOT.

Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure

ATL to SDF questions

What time of day is best to fly ATL to SDF?
Before 9 AM: 90% of flights arrived on time, against 79% for departures 6 to 9 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
Which airline is most on time from ATL to SDF?
Delta, with a season-adjusted 82% chance of operating and arriving on time over 2,694 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
What is the worst month for delays on ATL to SDF?
July (72% on time); the best was October (91%), averaged over Jun 2023 to May 2026.
Is this a prediction for my flight?
No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.

More routes from ATL

Live status: FAA delays and ground stops